Authors

Citation

A. Bostrom et al., ANTIPLANE ELASTIC-WAVE SCATTERING FROM A CURVED RANDOMLY ROUGH CRACK, Journal of applied mechanics, 61(4), 1994, pp. 835-842

Citations number

11

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Mechanics

Journal title

ISSN journal

0021-8936

Volume

61

Issue

4

Year of publication

1994

Pages

835 - 842

Database

ISI

SICI code

0021-8936(1994)61:4<835:AESFAC>2.0.ZU;2-6

Abstract

The problem of scattering of antiplane elastic waves from a rough crac
k is solved by means of an extension of the null field approach. The e
xtension consists of the expansion of certain matrix elements in terms
of a small parameter followed by an analytical ensemble averaging. Th
e geometry is taken to be two-dimensional, and the scatterer is a curv
ed crack with a small random roughness. Both effects due to overall cu
rvature and effects due to surface roughness are thus included in the
analysis. It is assumed that the roughness is one where the height has
less effect on the scattering than does the gradient (this is satisfi
ed whenever the correlation length of the surface roughness is much sm
aller than the curvature of the crack), and some numerical results are
given for this case. However, it is a straightforward extension of th
e analysis to consider cases where the height effects are included.