High frequency solution of elastodynamic stress intensity factors due to the diffraction of plane longitudinal wave by an edge crack in a semi-infinite medium

• Autorzy: Pramanik R. K. , Pal S. C. , Ghosh M. L.
• Języki publikacji: EN

Abstrakty

EN

A harmonic in time, plane longitudinal wave is incident on a half-space containing a vertical edge crack. Both the incident field as well as the scattered field have been decomposed into symmetric and antisymmetric fields with respect to the plane of the crack, so that the problem is reduced to the boundary value problem for a 90° wedge. In both the symmetric and antisymmetric problem, incident body waves are at first diffracted by the edge of the crack. For a high frequency solution, the diffracted body wave rapidly decreasing after a few wave-lengths, the significant part of the diffracted wave is the Rayleigh wave which is reflected back from the corner of the wedge giving rise to a Rayleigh wave diffracted by the crack tip. This process of reflection of surface wave from the corner of the wedge and subsequent diffraction by the crack tip continues. Considering the contribution from the incident body waves and all the reflected Rayleigh waves, the stress intensity factors have been determined and their dependence on the frequency and on the angle of incidence has been depicted by means of graphs.

Słowa kluczowe

EN

Rayleigh waves; edge crack; crack-edge stress field analysis; semi-infinite medium

PL

fala Rayleigha; ośrodek półnieskończony

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 2002
• Tom: Vol. 43, no 2
• Strony: 113--132
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Pramanik R. K.

• Department of Mathematics, University of North Bengal, District Darjeeling - 734430, West Bengal, India

autor

Pal S. C.

• Department of Computer Science &: Application, University of North Bengal, District Darjeeling - 734430, West Bengal, India

autor

Ghosh M. L.

• Department of Mathematics, University of North Bengal, District Darjeeling - 734430, West Bengal, India

Bibliografia

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