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Olen nõus

Arvi Ravasoo

https://www.etis.ee/CV/Arvi_Ravasoo/est
22.09.1939
29.06.2014
6204163
arvi@ioc.ee

Teenistuskäik

Töökohad ja ametid
01.01.1980–31.12.1998   
Tallinna Tehnikaülikool, teoreetilise mehaanika kateeder, ehitusmehaanika kateeder ja mehaanika instituut, pedagoogiline töö kohakaasluse alusel.
1976–29.06.2014   
Tallinna Tehnikaülikool, TTÜ Küberneetika Instituut, Vanemteadur (1,00)
01.01.1974–31.12.1976   
ENSV Ehituskomitee Ehituse Teadusliku Uurimise Instituut, hoonekonstruktsioonide osakond, laboratooriumi juhataja, osakonna juhataja
01.01.1971–31.12.1974   
ENSV Ehitusministeeriumi Ehituse Organiseerimise Trust, ehitustööstuse baaside projekteerimise osakond, projekti peainsener, osakonnajuhataja.
01.01.1968–31.12.1971   
Tallinna Polütehniline Instituut, ehituskonstruktsioonide kateeder, aspirant
01.01.1966–31.12.1968   
ENSV Ehituskomitee, RPI “Eesti Maaehitusprojekt”, vaneminsener
01.01.1963–31.12.1966   
NSVL Kaitseministeeriumi Korterite Ekspluatatsiooni Osakond, Tallinn, meister, vaneminsener
 
 
Haridustee
Kõrgem
1968–1971   
Tallinna Polütehniline Instituut, aspirantuur
1958–1963   
Tallinna Polütehniline Instituut
1947–1958   
Tallinna 16. Keskkool
 
 
Teadusorganisatsiooniline ja -administratiivne tegevus
2001−...   
Eesti teaduse tippkeskus "Mittelineaarsete Protsesside Analüüsi Keskus" - töögrupi juht
1995−...   
Euroopa Mehaanikaühing EUROMECH - liige
1992−...   
Eesti TF - granditaotluste retsensent
1992−...   
TTÜ Küberneetika Instituudis, TTÜ mehaanikainstituudis ja TTÜ Ehitiste projekteerimise instituudis valminud bakalaureuse ja magistritööd - oponent
1980−...   
Rahvusvahelised ja vabariiklikud teadusajakirjad - retsensent
2002−2002   
TTÜ mehaanikainstituudi direktori valimiskomisjon - liige
2000−2005   
Euroopa Teadusfondi programm NATEMIS - juhtiva komitee liige
2000−2001   
TTÜ mehaanikainstituudi professorite valimiskomisjon - liige
1999−2002   
TTÜ mehaanikainstituudi nõukogu - liige
1999−2003   
TTÜ Küberneetika Instituudi parima publikatsioni konkursi hindamiskomisjon - liige (1999, 2000, 2003)
 
 
Loometöö
01.02-31.04.1996 - Teadustöö Uppsala Ülikoolis, koostööpartner prof. B. Lundberg
01-30.09.1997 - Teadustöö Cambridge'i Ülikoolis, koostööpartner prof. D.G. Crighton
01-28.02.1998 - Teadustöö Uppsala Ülikoolis, koostööpartner prof. B. Lundberg
01.02-30.04.2007 - Teadustöö Oslo Ülikoolis CENS-CMA koostöö raames

Kvalifikatsioon

Teaduskraadid
Arvi Ravasoo, doktorikraad, 1971, (juh) Valdek Kulbach; Heinrich Laul, Hüperpoolse paraboloidi kujuliste katuste käitumise uurimine, Tallinna Tehnikaülikool, Ehitusteaduskond, Ehitiste projekteerimise instituut.
 
 
Teaduspreemiad ja tunnustused
0, Arvi Ravasoo, 1995, 1999 - TTÜ Küberneetika Instituudi parimad publikatsioonid.
 
 
Teadustöö põhisuunad
ETIS KLASSIFIKAATOR: 4. Loodusteadused ja tehnika; 4.10. Füüsika; TÄPSUSTUS: Pideva keskkonna mehaanika, lainelevi, akustodiagnostika
 
 
Lisainfo
Tehnikakandidaat
VAK, NSVL, 1971

Juhendatud väitekirjad

Publikatsioonid

Klass
Aasta
Publikatsioon
 
1.1.
2016
Braunbrück, Andres; Ravasoo, Arvi (2016). Nonlinear wave propagation and reflection - comparing the numerics with the analytics. Wave Motion, 60, 108−120.10.1016/j.wavemoti.2015.08.006.
3.4.
2015
Braunbrück, Andres; Ravasoo, Arvi (2015). Nonlinear propagation and reflection of ultrasound - combining the numerical and analytical approach. 28th Nordic Seminar on Computational Mechanics : 22 - 23 October, Tallinn, 2015, Proceedings of the NSCM28. _EditorsAbbr Berezovski, Arkadi; Tamm, Kert; Peets, Tanel. Tallinn: CENS, Institute of Cybernetics at Tallinn University of Technology, 39−42.
1.1.
2014
Ravasoo, Arvi (2014). Interaction of bursts in exponentially graded materials characterized by parametric plots. Wave Motion, 51 (5), 758−767.10.1016/j.wavemoti.2014.01.006.
5.2.
2014
Ravasoo, Arvi (2014). Nonlinear waves for characterization of materials with smoothly changing properties. IUTAM Symposium on Complexity of Nonlinear Waves : 8-12 September, Tallinn 2014, Book of Abstracts. _EditorsAbbr Salupere, Andrus; Maugin, Gérard A. Tallinn: Institute of Cybernetics at Tallinn University of Technology, 97−98.
1.1.
2013
Ravasoo, Arvi (2013). Tone bursts in exponentially graded materials characterized by parametric plots. Proceedings of the Estonian Academy of Sciences, 62 (4), 258−266. DOI: 10.3176/proc.2013.4.06.
1.1.
2013
Ravasoo, Arvi (2013). Modified constitutive equation for quasi-linear theory of viscoelasticity. Journal of Engineering Mathematics, 78 (1), 111−118.10.1007/s10665-011-9473-5.
3.1.
2013
Ravasoo, Arvi (2013). Bursts in exponentially graded material characterized by parametric plots. 20th International Congress on Sound and Vibration 2013 (ICSV 20) : Bangkok, Thailand, 7-11 July 2013, [Proceedings]. _EditorsAbbr Crocker, M. J.; Pawelczyk, M.; Paosawatyanyong, B. Auburn, Alabama: International Institute of Acoustics and Vibration, 2664−2671.
5.2.
2013
Ravasoo, Arvi (2013). Bursts in exponentially graded material characterized by parametric plots. ICSV20 : 20th International Congress on Sound and Vibration, 7-11 July 2013 Bangkok, Thailand, Book of Abstracts. Bangkok: International Institute of Acoustics and Vibration, 153.
1.1.
2012
Ravasoo, A. (2012). Interaction of bursts as a detector of material inhomogeneity. Acta Acustica united with Acustica, 98 (6), 864−869.10.3813/AAA.918570.
5.2.
2012
Ravasoo, Arvi (2012). Interaction of bursts for acoustodiagnostics of functionally graded materials. ESMC-2012 - 8th European Solid Mechanics Conference Graz, Austria, July 9-13, 2012, Book of Abstracts. _EditorsAbbr Holzapfel, Gerhard A.; Ogden, Ray W. Graz: Verlag der Technischen Universit„t Graz, [1-2].
1.1.
2011
Ravasoo, A. (2011). Counter-propagation of harmonic waves in exponentially graded materials. Journal of Sound and Vibration, 330 (16), 3874−3882.10.1016/j.jsv.2011.03.013.
1.1.
2010
Ravasoo, Arvi (2010). On perturbative solutions for nonlinear waves in inhomogeneous materials. Proceedings of the Estonian Academy of Sciences, 59 (2), 145−149. DOI: 10.3176/proc.2010.2.13.
1.1.
2010
Engelbrecht, Jüri; Ravasoo, Arvi; Janno, Jaan (2010). Nonlinear acoustic nondestructive evaluation (NDE): qualitative and quantitative effects. Materials and Manufacturing Processes, 25 (4), 212−220.10.1080/10426910903425390.
3.1.
2010
Ravasoo, Arvi (2010). Counterpropagating ultrasonic waves for inhomogeneous materials characterization. IUTAM Symposium on Recent Advances of Acoustic Waves in Solids : Proceedings of the IUTAM Symposium on Recent Advances of Acoustic Waves in Solids, Taipei, Taiwan, May 25-28, 2009. Ed. Wu, Tsung-Tsong; Ma, Chien-Ching. Berlin: Springer, 65−76. (IUTAM Bookseries; 26).10.1007/978-90-481-9893-1_6.
3.1.
2010
Ravasoo, Arvi (2010). Nonlinear interaction of waves in exponentially graded materials. 17th International Congress on Sound and Vibration 2010 (ICSV 17) : Cairo, Egypt, 18-22 July 2010, [Proceedings]. Auburn, Alabama: International Institute of Acoustics and Vibration, 2006−2016.
5.2.
2010
Ravasoo, A. (2010). Nonlinear interaction of waves in exponentially graded materials. ICSV 17 : The 17th International Congress on Sound and Vibration, Cairo, 18-22 July, 2010 : Book of Abstracts. 3−4.
3.1.
2009
Ravasoo, Arvi (2009). The perturbation technique for wave interaction in prestressed material. In: Quak, Ewald; Soomere, Tarmo (Ed.). Applied Wave Mathematics : Selected Topics in Solids, Fluids, and Mathematical Methods (31−53). . Heidelberg: Springer. DOI: 10.1007/978-3-642-00585-5_4.
5.2.
2009
Ravasoo, Arvi (2009). Counterpropagating ultrasonic waves for inhomogeneous materials characterization. IUTAM Symposium on Recent Advances of Acoustic Waves in Solids : May 25-28, 2009, Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan. 81−82.
5.2.
2009
Ravasoo, Arvi (2009). Wave interaction for characterization of inhomogeneous materials. FUDoM 09 Programme and Abstracts.Finno-Ugric International Conference of Mechanics : 23-29 August, 2009, Savoya Palace, Ráckeve, Hungary. 24−25.
5.2.
2009
Ravasoo, Arvi (2009). Nonlinear counter-propagating waves in inhomogeneous materials. International Conference on Complexity of Nonlinear Waves : Book of Abstracts, October 5-7, 2009, Tallinn, Estonia. _EditorsAbbr Berezovski, Arkadi; Soomere, Tarmo. Tallinn: Tallinn University of Technology, 31.
5.2.
2009
Engelbrecht, Jüri; Ravasoo, Arvi (2009). Nondestructive characterization of functionally graded materials. ESMC2009 : Proceedings of the 7th EUROMECH Solid Mechanics Conference. Book of Abstracts : Mini-Symposia. _EditorsAbbr Ambrósio, Jorge A.C.; Silva, Miguel P.T. Lisbon: Portuguese Association for Theoretical, Applied and Computational Mechanics, 605−606.
1.2.
2008
Braunbrück, Andres; Ravasoo, Arvi (2008). Nonlinear interaction and resonance of counterpropagating waves. International Journal of Pure and Applied Mathematics, 42 (2), 205−215.
3.1.
2008
Engelbrecht, J.; Ravasoo, A.; Janno, J. (2008). Nonlinear acoustic NDE - qualitative and quantitative effects. Multifunctional Materials and Structures : Selected, peer reviewed papers from International Conference on Multifunctional Materials and Structures, July 28-31, 2008, Hong Kong, P.R.China. Ed. Lau, A. K.T.; Lu, J.; Varadan, V. K.; Chang, F.K.; Tu, J.P.; Lam, P.M. Stafa-Zurich: Trans Tech Publications Ltd, 17−20. (Advanced Materials Research ; 47-50). DOI: 10.4028/www.scientific.net/AMR.47-50.17.
5.2.
2008
Engelbrecht, J.; Ravasoo, A.; Janno, J. (2008). Nonlinear acoustic NDE - qualitative and quantitative effects. International Conference on Multi-functional Materials and Structures (MFMS 2008): Hong Kong SAR China, 28 July - 31 July 2008.
1.1.
2007
Braunbrück, Andres; Ravasoo, Arvi (2007). Resonance phenomenon of wave interaction in inhomogeneous solids. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 56 (2), 108−115.
1.1.
2007
Ravasoo, A. (2007). Non-linear interaction of waves in prestressed material. International Journal of Non-Linear Mechanics, 42 (10), 1162−1169. DOI: 10.1016/j.ijnonlinmec.2007.09.004.
3.1.
2007
Ravasoo, A.; Braunbrück, A. (2007). Nonlinear acoustic techniques for NDE of materials with variable properties. In: Delsanto, P. P. (Ed.). Universality of nonclassical nonlinearity : applications to non-destructive evaluations and ultrasonics (425−442). . New York: Springer. DOI: 10.1007/978-0-387-35851-2_27.
3.1.
2007
Ravasoo, Arvi (2007). Characterization of variable material properties by nonlinear acoustic techniques. Fourteenth International Congress on Sound and Vibration (ICSV14) : Cairns, Australia 9-12 July 2007. [S.l.]: International Institute of Acoustics and Vibration, 1014−1020.
5.2.
2007
Braunbrück, Andres; Ravasoo, Arvi (2007). Nonlinear interaction and resonance of counterpropagating waves. Fourth International Conference of Applied Mathematics and Computing, FICAMC : August 12-18, 2007 Plovdiv, Bulgaria, Volume 1, A-F. _EditorsAbbr Nenov, Svetoslav. 56.
5.2.
2007
Ravasoo, Arvi (2007). Characterization of variable material properties by nonlinear acoustic techniques. 14th International Congress on Sound & Vibration ICSV14 : Cairns Australia 9-12 July 2007, Program and Abstracts. [S.l.]: International Institute of Acoustics and Vibration, 34.
1.1.
2006
Braunbrück, Andres; Ravasoo, Arvi (2006). Wave interaction resonance in weakly inhomogeneous nonlinear elastic material. Wave Motion, 43 (3), 277−285.
3.1.
2006
Ravasoo, A. (2006). Application of counterpropagating nonlinear waves to inhomogeneous prestress characterization. CD-ROM Proceedings of the Thirteenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006,Vienna, Austria. _EditorsAbbr Eberhardsteiner, J.; Mang, H.A; Waubke, H. Vienna University of Technology, 8 p.
3.4.
2006
Braunbrück, A.; Ravasoo, A. (2006). Resonance of counterpropagating waves in weakly inhomogeneous material. 6th European Solid Mechanics Conference ESMC 2006 : [Proceedings], 28 August - 1 September 2006, Budapest, Hungary. Budapest, 2 p.
5.2.
2006
Ravasoo, A. (2006). Application of counterpropagating nonlinear waves to inhomogeneous prestress characterization. ICSV13 : Thirteenth International Congress on Sound and Vibration : Programme, Book of Abstracts, July 2-6, 2006, Vienna, Austria. 122.
5.2.
2006
Braunbrück, A.; Ravasoo, A. (2006). Resonance phenomenon of wave interaction in inhomogeneous solids. Book of Abstracts. EUROMECH Colloquium 478 Non-equilibrium Dynamical Phenomena in Inhomogeneous Solids, Tallinn University of Technology, June 13-16, 2006. 12.
1.1.
2005
Braunbrück, A.; Ravasoo, A. (2005). Application of counterpropagating nonlinear waves to material characterization. Acta Mechanica, 174, 51−61.
3.1.
2005
Braunbrück, Andres; Ravasoo, Arvi (2005). Influences of material inhomogeneity to longitudinal wave interaction. Twelfth International Congress on Sound and Vibration : Proceedings, 11-14 July 2005 - Lisbon - Portugal, Vol. 4. _EditorsAbbr Bento Coelho, J.L.; Alarcao, D. Lisbon: International Institute of Acoustics and Vibration, 3727−3734.
3.2.
2005
Braunbrück, Andres; Ravasoo, Arvi (2005). Nonlinear resonance of waves in inhomogeneous materials. Trends in Applications of Mathematics to Mechanics : Proceedings of the XIVth International Symposium (STAMM '2004), Seeheim, Germany, 22-28 August 2004. _EditorsAbbr Wang,Y.; Hutter,K. Aachen: Shaker, 61−66. (Berichte aus der Mathematik).
5.2.
2005
Braunbrück, A.; Ravasoo, A. (2005). Influence of material inhomogeneity on nonlinear wave interaction. Twelfth International Congress on Sound and Vibration : Programme and Book of Abstracts, 11-14 July 2005, Lisbon Portugal. _EditorsAbbr Bento Coelho,J .L.; Boubezari, M.; Neves, M. Lisbon: International Institute of Acoustics and Vibrations, 156.
5.2.
2005
Ravasoo, A. (2005). Counterpropagating waves and prestress characterization. Finno-Ugric International Conference of Mechanics, FUDoM 05 : 29 May - 4 June 2005, Savoya Palace, Ráckeve, Hungary, Programme and Abstracts. [1].
3.1.
2004
Ravasoo, Arvi (2004). Ultrasonic wave interaction for NDE of inhomogeneous prestress in materials. IMECE2004 : ASME International Mechanical Engineering Congress, November 13-20, 2004, Anaheim, California USA : proceedings, 3. New York: ASME, 1−8. DOI: 10.1115/IMECE2004-59700.
3.1.
2004
Braunbrück, Andres; Ravasoo, Arvi (2004). Wave interaction resonances in inhomogeneous elastic materials. Mechanics of the 21st Century : 21st ICTAM, 2004, Warsaw, CD-ROM Proceedings. _EditorsAbbr Gutkowski, W.; Kowalewski, T.A. Dordrecht: Springer, 2 p.
5.2.
2004
Braunbrück, A.; Ravasoo, A. (2004). Nonlinear resonance of waves in inhomogeneous materials. Symposium on Trends in Applications of Mathematics to Mechanics (STAMM’2004), Final Program, Lufthansa Bildungszentrum Seeheim, Germany, Aug. 22 – 28. 9.
5.2.
2004
Braunbrück, A.; Ravasoo, A. (2004). Wave interaction resonances in inhomogeneous elastic materials. 21st International Congress of Theoretical and Applied Mechanics : ICTAM04 Abstracts and CD-ROM Proceedings, August 15-21, 2004, Warsaw, Poland. Warsaw: IPPT PAN, 281.
1.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear interaction of waves with material inhomogeneity. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 52 (1), 157−168.
1.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear ultrasonic wave interaction in weakly inhomogeneous elastic material. Ultragarsas, 48 (3), 128−131.
3.1.
2003
Ravasoo, A. (2003). Evaluation of plane inhomogeneous stress field by ultrasonic boundary measurements. Proceedings of ATEM'03 : International Conference on Advanced Technology in Experimental Mechanics 2003, September 10-12, 2003, Nagoya, Japan. Tokyo: The Japan Society of Mechanical Engineers, Paper OS02W0110, 4 p. (JSME No. 03-207).
3.1.
2003
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (2003). Nonlinear waves in solids and the inverse problems. IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains: Proceedings of the IUTAM Symposium held in Stuttgart, Germany, 20-24 August 2001. Ed. Miehe,C. Dordrecht: Kluwer Academic Publishers, 331−339. (Solid Mechanics and its Applications; 108). DOI: 10.1007/978-94-017-0297-3_30.
3.1.
2003
Ravasoo, A. (2003). Nonlinear diagnostics of inhomogeneous prestress field by ultrasound. Proceedings of the Tenth International Congress on Sound and Vibration, Stockholm, Sweden, 7-10 July 2003. International Institute of Acoustics and Vibration, 3557−3564.
3.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Ultrasonic nonlinear resonance for characterization of material inhomogeneity. World Congress on Ultrasonics WCU 2003 : Proceedings, September 7-10, 2003, Paris, France. Paris: SFA, 503−506.
5.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Ultrasonic nonlinear resonance for characterization of material inhomogeneity. 5th World Congress on Ultrasonics WCU 2003, September 7-10, 2003 Paris, France. Paris: Institut Biomédical des Cordeliers, Université Pierre et Marie Curie, 65.
5.2.
2003
Ravasoo, A. (2003). Evaluation of plane inhomogeneous stress field by ultrasonic boundary measurements. Abstracts of ATEM'03 : International Conference on Advanced Technology in Experimental Mechanics 2003, September 10 through 12, 2003, Nagoya Congress Center, Nagoya, Japan. 158.
5.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear wave interaction in a material with physical inhomogeneities. Book of Abstracts. 5th EUROMECH Solid Mechanics Conference. AUT, Thessaloniki, Hellas, August 17-22, 2003. _EditorsAbbr Aifantis, E.C. Giapoulis Publishers, 374.
5.2.
2003
Ravasoo, A. (2003). Nonlinear diagnostics of inhomogeneous prestress field by ultrasound. Abstract Book & Congress Information : Tenth International Congress on Sound and Vibration, Stockholm, Sweden, 7-10 July 2003. IIAV, 80.
3.2.
2002
Ravasoo, A. (2002). NDE based on the analysis of ultrasonic waves nonlinear interaction in inhomogeneously predeformed material. IV International Workshop - Advances in Signal Processing for Nondestructive Evaluation of Materials. _EditorsAbbr Maldague,X.P.V. Columbus: The American Society for Nondestructive Testing, Inc, 239−244. (Topics on Nondestructive Evaluation Series; 6).
3.4.
2002
Ravasoo, A. (2002). Nonlinear interaction of ultrasonic waves in an inhomogeneously predeformed elastic material. Forum Acusticum Sevilla 2002: Official publication of the meeting: Sevilla, Spain 16-20 September 2002. _EditorsAbbr Calvo-Manzano, A.; Pérez-López, A.; Santiago, J. S. Sevilla: Sociedad Española de Acústica, NON-02-006-IP, 6 p. (Revised ed.).
5.2.
2002
Ravasoo, A. (2002). Nonlinear interaction of ultrasonic waves in an inhomogeneously predeformed elastic material. Abstracts.Forum Acusticum Sevilla 2002.16-20 September 2002, Sevilla, Spain. S 103.
5.2.
2002
Ravasoo, A. (2002). Identification of inhomogeneous predeformation in nonlinear elastic material from ultrasonic boundary measurements. Abstracts of the First International Conference "Inverse Problems: Modeling and Simulation" held on July 14-21, 2002 at Fethiye, Turkey. _EditorsAbbr Cohn, S., et al. 131−132.
5.2.
2002
Braunbrück, A.; Ravasoo, A. (2002). Nonlinear ultrasonic waves interaction in weakly inhomogeneous elastic material. Abstracts. Joint Baltic-Nordic Acoustical Meeting 2002.26-28 August 2002.TU of Denmark, Copenhagen, Denmark. 11.
5.2.
2002
Braunbrück, A.; Ravasoo, A. (2002). Nonlinear interaction of waves with material inhomogeneity. EUROMECH Colloquium 436 : Nonlinear Waves in Microstructured Solids, May 29 - June 01, 2002, Tallinn, Estonia : book of abstracts. 23.
1.1.
2001
Ravasoo, A.; Lundberg, B. (2001). Nonlinear interaction of longitudinal waves in an inhomogeneously predeformed elastic medium. Wave Motion, 34 (2), 225−237. DOI: 10.1016/S0165-2125(00)00076-7.
1.1.
2001
Ravasoo, A.; Janno, J. (2001). Nondestructive characterization of materials with variable properties. Acta Mechanica, 151, 217−233.
3.4.
2001
Braunbrück, A.; Ravasoo, A. (2001). NDE of inhomogeneous nonlinear elastic material by ultrasound nonlinear interaction data. Defektoskopie 2001: Proceedings 31st International Conference: November 20-22, 2001, Prague, Czech Republic. Prague: Czech Society for Nondestructive Testing, 77−84.
5.2.
2001
Braunbrück, A.; Ravasoo, A. (2001). NDE of inhomogeneous nonlinear elastic material by ultrasound nonlinear interaction data. Book of Abstracts. 31th International Conference Defektoskopie 2001, Prague, Czech Republic, November 20 - 22, 2001. 30.
5.2.
2001
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (2001). Nonlinear waves in solids and inverse problems. Abstract, IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains, University of Stuttgart, Germany, August 20 - 24, 2001. 34.
5.2.
2001
Ravasoo, A. (2001). NDE based on the analysis of ultrasonic waves nonlinear interaction in inhomogeneously predeformed material. IVth International Workshop Advances in Signal Processing for Non Destructive Evaluation of Materials.August 7-10, 2001, Abstracts, Universite Laval, Quebec city, Canada. 64.
5.2.
2001
Ravasoo, A. (2001). Nonlinear distortion of ultrasonic wave profile and NDT. Program and Abstracts of the 6th International Workshop on Nonlinear Elasticity in Materials. Leuven, Belgium, June 18-22, 2001. 45.
5.2.
2001
Ravasoo, A. (2001). Nonlinear waves interaction and NDT. Finno-Ugric International Conference of Mechanics with Beda Symposium. Abstract, Savoyai Palace, Rackeve, Hungary, 27 May-2 June, 2001. 52.
1.2.
2000
Ravasoo, A.; Braunbrück, A. (2000). Wave interaction for characterization of nonlinear elastic materials. Proceedings of the Estonian Academy of Sciences. Engineering, 6 (3), 171−185.
3.1.
2000
Ravasoo, A. (2000). Nonlinear longitudinal waves interaction for inhomogeneously predeformed medium characterization. Nonlinear Acoustics at the Turn of the Millennium : ISNA 15, 15th International Symposium on Nonlinear Acoustics, Göttingen, Germany 1-4 September 1999. Ed. Lauterborn, W.; Kurz, T. Melville (New York): AIP Publishing, 337−340. (AIP Conference Proceedings; 524). DOI: 10.1063/1.1309236.
3.4.
2000
Braunbrück, A.; Ravasoo, A. (2000). Simulation of nonlinear wave interaction for elastic material properties evaluation. Proceedings of the 13th Nordic Seminar on Computational Mechanics (NSCM-13): Oslo, 20-21 October, 2000. _EditorsAbbr Hellesland,J.; Osnes,H.; Skeie,G. Oslo: Mechanics Division, Department of Mathematics, University of Oslo, 66−69. (Mechanics and Applied Mathematics Series; 7).
5.2.
2000
Ravasoo, A. (2000). Wave profile distortion and NDT of inhomogeneously predeformed material. Book of Abstracts Elastic Waves in Nondestructive Testing: Euromech 419 Colloquium, Prague, Czech Republic, 3-6 October 2000. 15.
5.2.
2000
Ravasoo, A. (2000). Nonlinear wave interaction for material characterization. 4th EUROMECH Solid Mechanics Conference, Metz, France, June 26-30, 2000, Book of Abstracts II, General sessions, Universite de Metz, France. 706.
1.1.
1999
Ravasoo, A. (1999). Nonlinear longitudinal waves in inhomogeneously predeformed elastic media. Journal of the Acoustical Society of America, 106 (6), 3143−3149.
1.1.
1999
Ravasoo, A. (1999). Nonlinear waves in characterization of inhomogeneous elastic material. Mechanics of Materials, 31 (3), 205−213. DOI: 10.1016/S0167-6636(98)00061-1.
1.2.
1999
Ravasoo, A.; Braunbrück, A. (1999). Nonlinear interaction of longitudinal waves in elastic material. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 48, 252−264.
3.1.
1999
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (1999). Stress and solitary waves in solids. Structural Dynamics: Proceedings of the Fourth European Conference on Structural Dynamics EURODYN '99/Prague/Czech Republic/7-10 June 1999. Ed. Fryba,L.; Naprstek,N. Rotterdam: Balkema, 23−30.
3.4.
1999
Braunbrück, A.; Ravasoo, A. (1999). Symbolic software application for modelling of wave interaction process. Proceedings of the Twelfth Nordic Seminar on Computational Mechanics (NSCM-12). _EditorsAbbr Kouhia,R.; Mikkola,M. Espoo: Helsinki University of Technology, 89−92.
5.2.
1999
Ravasoo, A. (1999). Nonlinear longitudinal waves interaction for inhomogeneously predeformed medium characterization. _EditorsAbbr International Symposium on Nonlinear Acoustics, ISNA-15.Symposium Program and Book of Abstracts, Göt. 52.
5.2.
1998
Ravasoo, A. (1998). Nonlinear effects of wave propagation and NDT. Fenno-Ugric Days of Mechanics with Heller Symposium.7-13 June, 1998, Ráckeve, Hungary. 1p.
5.2.
1997
Ravasoo, A. (1997). Nonlinear waves in characterization of inhomogeneous elastic medium. Book of Abstracts McNU'97: The 1997 Joint ASME, ASCE, SES Summer Meeting, Norris Center, Northwestern University, Chicago, USA, June 29-July 2.. 315.
1.1.
1996
Blanc, R.H.; Ravasoo, A. (1996). On the nonlinear viscoelastic behaviour of nylon fiber. Mechanics of Materials, 22 (4), 301−310.
5.2.
1996
Ravasoo, A. (1996). Nonlinear longitudinal waves for inhomogeneous materials characterization. Euromech Colloquium 354. Stress Waves in Solids for Materials Characterization, Chania, Greece, Sep. 17-20, 1996, Abstracts. TU Crete, 37.
5.2.
1996
Ravasoo, A. (1996). Mittelineaarsest akustodiagnostikast. Ettekannete kokkuvõtted: Eesti Teadlaste Kongress, Tallinn, 11-15 august 1996. Eesti Teaduste Akadeemia, 277.
1.1.
1995
Ravasoo, A. (1995). Ultrasonic nondestructive evaluation of inhomogeneous plane strain in elastic medium. Research in Nondestructive Evaluation, 7 (1), 55−68. DOI: 10.1007/BF01606419.
1.2.
1995
Janno, J.; Ravasoo, A. (1995). The method of finite differences in solving an inverse problem for oscillation of nonlinear viscoelastic rod. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 44 (4), 420−436.
5.2.
1995
Ravasoo, A. (1995). Non-linear acoustodiagnostics of inhomogeneous media. Program : Finno-Ugric Days of Mechanics, Rackeve, Hungary, 18-24 June 1995. 34.
1.2.
1994
Engelbrecht, J.; Ravasoo, A. (1994). From continuum mechanics to applications in the nondestructive testing. Bulletin of the Technical University of Istanbul, 47, 83−103.
5.2.
1994
Ravasoo, A. (1994). Non-linear acoustodiagnostics of inhomogeneously predeformed plates. Euromech 2nd European Solid Mechanics Conference, Genoa, Sep. 12-16, 1994 : Abstract Book. 525.
1.2.
1993
Равасоо, А. А. (1993). Нестационарные продольные волны в вязкоупругой среде с неоднородной предварительной деформацией. Извеcтия Академии Наук СССР. Механика твердого тела, 6, 91−99.
1.2.
1993
Ravasoo, A. (1993). Nonstationary longitudinal waves in viscoelastic medium with nonuniform predeformation. Mechanics of Solids, 28 (6), 89−97.
3.1.
1993
Ravasoo, A. (1993). Information extraction from ultrasound signals in inhomogeneously predeformed viscoelastic media. International Conference on Acoustic Sensing and Imaging, 29-30 March 1993, 369. London: IEE, 153−158. (IEE Conference Publications; 369).
5.2.
1993
Ravasoo, A. (1993). On some problems of acoustic diagnostics of inhomogeneous and viscoelastic media. Int. Conf. On Vibrations and Waves in Ecology, Technological Processes and Diagnostics, Abstracts.: Int. Conf. On Vibrations and Waves in Ecology, Technological Processes and Diagnostics, Minsk, 15-20 Sep. 1993 Minsk. 110.
5.2.
1993
Ravasoo, A. (1993). Some remarks on the nondestructive evaluation of an inhomogeneous predeformed state of rheological materials. Eight Int. Conf. on Mechanics of Composite Materials, Abstracts, Riga, 20-22.04.1993. 153.
1.2.
1991
Нигул, У.К., Равасоо, А. А. (1991). Нестационарные продольные волны в линейных неоднородных средах с Ei-памятью. Извеcтия Академии Наук СССР. Механика твердого тела, 2, 66−74.
1.2.
1991
Nigul, U.K.; Ravasoo, A.A. (1991). Nonstationary longitudinal waves in linear inhomogeneous media with Ei-memory. Mechanics of Solids, 26 (2), 62−71.
1.2.
1991
Ravasoo, A. (1991). Some remarks on the quasi-linear theory of viscoelasticity. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 40 (2), 122−129.
3.4.
1991
Ravasoo, A.; Engelbrecht, J. (1991). Deformation waves in hereditary inhomogeneous media. Mécanique, modelisation numerique et dynamique des materiaux : Rencontres Scientifiques du cinquantenaire 8-9-10 avril 1991. Marseille: Centre National de la Resherchere Scientifique, 291−304. (Publication du L.M.A.; 124).
5.2.
1991
Ravasoo, A. (1991). Effect of inhomogeneous predeformation on longitudinal wave in viscoelastic medium. Mechanics of Inhomogeneous Structures : Abstracts of the III All-Union Conference, Lvov, 17-19 Sept., 2. 275.
5.2.
1991
Ravasoo, A. (1991). Non-linear deformation waves in predeformed solids. Euromech Solid Mechanics Conference. München, Sept. 9-13, 1991. Abstracts.. 165.
5.2.
1991
Ravasoo, A. (1991). Transient one-dimensional wave in inhomogeneously predeformed viscoelastic medium. IX All-Union Acoustical Conference. Abstracts.: IX All-Union Acoustical Conference.. 24.
3.4.
1990
Ravasoo, A.A. (1990). On improving the efficiency of NDT. First Baltic-Scandinavian Symposium on Mechanics : Abstracts, Riga, 17 - 21 September 1990. 47−48.
1.1.
1989
Ravasoo, A. (1989). Propagation of non-linear waves in inhomogeneous hereditary media. International Journal of Non-Linear Mechanics, 24 (1), 57−64.
3.1.
1989
Ravasoo, A.A. (1989). Transient longitudinal waves in inhomogeneous media. Applied Mechanics : Proceedings of the International Conference on Applied Mechanics : August 21-25 1989, Beijing, China, 2. _EditorsAbbr Zhemin, Z. Oxford: Pergamon Press, 994−998.
1.1.
1988
Ravasoo, A.A. (1988). Propagation of a one-dimensional longitudinal-wave in an elastic medium with a nonuniform plane initial deformation. Soviet Applied Mechanics, 24 (9), 925−930.
1.2.
1988
Равасоо, А. А. (1988). Распространение одномерной продольной волны в упругой среде с плоской неоднородной предварительной деформацией. Прикладная механика, 24 (9), 103−109.
3.2.
1988
Равасоо, А. А. (1988). Нелинейное распространение одномерной продольной волны в неоднородной среде. Акустика и ультразвуковая техника : науч.-техн. сб. (56−60).. Киев: Тэхника.
5.2.
1988
Ravasoo, A. (1988). One-dimensional deformation waves in media with inhomogeneous properties. 27th Polish Solid Mechanics Conference Dedicated to the Memory of Witold Nowacki and Symposium on Inelastic Solids and structures Dedicated to the Memory of Antoni Sawczuk, Rytro, 29th Aug.- 3rd Sept. 1988. Warszaw: Polish Academy of Sciences, 140−141.
3.4.
1987
Ravasoo, A. (1987). One-dimensional ultrasonic waves in a predeformed hereditary medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 640 (83−89).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1987
Ravasoo, A.A. (1987). Propagation of the transient longitudinal wave with finite amplitude in inhomogeneous viscoelastic medium with faded memory. Abstracts of the II All-Union Conference on Mechanics of Inhomogeneous Structures. Lvov.. 232.
5.2.
1987
Ravasoo, A.A. (1987). Ultrasonic diagnostics of parameters of plane inhomogeneous deformed state of elastic medium. Abstracts of the All-Union Symposium on Application of Ultrasound in Industry and Medicine, Vilnius, 8-10 April 1987. Kaunas, KPI , 52−53.
1.2.
1986
Ravasoo, A.A. (1986). One-dimensional wave propagation in an inhomogeneous hereditarily elastic medium with E-memory. Mechanics of Solids, 21 (4), 154−159.
1.2.
1986
Равасоо, А. А. (1986). Распространение одномерных волн в неоднородной наследственно упругой среде с E-памятью. Извеcтия Академии Наук СССР. Механика твердого тела, 4, 147−152.
3.2.
1986
Ravasoo, A.A. (1986). Нелинейная акустодиагностика плоского неоднородно деформированного состояния среды. Векслер, Н. Д.. Проблемы нелинейной акустодиагностики : [сборник статей] (103−110).. Таллинн: Валгус.
3.4.
1986
Ravasoo, A (1986). On the ultrasonic stress determination in structural elements undergoing inhomogeneous two-parametric plane deformation (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 624 (115−124).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1986
Ravasoo, A.A. (1986). On determination of the strain-stress state of plates by ultrasonic method. VI All-Union Conference Shells and Spatial Structures for Roofs of Buildings, Abstracts. Tallinn, II. 13−14.
5.2.
1986
Ravasoo, A.A. (1986). On determination of the state of inhomogeneous plane strain of structures on the basis of wave effects of impact loading. VI All-Union Congress on Theoretical and Applied Mechanics, Abstracts.. 529−530.
1.2.
1985
Равасоо, А. (1985). Асимптотическое описание процесса распостранения одномерного импульса в неоднородной среде. Eesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika, 34 (2), 170−177.
3.2.
1985
Равасоо, А. А. (1985). The one-dimensional wave propagation in the inhomogenously prestressed media (in Russian). Zvolinski, N.V.; Grinfeld, M.A.; Engelbrecht, J.K.. Contributions to nonlinear mechanics of continuous media (161−171).. Tallinn: Valgus.
3.4.
1985
Ravasoo, A. (1985). Acousto-diagnostics of physical properties of the inhomogeneous standard viscoelastic medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 596 (143−151).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1984
Ravasoo, A. (1984). On the applicability of the first asymptotic approximation of the waveform distortion in acousto-diagnostics of an inhomogenous medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 575 (73−80).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1984
Ravasoo, A.A. (1984). Ultrasonic diagnostics of inhomogeneous viscoelastic medium. Abstracts of the All-Union Conference Methodics and Technics of the Ultrasound Spectroscopy.: All-Union Conference Methodics and Technics of the Ultrasound Spectroscopy, Vilnius. 79.
3.4.
1983
Ravasoo, A. (1983). On the determination of physical parameters of the inhomogenous medium by measuring the velocity and the intensity of the wave (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 551 (11−16).. Tallinn: Tallinna Polütehniline Instituut.
1.2.
1982
Равасоо, А. (1982). Распространение волн в среде с неоднородной начальной статической деформацией. Eesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika, 31 (3), 277−283.
5.2.
1982
Ravasoo, A.A. (1982). On determination of the inhomogeneous predeformed state of the medium by means of acouctic method (in Russian). Theses of Reports of the III All-Union Symposium on Physics of Acousto-Hydrodynamical Phenomena and Optoacoustics.: III All-Union Symposium on Physics of Acousto-Hydrodynamical Phenomena and Optoacoustics.. Tashkent, 15.
5.2.
1982
Ravasoo, A.A. (1982). Deformation waves in the medium with an inhomogeneous initial deformation. Abstracts. UTAM Symposium Nonlinear Deformation Waves, Tallinn: UTAM Symposium Nonlinear Deformation Waves, Tallinn. 40.
1.1.
1981
Ravasoo, A.A.; Engel'brekht, Yu.K. (1981). Transient wave processes in a viscoelastic medium. Soviet Physics: Acoustics, 27 (3), 262−263.
1.2.
1981
Равасоо, А. А., Энгельбрехт, Ю. К. (1981). Нестационарные волновые процессы в вязкоупругой среде. Акустический журнал, 27 (3), 469−471.
3.4.
1981
Равасоо, А. А., Энгельбрехт, Ю. К. (1981). Переходные волновые процессы деформации в вязкоупругой среде при импульсных воздействиях. Прикладные проблемы прочности и пластичности : методы решения задач упругости и пластичности : всесоюз. межвуз. сб. (3−10).. Горький: ГГУ.
1.1.
1979
Nigul, U.K; Ravasoo, A.A. (1979). Application of the second asymptotic approximation of pulse distortion in acoustic diagnostics of a layer on a half-space. Journal of Applied Mathematics and Mechanics, 43 (5), 1006−1013.
1.2.
1979
Нигул, У.К., Равасоо, А.А. (1979). Применение второго асимптотического приближения искажения импульса в акустодиагностике слоя на полупространстве. Прикладная математика и механика, 43 (5), 933−939.
5.2.
1972
Равасоо, А.А. (1972). Расчет гиперболо-параболоидальных покрытий по континуальной схеме. Проектирование и расчет седловидных висячих покрытий : тезисы докладов республиканской конференции. Таллинн: Таллинский политехнический институт, 17−18.
2.3.
1971
Равасоо, А. А. (1971). Исследование работы висячих покрытий гиперболо-параболической формы : автореферат ... кандидата технических наук (05.480). (Doktoritöö, Таллинский политехнический институт). Таллин: Таллинский политехнический институт.
3.4.
1971
Ravasoo, A.; Kulbach, V. (1971). An experimental investigation of saddle-shaped hanging roofs subjected to statical loading (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A ; 307 (25−33).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1971
Ravasoo, A.; Kulbach, V. (1971). Some results of calculation of saddle-shaped hanging roofs with elliptical boundaries (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A ; 307 (35−44).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1971
Равасоо, А.А. (1971). Седловидные висячие покрытия под статической нагрузкой. Сборник докладов по строительству: [доклады конференции молодых ученых и специалистов Прибалтики и Белорусской ССР по проблемам строительства в Риге 1971 г. ]. Таллин: НИПИсиликатобетон, 143−145.
5.2.
1971
Ravasoo, A.A. (1971). Behaviour of saddle shaped suspended roofs under statical load. Contributions and Theses of the IV Conference of Young Scientists and Experts from Balticum and Byelorussian SSR on the Problems of Civil Engineering. (67).IV Conference of Young Scientists and Experts from Balticum and Byelorussian SSR on the Problems of Civil Engineering.. Riga: Latvia.
3.4.
1970
Kulbach, V.; Ravasoo, A. (1970). Calculation of saddle-shaped hanging roofs with the method of collocation (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A 295 (15−28).. Tallinn: Tallinna Polütehniline Instituut.
25.11.2020

Arvi Ravasoo

https://www.etis.ee/CV/Arvi_Ravasoo/eng
22.09.1939
29.06.2014
6204163
arvi@ioc.ee

Career

Institutions and positions
01.01.1980–31.12.1998   
Tallinn University of Technology, Chair of Theoretical Mech., Chair of Structural Mech., Institute of Mech., Part time lecturer
1976–29.06.2014   
Tallinn University of Technology , Institute of Cybernetics at TUT, Senior Researcher (1,00)
01.01.1974–31.12.1976   
Scientific Research Institute of Civil Engineering, Tallinn, Head of Laboratory, Head of Dept.
01.01.1971–31.12.1974   
Trust of Construction Management, Construction Industry Bases Design Dept., Tallinn, Project Chief Engineer, Head of Dept.
01.01.1968–31.12.1971   
Tallinn Polytechnical Institute, Chair of Civil Engineering, PhD Stud
01.01.1966–31.12.1968   
Estonian Countryside Design Institute, Tallinn, Sr. engineer
01.01.1963–31.12.1966   
Tallinn Housing Dept., USSR Def. Dept., Master, Sr. engineer
 
 
Education
Higher
1968–1971   
Tallinn Polytechnical Institute, PhD Stud.
1958–1963   
Tallinn Polytechnical Institute
1947–1958   
Secondary School No. 16, Tallinn
 
 
R&D related managerial and administrative work
2001−...   
Centre of Excellence of Estonian Science CENS - supervisor of research team
1995−...   
European Mechanics Society EUROMECH - member
1992−...   
- Estonian SF - reviewer of grant applications.
1992−...   
Institute of cybernetics at TUT, Institute of Mechanics at TUT, Institute of Structural Design at TUT, BSc and MSc theses - opponent
1980−...   
International and national research journals - reviewer.
2002−2002   
TUT, Institute of mechanics, commission to elect the director - member
2000−2005   
European Science Foundation Programme NATEMIS, Steering Committee - member
2000−2001   
TUT, Institute of mechanics, commission to elect the professors - member
1999−2002   
TUT, Institute of mechanics, councel - member
1999−2003   
- Institute of cybernetics at TUT, commission to elect best publications - member (1999, 2000, 2003)
 
 
Creative work
01.02-31.04.1996 - Research work in Uppsala Univercity, in cooperation with Prof. B. Lundberg
01-30.09.1997 - Research work in Cambridge Univercity, in cooperation with Prof. D.G. Crighton
01.28.02.1998 - Research work in Uppsala Univercity, in cooperation with Prof. B. Lundberg
01.02-30.04.2007 - Research work in Oslo University, cooperation of CENS-CMA

Qualifications

Academic degrees
Arvi Ravasoo, Doctor's Degree, 1971, (sup) Valdek Kulbach; Heinrich Laul, Hüperpoolse paraboloidi kujuliste katuste käitumise uurimine (Investigation of the behaviour of hyperbolic paraboloidal roofs), Tallinn University of Technology Faculty of Civil Engineering, Department of Structural Design.
 
 
Honours & awards
0, Arvi Ravasoo, 1995, 1999 - Best publications of the Institute of Cybernetics at TUT.
 
 
Fields of research
ETIS CLASSIFICATION: 4. Natural Sciences and Engineering; 4.10. Physics and Technical Physics; SPECIFICATION: Continuum mechanics, nonlinear wave dynamics, acoustodiagnostics
 
 
Additional information
Cand. Sci. (Ph. D)
Higher Certifying Commn., USSR, 1971

Completed projects

Supervised dissertations

Publications

Category
Year
Publication
 
1.1.
2016
Braunbrück, Andres; Ravasoo, Arvi (2016). Nonlinear wave propagation and reflection - comparing the numerics with the analytics. Wave Motion, 60, 108−120.10.1016/j.wavemoti.2015.08.006.
3.4.
2015
Braunbrück, Andres; Ravasoo, Arvi (2015). Nonlinear propagation and reflection of ultrasound - combining the numerical and analytical approach. 28th Nordic Seminar on Computational Mechanics : 22 - 23 October, Tallinn, 2015, Proceedings of the NSCM28. _EditorsAbbr Berezovski, Arkadi; Tamm, Kert; Peets, Tanel. Tallinn: CENS, Institute of Cybernetics at Tallinn University of Technology, 39−42.
1.1.
2014
Ravasoo, Arvi (2014). Interaction of bursts in exponentially graded materials characterized by parametric plots. Wave Motion, 51 (5), 758−767.10.1016/j.wavemoti.2014.01.006.
5.2.
2014
Ravasoo, Arvi (2014). Nonlinear waves for characterization of materials with smoothly changing properties. IUTAM Symposium on Complexity of Nonlinear Waves : 8-12 September, Tallinn 2014, Book of Abstracts. _EditorsAbbr Salupere, Andrus; Maugin, Gérard A. Tallinn: Institute of Cybernetics at Tallinn University of Technology, 97−98.
1.1.
2013
Ravasoo, Arvi (2013). Tone bursts in exponentially graded materials characterized by parametric plots. Proceedings of the Estonian Academy of Sciences, 62 (4), 258−266. DOI: 10.3176/proc.2013.4.06.
1.1.
2013
Ravasoo, Arvi (2013). Modified constitutive equation for quasi-linear theory of viscoelasticity. Journal of Engineering Mathematics, 78 (1), 111−118.10.1007/s10665-011-9473-5.
3.1.
2013
Ravasoo, Arvi (2013). Bursts in exponentially graded material characterized by parametric plots. 20th International Congress on Sound and Vibration 2013 (ICSV 20) : Bangkok, Thailand, 7-11 July 2013, [Proceedings]. _EditorsAbbr Crocker, M. J.; Pawelczyk, M.; Paosawatyanyong, B. Auburn, Alabama: International Institute of Acoustics and Vibration, 2664−2671.
5.2.
2013
Ravasoo, Arvi (2013). Bursts in exponentially graded material characterized by parametric plots. ICSV20 : 20th International Congress on Sound and Vibration, 7-11 July 2013 Bangkok, Thailand, Book of Abstracts. Bangkok: International Institute of Acoustics and Vibration, 153.
1.1.
2012
Ravasoo, A. (2012). Interaction of bursts as a detector of material inhomogeneity. Acta Acustica united with Acustica, 98 (6), 864−869.10.3813/AAA.918570.
5.2.
2012
Ravasoo, Arvi (2012). Interaction of bursts for acoustodiagnostics of functionally graded materials. ESMC-2012 - 8th European Solid Mechanics Conference Graz, Austria, July 9-13, 2012, Book of Abstracts. _EditorsAbbr Holzapfel, Gerhard A.; Ogden, Ray W. Graz: Verlag der Technischen Universit„t Graz, [1-2].
1.1.
2011
Ravasoo, A. (2011). Counter-propagation of harmonic waves in exponentially graded materials. Journal of Sound and Vibration, 330 (16), 3874−3882.10.1016/j.jsv.2011.03.013.
1.1.
2010
Ravasoo, Arvi (2010). On perturbative solutions for nonlinear waves in inhomogeneous materials. Proceedings of the Estonian Academy of Sciences, 59 (2), 145−149. DOI: 10.3176/proc.2010.2.13.
1.1.
2010
Engelbrecht, Jüri; Ravasoo, Arvi; Janno, Jaan (2010). Nonlinear acoustic nondestructive evaluation (NDE): qualitative and quantitative effects. Materials and Manufacturing Processes, 25 (4), 212−220.10.1080/10426910903425390.
3.1.
2010
Ravasoo, Arvi (2010). Counterpropagating ultrasonic waves for inhomogeneous materials characterization. IUTAM Symposium on Recent Advances of Acoustic Waves in Solids : Proceedings of the IUTAM Symposium on Recent Advances of Acoustic Waves in Solids, Taipei, Taiwan, May 25-28, 2009. Ed. Wu, Tsung-Tsong; Ma, Chien-Ching. Berlin: Springer, 65−76. (IUTAM Bookseries; 26).10.1007/978-90-481-9893-1_6.
3.1.
2010
Ravasoo, Arvi (2010). Nonlinear interaction of waves in exponentially graded materials. 17th International Congress on Sound and Vibration 2010 (ICSV 17) : Cairo, Egypt, 18-22 July 2010, [Proceedings]. Auburn, Alabama: International Institute of Acoustics and Vibration, 2006−2016.
5.2.
2010
Ravasoo, A. (2010). Nonlinear interaction of waves in exponentially graded materials. ICSV 17 : The 17th International Congress on Sound and Vibration, Cairo, 18-22 July, 2010 : Book of Abstracts. 3−4.
3.1.
2009
Ravasoo, Arvi (2009). The perturbation technique for wave interaction in prestressed material. In: Quak, Ewald; Soomere, Tarmo (Ed.). Applied Wave Mathematics : Selected Topics in Solids, Fluids, and Mathematical Methods (31−53). . Heidelberg: Springer. DOI: 10.1007/978-3-642-00585-5_4.
5.2.
2009
Ravasoo, Arvi (2009). Counterpropagating ultrasonic waves for inhomogeneous materials characterization. IUTAM Symposium on Recent Advances of Acoustic Waves in Solids : May 25-28, 2009, Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan. 81−82.
5.2.
2009
Ravasoo, Arvi (2009). Wave interaction for characterization of inhomogeneous materials. FUDoM 09 Programme and Abstracts.Finno-Ugric International Conference of Mechanics : 23-29 August, 2009, Savoya Palace, Ráckeve, Hungary. 24−25.
5.2.
2009
Ravasoo, Arvi (2009). Nonlinear counter-propagating waves in inhomogeneous materials. International Conference on Complexity of Nonlinear Waves : Book of Abstracts, October 5-7, 2009, Tallinn, Estonia. _EditorsAbbr Berezovski, Arkadi; Soomere, Tarmo. Tallinn: Tallinn University of Technology, 31.
5.2.
2009
Engelbrecht, Jüri; Ravasoo, Arvi (2009). Nondestructive characterization of functionally graded materials. ESMC2009 : Proceedings of the 7th EUROMECH Solid Mechanics Conference. Book of Abstracts : Mini-Symposia. _EditorsAbbr Ambrósio, Jorge A.C.; Silva, Miguel P.T. Lisbon: Portuguese Association for Theoretical, Applied and Computational Mechanics, 605−606.
1.2.
2008
Braunbrück, Andres; Ravasoo, Arvi (2008). Nonlinear interaction and resonance of counterpropagating waves. International Journal of Pure and Applied Mathematics, 42 (2), 205−215.
3.1.
2008
Engelbrecht, J.; Ravasoo, A.; Janno, J. (2008). Nonlinear acoustic NDE - qualitative and quantitative effects. Multifunctional Materials and Structures : Selected, peer reviewed papers from International Conference on Multifunctional Materials and Structures, July 28-31, 2008, Hong Kong, P.R.China. Ed. Lau, A. K.T.; Lu, J.; Varadan, V. K.; Chang, F.K.; Tu, J.P.; Lam, P.M. Stafa-Zurich: Trans Tech Publications Ltd, 17−20. (Advanced Materials Research ; 47-50). DOI: 10.4028/www.scientific.net/AMR.47-50.17.
5.2.
2008
Engelbrecht, J.; Ravasoo, A.; Janno, J. (2008). Nonlinear acoustic NDE - qualitative and quantitative effects. International Conference on Multi-functional Materials and Structures (MFMS 2008): Hong Kong SAR China, 28 July - 31 July 2008.
1.1.
2007
Braunbrück, Andres; Ravasoo, Arvi (2007). Resonance phenomenon of wave interaction in inhomogeneous solids. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 56 (2), 108−115.
1.1.
2007
Ravasoo, A. (2007). Non-linear interaction of waves in prestressed material. International Journal of Non-Linear Mechanics, 42 (10), 1162−1169. DOI: 10.1016/j.ijnonlinmec.2007.09.004.
3.1.
2007
Ravasoo, A.; Braunbrück, A. (2007). Nonlinear acoustic techniques for NDE of materials with variable properties. In: Delsanto, P. P. (Ed.). Universality of nonclassical nonlinearity : applications to non-destructive evaluations and ultrasonics (425−442). . New York: Springer. DOI: 10.1007/978-0-387-35851-2_27.
3.1.
2007
Ravasoo, Arvi (2007). Characterization of variable material properties by nonlinear acoustic techniques. Fourteenth International Congress on Sound and Vibration (ICSV14) : Cairns, Australia 9-12 July 2007. [S.l.]: International Institute of Acoustics and Vibration, 1014−1020.
5.2.
2007
Braunbrück, Andres; Ravasoo, Arvi (2007). Nonlinear interaction and resonance of counterpropagating waves. Fourth International Conference of Applied Mathematics and Computing, FICAMC : August 12-18, 2007 Plovdiv, Bulgaria, Volume 1, A-F. _EditorsAbbr Nenov, Svetoslav. 56.
5.2.
2007
Ravasoo, Arvi (2007). Characterization of variable material properties by nonlinear acoustic techniques. 14th International Congress on Sound & Vibration ICSV14 : Cairns Australia 9-12 July 2007, Program and Abstracts. [S.l.]: International Institute of Acoustics and Vibration, 34.
1.1.
2006
Braunbrück, Andres; Ravasoo, Arvi (2006). Wave interaction resonance in weakly inhomogeneous nonlinear elastic material. Wave Motion, 43 (3), 277−285.
3.1.
2006
Ravasoo, A. (2006). Application of counterpropagating nonlinear waves to inhomogeneous prestress characterization. CD-ROM Proceedings of the Thirteenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006,Vienna, Austria. _EditorsAbbr Eberhardsteiner, J.; Mang, H.A; Waubke, H. Vienna University of Technology, 8 p.
3.4.
2006
Braunbrück, A.; Ravasoo, A. (2006). Resonance of counterpropagating waves in weakly inhomogeneous material. 6th European Solid Mechanics Conference ESMC 2006 : [Proceedings], 28 August - 1 September 2006, Budapest, Hungary. Budapest, 2 p.
5.2.
2006
Ravasoo, A. (2006). Application of counterpropagating nonlinear waves to inhomogeneous prestress characterization. ICSV13 : Thirteenth International Congress on Sound and Vibration : Programme, Book of Abstracts, July 2-6, 2006, Vienna, Austria. 122.
5.2.
2006
Braunbrück, A.; Ravasoo, A. (2006). Resonance phenomenon of wave interaction in inhomogeneous solids. Book of Abstracts. EUROMECH Colloquium 478 Non-equilibrium Dynamical Phenomena in Inhomogeneous Solids, Tallinn University of Technology, June 13-16, 2006. 12.
1.1.
2005
Braunbrück, A.; Ravasoo, A. (2005). Application of counterpropagating nonlinear waves to material characterization. Acta Mechanica, 174, 51−61.
3.1.
2005
Braunbrück, Andres; Ravasoo, Arvi (2005). Influences of material inhomogeneity to longitudinal wave interaction. Twelfth International Congress on Sound and Vibration : Proceedings, 11-14 July 2005 - Lisbon - Portugal, Vol. 4. _EditorsAbbr Bento Coelho, J.L.; Alarcao, D. Lisbon: International Institute of Acoustics and Vibration, 3727−3734.
3.2.
2005
Braunbrück, Andres; Ravasoo, Arvi (2005). Nonlinear resonance of waves in inhomogeneous materials. Trends in Applications of Mathematics to Mechanics : Proceedings of the XIVth International Symposium (STAMM '2004), Seeheim, Germany, 22-28 August 2004. _EditorsAbbr Wang,Y.; Hutter,K. Aachen: Shaker, 61−66. (Berichte aus der Mathematik).
5.2.
2005
Braunbrück, A.; Ravasoo, A. (2005). Influence of material inhomogeneity on nonlinear wave interaction. Twelfth International Congress on Sound and Vibration : Programme and Book of Abstracts, 11-14 July 2005, Lisbon Portugal. _EditorsAbbr Bento Coelho,J .L.; Boubezari, M.; Neves, M. Lisbon: International Institute of Acoustics and Vibrations, 156.
5.2.
2005
Ravasoo, A. (2005). Counterpropagating waves and prestress characterization. Finno-Ugric International Conference of Mechanics, FUDoM 05 : 29 May - 4 June 2005, Savoya Palace, Ráckeve, Hungary, Programme and Abstracts. [1].
3.1.
2004
Ravasoo, Arvi (2004). Ultrasonic wave interaction for NDE of inhomogeneous prestress in materials. IMECE2004 : ASME International Mechanical Engineering Congress, November 13-20, 2004, Anaheim, California USA : proceedings, 3. New York: ASME, 1−8. DOI: 10.1115/IMECE2004-59700.
3.1.
2004
Braunbrück, Andres; Ravasoo, Arvi (2004). Wave interaction resonances in inhomogeneous elastic materials. Mechanics of the 21st Century : 21st ICTAM, 2004, Warsaw, CD-ROM Proceedings. _EditorsAbbr Gutkowski, W.; Kowalewski, T.A. Dordrecht: Springer, 2 p.
5.2.
2004
Braunbrück, A.; Ravasoo, A. (2004). Nonlinear resonance of waves in inhomogeneous materials. Symposium on Trends in Applications of Mathematics to Mechanics (STAMM’2004), Final Program, Lufthansa Bildungszentrum Seeheim, Germany, Aug. 22 – 28. 9.
5.2.
2004
Braunbrück, A.; Ravasoo, A. (2004). Wave interaction resonances in inhomogeneous elastic materials. 21st International Congress of Theoretical and Applied Mechanics : ICTAM04 Abstracts and CD-ROM Proceedings, August 15-21, 2004, Warsaw, Poland. Warsaw: IPPT PAN, 281.
1.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear interaction of waves with material inhomogeneity. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 52 (1), 157−168.
1.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear ultrasonic wave interaction in weakly inhomogeneous elastic material. Ultragarsas, 48 (3), 128−131.
3.1.
2003
Ravasoo, A. (2003). Evaluation of plane inhomogeneous stress field by ultrasonic boundary measurements. Proceedings of ATEM'03 : International Conference on Advanced Technology in Experimental Mechanics 2003, September 10-12, 2003, Nagoya, Japan. Tokyo: The Japan Society of Mechanical Engineers, Paper OS02W0110, 4 p. (JSME No. 03-207).
3.1.
2003
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (2003). Nonlinear waves in solids and the inverse problems. IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains: Proceedings of the IUTAM Symposium held in Stuttgart, Germany, 20-24 August 2001. Ed. Miehe,C. Dordrecht: Kluwer Academic Publishers, 331−339. (Solid Mechanics and its Applications; 108). DOI: 10.1007/978-94-017-0297-3_30.
3.1.
2003
Ravasoo, A. (2003). Nonlinear diagnostics of inhomogeneous prestress field by ultrasound. Proceedings of the Tenth International Congress on Sound and Vibration, Stockholm, Sweden, 7-10 July 2003. International Institute of Acoustics and Vibration, 3557−3564.
3.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Ultrasonic nonlinear resonance for characterization of material inhomogeneity. World Congress on Ultrasonics WCU 2003 : Proceedings, September 7-10, 2003, Paris, France. Paris: SFA, 503−506.
5.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Ultrasonic nonlinear resonance for characterization of material inhomogeneity. 5th World Congress on Ultrasonics WCU 2003, September 7-10, 2003 Paris, France. Paris: Institut Biomédical des Cordeliers, Université Pierre et Marie Curie, 65.
5.2.
2003
Ravasoo, A. (2003). Evaluation of plane inhomogeneous stress field by ultrasonic boundary measurements. Abstracts of ATEM'03 : International Conference on Advanced Technology in Experimental Mechanics 2003, September 10 through 12, 2003, Nagoya Congress Center, Nagoya, Japan. 158.
5.2.
2003
Braunbrück, A.; Ravasoo, A. (2003). Nonlinear wave interaction in a material with physical inhomogeneities. Book of Abstracts. 5th EUROMECH Solid Mechanics Conference. AUT, Thessaloniki, Hellas, August 17-22, 2003. _EditorsAbbr Aifantis, E.C. Giapoulis Publishers, 374.
5.2.
2003
Ravasoo, A. (2003). Nonlinear diagnostics of inhomogeneous prestress field by ultrasound. Abstract Book & Congress Information : Tenth International Congress on Sound and Vibration, Stockholm, Sweden, 7-10 July 2003. IIAV, 80.
3.2.
2002
Ravasoo, A. (2002). NDE based on the analysis of ultrasonic waves nonlinear interaction in inhomogeneously predeformed material. IV International Workshop - Advances in Signal Processing for Nondestructive Evaluation of Materials. _EditorsAbbr Maldague,X.P.V. Columbus: The American Society for Nondestructive Testing, Inc, 239−244. (Topics on Nondestructive Evaluation Series; 6).
3.4.
2002
Ravasoo, A. (2002). Nonlinear interaction of ultrasonic waves in an inhomogeneously predeformed elastic material. Forum Acusticum Sevilla 2002: Official publication of the meeting: Sevilla, Spain 16-20 September 2002. _EditorsAbbr Calvo-Manzano, A.; Pérez-López, A.; Santiago, J. S. Sevilla: Sociedad Española de Acústica, NON-02-006-IP, 6 p. (Revised ed.).
5.2.
2002
Ravasoo, A. (2002). Nonlinear interaction of ultrasonic waves in an inhomogeneously predeformed elastic material. Abstracts.Forum Acusticum Sevilla 2002.16-20 September 2002, Sevilla, Spain. S 103.
5.2.
2002
Ravasoo, A. (2002). Identification of inhomogeneous predeformation in nonlinear elastic material from ultrasonic boundary measurements. Abstracts of the First International Conference "Inverse Problems: Modeling and Simulation" held on July 14-21, 2002 at Fethiye, Turkey. _EditorsAbbr Cohn, S., et al. 131−132.
5.2.
2002
Braunbrück, A.; Ravasoo, A. (2002). Nonlinear ultrasonic waves interaction in weakly inhomogeneous elastic material. Abstracts. Joint Baltic-Nordic Acoustical Meeting 2002.26-28 August 2002.TU of Denmark, Copenhagen, Denmark. 11.
5.2.
2002
Braunbrück, A.; Ravasoo, A. (2002). Nonlinear interaction of waves with material inhomogeneity. EUROMECH Colloquium 436 : Nonlinear Waves in Microstructured Solids, May 29 - June 01, 2002, Tallinn, Estonia : book of abstracts. 23.
1.1.
2001
Ravasoo, A.; Lundberg, B. (2001). Nonlinear interaction of longitudinal waves in an inhomogeneously predeformed elastic medium. Wave Motion, 34 (2), 225−237. DOI: 10.1016/S0165-2125(00)00076-7.
1.1.
2001
Ravasoo, A.; Janno, J. (2001). Nondestructive characterization of materials with variable properties. Acta Mechanica, 151, 217−233.
3.4.
2001
Braunbrück, A.; Ravasoo, A. (2001). NDE of inhomogeneous nonlinear elastic material by ultrasound nonlinear interaction data. Defektoskopie 2001: Proceedings 31st International Conference: November 20-22, 2001, Prague, Czech Republic. Prague: Czech Society for Nondestructive Testing, 77−84.
5.2.
2001
Braunbrück, A.; Ravasoo, A. (2001). NDE of inhomogeneous nonlinear elastic material by ultrasound nonlinear interaction data. Book of Abstracts. 31th International Conference Defektoskopie 2001, Prague, Czech Republic, November 20 - 22, 2001. 30.
5.2.
2001
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (2001). Nonlinear waves in solids and inverse problems. Abstract, IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains, University of Stuttgart, Germany, August 20 - 24, 2001. 34.
5.2.
2001
Ravasoo, A. (2001). NDE based on the analysis of ultrasonic waves nonlinear interaction in inhomogeneously predeformed material. IVth International Workshop Advances in Signal Processing for Non Destructive Evaluation of Materials.August 7-10, 2001, Abstracts, Universite Laval, Quebec city, Canada. 64.
5.2.
2001
Ravasoo, A. (2001). Nonlinear distortion of ultrasonic wave profile and NDT. Program and Abstracts of the 6th International Workshop on Nonlinear Elasticity in Materials. Leuven, Belgium, June 18-22, 2001. 45.
5.2.
2001
Ravasoo, A. (2001). Nonlinear waves interaction and NDT. Finno-Ugric International Conference of Mechanics with Beda Symposium. Abstract, Savoyai Palace, Rackeve, Hungary, 27 May-2 June, 2001. 52.
1.2.
2000
Ravasoo, A.; Braunbrück, A. (2000). Wave interaction for characterization of nonlinear elastic materials. Proceedings of the Estonian Academy of Sciences. Engineering, 6 (3), 171−185.
3.1.
2000
Ravasoo, A. (2000). Nonlinear longitudinal waves interaction for inhomogeneously predeformed medium characterization. Nonlinear Acoustics at the Turn of the Millennium : ISNA 15, 15th International Symposium on Nonlinear Acoustics, Göttingen, Germany 1-4 September 1999. Ed. Lauterborn, W.; Kurz, T. Melville (New York): AIP Publishing, 337−340. (AIP Conference Proceedings; 524). DOI: 10.1063/1.1309236.
3.4.
2000
Braunbrück, A.; Ravasoo, A. (2000). Simulation of nonlinear wave interaction for elastic material properties evaluation. Proceedings of the 13th Nordic Seminar on Computational Mechanics (NSCM-13): Oslo, 20-21 October, 2000. _EditorsAbbr Hellesland,J.; Osnes,H.; Skeie,G. Oslo: Mechanics Division, Department of Mathematics, University of Oslo, 66−69. (Mechanics and Applied Mathematics Series; 7).
5.2.
2000
Ravasoo, A. (2000). Wave profile distortion and NDT of inhomogeneously predeformed material. Book of Abstracts Elastic Waves in Nondestructive Testing: Euromech 419 Colloquium, Prague, Czech Republic, 3-6 October 2000. 15.
5.2.
2000
Ravasoo, A. (2000). Nonlinear wave interaction for material characterization. 4th EUROMECH Solid Mechanics Conference, Metz, France, June 26-30, 2000, Book of Abstracts II, General sessions, Universite de Metz, France. 706.
1.1.
1999
Ravasoo, A. (1999). Nonlinear longitudinal waves in inhomogeneously predeformed elastic media. Journal of the Acoustical Society of America, 106 (6), 3143−3149.
1.1.
1999
Ravasoo, A. (1999). Nonlinear waves in characterization of inhomogeneous elastic material. Mechanics of Materials, 31 (3), 205−213. DOI: 10.1016/S0167-6636(98)00061-1.
1.2.
1999
Ravasoo, A.; Braunbrück, A. (1999). Nonlinear interaction of longitudinal waves in elastic material. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 48, 252−264.
3.1.
1999
Engelbrecht, J.; Ravasoo, A.; Salupere, A. (1999). Stress and solitary waves in solids. Structural Dynamics: Proceedings of the Fourth European Conference on Structural Dynamics EURODYN '99/Prague/Czech Republic/7-10 June 1999. Ed. Fryba,L.; Naprstek,N. Rotterdam: Balkema, 23−30.
3.4.
1999
Braunbrück, A.; Ravasoo, A. (1999). Symbolic software application for modelling of wave interaction process. Proceedings of the Twelfth Nordic Seminar on Computational Mechanics (NSCM-12). _EditorsAbbr Kouhia,R.; Mikkola,M. Espoo: Helsinki University of Technology, 89−92.
5.2.
1999
Ravasoo, A. (1999). Nonlinear longitudinal waves interaction for inhomogeneously predeformed medium characterization. _EditorsAbbr International Symposium on Nonlinear Acoustics, ISNA-15.Symposium Program and Book of Abstracts, Göt. 52.
5.2.
1998
Ravasoo, A. (1998). Nonlinear effects of wave propagation and NDT. Fenno-Ugric Days of Mechanics with Heller Symposium.7-13 June, 1998, Ráckeve, Hungary. 1p.
5.2.
1997
Ravasoo, A. (1997). Nonlinear waves in characterization of inhomogeneous elastic medium. Book of Abstracts McNU'97: The 1997 Joint ASME, ASCE, SES Summer Meeting, Norris Center, Northwestern University, Chicago, USA, June 29-July 2.. 315.
1.1.
1996
Blanc, R.H.; Ravasoo, A. (1996). On the nonlinear viscoelastic behaviour of nylon fiber. Mechanics of Materials, 22 (4), 301−310.
5.2.
1996
Ravasoo, A. (1996). Nonlinear longitudinal waves for inhomogeneous materials characterization. Euromech Colloquium 354. Stress Waves in Solids for Materials Characterization, Chania, Greece, Sep. 17-20, 1996, Abstracts. TU Crete, 37.
5.2.
1996
Ravasoo, A. (1996). Mittelineaarsest akustodiagnostikast. Ettekannete kokkuvõtted: Eesti Teadlaste Kongress, Tallinn, 11-15 august 1996. Eesti Teaduste Akadeemia, 277.
1.1.
1995
Ravasoo, A. (1995). Ultrasonic nondestructive evaluation of inhomogeneous plane strain in elastic medium. Research in Nondestructive Evaluation, 7 (1), 55−68. DOI: 10.1007/BF01606419.
1.2.
1995
Janno, J.; Ravasoo, A. (1995). The method of finite differences in solving an inverse problem for oscillation of nonlinear viscoelastic rod. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 44 (4), 420−436.
5.2.
1995
Ravasoo, A. (1995). Non-linear acoustodiagnostics of inhomogeneous media. Program : Finno-Ugric Days of Mechanics, Rackeve, Hungary, 18-24 June 1995. 34.
1.2.
1994
Engelbrecht, J.; Ravasoo, A. (1994). From continuum mechanics to applications in the nondestructive testing. Bulletin of the Technical University of Istanbul, 47, 83−103.
5.2.
1994
Ravasoo, A. (1994). Non-linear acoustodiagnostics of inhomogeneously predeformed plates. Euromech 2nd European Solid Mechanics Conference, Genoa, Sep. 12-16, 1994 : Abstract Book. 525.
1.2.
1993
Равасоо, А. А. (1993). Нестационарные продольные волны в вязкоупругой среде с неоднородной предварительной деформацией. Извеcтия Академии Наук СССР. Механика твердого тела, 6, 91−99.
1.2.
1993
Ravasoo, A. (1993). Nonstationary longitudinal waves in viscoelastic medium with nonuniform predeformation. Mechanics of Solids, 28 (6), 89−97.
3.1.
1993
Ravasoo, A. (1993). Information extraction from ultrasound signals in inhomogeneously predeformed viscoelastic media. International Conference on Acoustic Sensing and Imaging, 29-30 March 1993, 369. London: IEE, 153−158. (IEE Conference Publications; 369).
5.2.
1993
Ravasoo, A. (1993). On some problems of acoustic diagnostics of inhomogeneous and viscoelastic media. Int. Conf. On Vibrations and Waves in Ecology, Technological Processes and Diagnostics, Abstracts.: Int. Conf. On Vibrations and Waves in Ecology, Technological Processes and Diagnostics, Minsk, 15-20 Sep. 1993 Minsk. 110.
5.2.
1993
Ravasoo, A. (1993). Some remarks on the nondestructive evaluation of an inhomogeneous predeformed state of rheological materials. Eight Int. Conf. on Mechanics of Composite Materials, Abstracts, Riga, 20-22.04.1993. 153.
1.2.
1991
Нигул, У.К., Равасоо, А. А. (1991). Нестационарные продольные волны в линейных неоднородных средах с Ei-памятью. Извеcтия Академии Наук СССР. Механика твердого тела, 2, 66−74.
1.2.
1991
Nigul, U.K.; Ravasoo, A.A. (1991). Nonstationary longitudinal waves in linear inhomogeneous media with Ei-memory. Mechanics of Solids, 26 (2), 62−71.
1.2.
1991
Ravasoo, A. (1991). Some remarks on the quasi-linear theory of viscoelasticity. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 40 (2), 122−129.
3.4.
1991
Ravasoo, A.; Engelbrecht, J. (1991). Deformation waves in hereditary inhomogeneous media. Mécanique, modelisation numerique et dynamique des materiaux : Rencontres Scientifiques du cinquantenaire 8-9-10 avril 1991. Marseille: Centre National de la Resherchere Scientifique, 291−304. (Publication du L.M.A.; 124).
5.2.
1991
Ravasoo, A. (1991). Effect of inhomogeneous predeformation on longitudinal wave in viscoelastic medium. Mechanics of Inhomogeneous Structures : Abstracts of the III All-Union Conference, Lvov, 17-19 Sept., 2. 275.
5.2.
1991
Ravasoo, A. (1991). Non-linear deformation waves in predeformed solids. Euromech Solid Mechanics Conference. München, Sept. 9-13, 1991. Abstracts.. 165.
5.2.
1991
Ravasoo, A. (1991). Transient one-dimensional wave in inhomogeneously predeformed viscoelastic medium. IX All-Union Acoustical Conference. Abstracts.: IX All-Union Acoustical Conference.. 24.
3.4.
1990
Ravasoo, A.A. (1990). On improving the efficiency of NDT. First Baltic-Scandinavian Symposium on Mechanics : Abstracts, Riga, 17 - 21 September 1990. 47−48.
1.1.
1989
Ravasoo, A. (1989). Propagation of non-linear waves in inhomogeneous hereditary media. International Journal of Non-Linear Mechanics, 24 (1), 57−64.
3.1.
1989
Ravasoo, A.A. (1989). Transient longitudinal waves in inhomogeneous media. Applied Mechanics : Proceedings of the International Conference on Applied Mechanics : August 21-25 1989, Beijing, China, 2. _EditorsAbbr Zhemin, Z. Oxford: Pergamon Press, 994−998.
1.1.
1988
Ravasoo, A.A. (1988). Propagation of a one-dimensional longitudinal-wave in an elastic medium with a nonuniform plane initial deformation. Soviet Applied Mechanics, 24 (9), 925−930.
1.2.
1988
Равасоо, А. А. (1988). Распространение одномерной продольной волны в упругой среде с плоской неоднородной предварительной деформацией. Прикладная механика, 24 (9), 103−109.
3.2.
1988
Равасоо, А. А. (1988). Нелинейное распространение одномерной продольной волны в неоднородной среде. Акустика и ультразвуковая техника : науч.-техн. сб. (56−60).. Киев: Тэхника.
5.2.
1988
Ravasoo, A. (1988). One-dimensional deformation waves in media with inhomogeneous properties. 27th Polish Solid Mechanics Conference Dedicated to the Memory of Witold Nowacki and Symposium on Inelastic Solids and structures Dedicated to the Memory of Antoni Sawczuk, Rytro, 29th Aug.- 3rd Sept. 1988. Warszaw: Polish Academy of Sciences, 140−141.
3.4.
1987
Ravasoo, A. (1987). One-dimensional ultrasonic waves in a predeformed hereditary medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 640 (83−89).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1987
Ravasoo, A.A. (1987). Propagation of the transient longitudinal wave with finite amplitude in inhomogeneous viscoelastic medium with faded memory. Abstracts of the II All-Union Conference on Mechanics of Inhomogeneous Structures. Lvov.. 232.
5.2.
1987
Ravasoo, A.A. (1987). Ultrasonic diagnostics of parameters of plane inhomogeneous deformed state of elastic medium. Abstracts of the All-Union Symposium on Application of Ultrasound in Industry and Medicine, Vilnius, 8-10 April 1987. Kaunas, KPI , 52−53.
1.2.
1986
Ravasoo, A.A. (1986). One-dimensional wave propagation in an inhomogeneous hereditarily elastic medium with E-memory. Mechanics of Solids, 21 (4), 154−159.
1.2.
1986
Равасоо, А. А. (1986). Распространение одномерных волн в неоднородной наследственно упругой среде с E-памятью. Извеcтия Академии Наук СССР. Механика твердого тела, 4, 147−152.
3.2.
1986
Ravasoo, A.A. (1986). Нелинейная акустодиагностика плоского неоднородно деформированного состояния среды. Векслер, Н. Д.. Проблемы нелинейной акустодиагностики : [сборник статей] (103−110).. Таллинн: Валгус.
3.4.
1986
Ravasoo, A (1986). On the ultrasonic stress determination in structural elements undergoing inhomogeneous two-parametric plane deformation (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 624 (115−124).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1986
Ravasoo, A.A. (1986). On determination of the strain-stress state of plates by ultrasonic method. VI All-Union Conference Shells and Spatial Structures for Roofs of Buildings, Abstracts. Tallinn, II. 13−14.
5.2.
1986
Ravasoo, A.A. (1986). On determination of the state of inhomogeneous plane strain of structures on the basis of wave effects of impact loading. VI All-Union Congress on Theoretical and Applied Mechanics, Abstracts.. 529−530.
1.2.
1985
Равасоо, А. (1985). Асимптотическое описание процесса распостранения одномерного импульса в неоднородной среде. Eesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika, 34 (2), 170−177.
3.2.
1985
Равасоо, А. А. (1985). The one-dimensional wave propagation in the inhomogenously prestressed media (in Russian). Zvolinski, N.V.; Grinfeld, M.A.; Engelbrecht, J.K.. Contributions to nonlinear mechanics of continuous media (161−171).. Tallinn: Valgus.
3.4.
1985
Ravasoo, A. (1985). Acousto-diagnostics of physical properties of the inhomogeneous standard viscoelastic medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 596 (143−151).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1984
Ravasoo, A. (1984). On the applicability of the first asymptotic approximation of the waveform distortion in acousto-diagnostics of an inhomogenous medium (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 575 (73−80).. Tallinn: Tallinna Polütehniline Instituut.
5.2.
1984
Ravasoo, A.A. (1984). Ultrasonic diagnostics of inhomogeneous viscoelastic medium. Abstracts of the All-Union Conference Methodics and Technics of the Ultrasound Spectroscopy.: All-Union Conference Methodics and Technics of the Ultrasound Spectroscopy, Vilnius. 79.
3.4.
1983
Ravasoo, A. (1983). On the determination of physical parameters of the inhomogenous medium by measuring the velocity and the intensity of the wave (in Russian). Tallinna Polütehnilise Instituudi Toimetised ; 551 (11−16).. Tallinn: Tallinna Polütehniline Instituut.
1.2.
1982
Равасоо, А. (1982). Распространение волн в среде с неоднородной начальной статической деформацией. Eesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika, 31 (3), 277−283.
5.2.
1982
Ravasoo, A.A. (1982). On determination of the inhomogeneous predeformed state of the medium by means of acouctic method (in Russian). Theses of Reports of the III All-Union Symposium on Physics of Acousto-Hydrodynamical Phenomena and Optoacoustics.: III All-Union Symposium on Physics of Acousto-Hydrodynamical Phenomena and Optoacoustics.. Tashkent, 15.
5.2.
1982
Ravasoo, A.A. (1982). Deformation waves in the medium with an inhomogeneous initial deformation. Abstracts. UTAM Symposium Nonlinear Deformation Waves, Tallinn: UTAM Symposium Nonlinear Deformation Waves, Tallinn. 40.
1.1.
1981
Ravasoo, A.A.; Engel'brekht, Yu.K. (1981). Transient wave processes in a viscoelastic medium. Soviet Physics: Acoustics, 27 (3), 262−263.
1.2.
1981
Равасоо, А. А., Энгельбрехт, Ю. К. (1981). Нестационарные волновые процессы в вязкоупругой среде. Акустический журнал, 27 (3), 469−471.
3.4.
1981
Равасоо, А. А., Энгельбрехт, Ю. К. (1981). Переходные волновые процессы деформации в вязкоупругой среде при импульсных воздействиях. Прикладные проблемы прочности и пластичности : методы решения задач упругости и пластичности : всесоюз. межвуз. сб. (3−10).. Горький: ГГУ.
1.1.
1979
Nigul, U.K; Ravasoo, A.A. (1979). Application of the second asymptotic approximation of pulse distortion in acoustic diagnostics of a layer on a half-space. Journal of Applied Mathematics and Mechanics, 43 (5), 1006−1013.
1.2.
1979
Нигул, У.К., Равасоо, А.А. (1979). Применение второго асимптотического приближения искажения импульса в акустодиагностике слоя на полупространстве. Прикладная математика и механика, 43 (5), 933−939.
5.2.
1972
Равасоо, А.А. (1972). Расчет гиперболо-параболоидальных покрытий по континуальной схеме. Проектирование и расчет седловидных висячих покрытий : тезисы докладов республиканской конференции. Таллинн: Таллинский политехнический институт, 17−18.
2.3.
1971
Равасоо, А. А. (1971). Исследование работы висячих покрытий гиперболо-параболической формы : автореферат ... кандидата технических наук (05.480). (Doktoritöö, Таллинский политехнический институт). Таллин: Таллинский политехнический институт.
3.4.
1971
Ravasoo, A.; Kulbach, V. (1971). An experimental investigation of saddle-shaped hanging roofs subjected to statical loading (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A ; 307 (25−33).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1971
Ravasoo, A.; Kulbach, V. (1971). Some results of calculation of saddle-shaped hanging roofs with elliptical boundaries (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A ; 307 (35−44).. Tallinn: Tallinna Polütehniline Instituut.
3.4.
1971
Равасоо, А.А. (1971). Седловидные висячие покрытия под статической нагрузкой. Сборник докладов по строительству: [доклады конференции молодых ученых и специалистов Прибалтики и Белорусской ССР по проблемам строительства в Риге 1971 г. ]. Таллин: НИПИсиликатобетон, 143−145.
5.2.
1971
Ravasoo, A.A. (1971). Behaviour of saddle shaped suspended roofs under statical load. Contributions and Theses of the IV Conference of Young Scientists and Experts from Balticum and Byelorussian SSR on the Problems of Civil Engineering. (67).IV Conference of Young Scientists and Experts from Balticum and Byelorussian SSR on the Problems of Civil Engineering.. Riga: Latvia.
3.4.
1970
Kulbach, V.; Ravasoo, A. (1970). Calculation of saddle-shaped hanging roofs with the method of collocation (in Russian). Tallinna Polütehnilise Instituudi Toimetised. Seeria A 295 (15−28).. Tallinn: Tallinna Polütehniline Instituut.
25.11.2020

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