Sommario
Si studia l’interazione elastodinamica tra onde di volume e di superficie ed una fessura su un bordo in un quarto di piano. Si è fatto uso della fotoelasticità dinamica per ottenere un’informazione completa sull’analisi dei dati. Si sono effettuate misure della distribuzione di sforzo lungo i contorni liberi del quarto di piano ed i contorni della fenditura. Si sono ottenute le distribuzioni d’intensità di sforzo sia nell’angolo che nell’estremità difettosa e le distribuzioni superficiali di sforzo per le onde di Rayleigh diffratte e riflesse nella regione dell’angolo crepato.
Summary
The elastodynamic interaction between explosively generated body and surface wave and an edge crack in a quarter-plane is investigated. Dynamic photoelasticity was employed to obtain full-field information for data analysis. Measurements of the stress distribution along the free boundaries of the quarter-plane and along the crack walls have been made. Stress intensity distributions at both, the corner and the flaw tip and surface stress distributions for the diffracted and reflected Rayleigh-waves were obtained in the region near the cracked corner.
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Abbreviations
- P :
-
longitudinal wave
- S :
-
shear wave
- V :
-
head wave or von Schmidt wave
- R :
-
Rayleigh-wave
- X r X :
-
reflectedX-wave
- X f X :
-
diffractedX-wave
- X rc X :
-
wave reflected at crack face
- X d X :
-
wave diffracted at crack tip
- S d P :
-
S-wave generated by diffraction of incidentP-wave
- S r S d P :
-
S-wave generated by reflection of theS d P-wave
References
Achenbach J.D., Pao Y.H. andTiersten H.F. (Editors),Report of the Workshop on «Application of elastic waves in electrical devices, nondestructive testing and seismology». Northwestern University, May 24–26, 1976, NSF-Report.
Achenbach J.D., Gautesen A.K. andMendelsohn D.A.,Ray analysis of surface wave interaction with an edge crack. IEEE Transactions on Sonics and Ultrasonics, Vol. SU-27, 3, 121–129 (1980).
Mendelsohn D.A., Achenbach J.D andKeer L.M.,Scattering of elastic waves by a surface-breaking crack. Wave Motion 2, 277–292 (1980).
Mal A.K. andKnopoff L.,Transmission of Rayleigh-waves at a corner. Bull. Seism. Soc. Amer. 56, 455 (1966).
Hudson J.A. andKnopoff L.,Transmission and reflection of surface waves at a corner. II-Rayleigh-waves (theoretical). J. Geophys. Res. 69, 281 (1964).
Reinhardt H.W. andDally J.W.,Some characteristics of Rayleigh-wave interaction with surface flaws. Materials evaluation, 28, 213–220 (1970).
Henzi A.N. andDally J.W.,A photoelastic study of stress wave propagation in a quarter-plane. Geophysics 36, 2, 296–310. (1971).
Dally J.W.,Dynamic photoelastic studies of fracture. Exp. Mech. 19, 349–367, (1979).
Rossmanith H.P. (Editor),Rock Fracture Mechanics, CISM Lecture Notes No 275, Springer-Verlag, Vienna-New York (1983).
Viktorov I.A.,Rayleigh-type waves on a cylindrical surface. Soviet Physics-Acoustics, 4, 2, 131 (1958).
Dally J.W.,Introduction to dynamic photoelasticity. Exp. Mech. 20, 12, 409–416 (1980).
Rossmanith H.P. andKnasmillner R.E.,The wave front problem in dynamic photoelasticity. Acta Mech. (submitted for publication), (1984).
Sih G.C. (Editor),Mechanics of Fracture 1: Methods of Analysis and Solutions of Crack Problems. Noordhoff Int. Publ., Leyden (1973).
Dally J.W. andRiley W.F.,Experimental Stress Analysis.2nd Edition,McGraw-Hill,New York (1978).
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Rossmanith, HP. Elastic wave interaction with a cracked quarter-plane. Meccanica 20, 127–135 (1985). https://doi.org/10.1007/BF02337631
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DOI: https://doi.org/10.1007/BF02337631