Time-domain finite difference calculations for interaction of an ultrasonic wave with a surface-breaking crack

C. L. Scandrett*, Jan Drewes Achenbach

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Four two-dimensional configurations are considered in this paper. The first two concern a homogeneous slab (0≤y≤H, -∞<x<∞), with a surface-breaking crack (x=0, 0≤y≤a), and without such a crack. The other two configurations concern semi-infinite slabs of different mechanical properties which are in welded contact over x=0, 0≤y≤H. One of these has a surface-breaking crack in the interface (x=0, 0≤y≤a), and the other has perfect contact over the whole interface. Results are presented for diffraction and corner reflection of an ultrasonic displacement pulse. Time-domain calculations have been carried out bu the use of the finite difference method. The results are presented as full-field snapshots of the displacement fields at specified times, and as time histories of the particle velocity at the midpoint of the transducer-specimen interface at x=-H, y=H.

Original languageEnglish (US)
Pages (from-to)171-190
Number of pages20
JournalWave Motion
Volume9
Issue number2
DOIs
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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