Time-domain finite difference calculations for interaction of an ultrasonic wave with a surface-breaking crack
type: Item
instance of: scholarly article
title: Time-domain finite difference calculations for interaction of an ultrasonic wave with a surface-breaking crack
zbMATH Open document ID: 0601.73104
DOI: 10.1016/0165-2125(87)90051-5
published in: Wave Motion
publication date: 1987-01-01T00:00:00Z
review text: Four two-dimensional configurations are considered in this paper. The first two concern a homogeneous slab (0\(\leq y\leq H\), \(-\infty x<\infty)\), with a surface-breaking crack \((x=0\), \(0\leq y\leq a)\), and without such a crack. The other two configurations concern semi-infinite slabs of different mechanical properties which are in welded contact over \(x=0\), \(0\leq y\leq H\). One of these has a surface-breaking crack in the interface \((x=0\), \(0\leq y\leq a)\), 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 by 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 \(x=-H\), \(y=H\).
Mathematics Subject Classification ID: 74R05
Mathematics Subject Classification ID: 74J20
Mathematics Subject Classification ID: 74S99
zbMATH DE Number: 3970260
zbMATH Keywords: Four two-dimensional configurations
zbMATH Keywords: homogeneous slab
zbMATH Keywords: surface-breaking crack
zbMATH Keywords: without such a crack
zbMATH Keywords: semi-infinite slabs
zbMATH Keywords: different mechanical properties
zbMATH Keywords: welded contact
zbMATH Keywords: diffraction
zbMATH Keywords: corner reflection
zbMATH Keywords: ultrasonic displacement pulse
zbMATH Keywords: Time-domain calculations
zbMATH Keywords: finite difference method
zbMATH Keywords: full-field snapshots
zbMATH Keywords: time histories
author: Clyde L. Scandrett
author: J. D. Achenbach
MaRDI profile type: Publication
full work available at URL: 0165-2125(87)90051-5
OpenAlex ID: W1980337893
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description: scientific article; zbMATH DE number 3970260