WIT Press


Crack Detection Using Spherical Incident Waves And Near-field Measurements

Price

Free (open access)

Paper DOI

10.2495/BE990321

Volume

25

Pages

10

Published

1999

Size

853 kb

Author(s)

C.J.S. Alves & P.M.C. Ribeiro

Abstract

In this text we present criteria for determining the location of a plane crack and an associated numerical method. We use spherical incident waves and measure the scattered field on some specified set of points. The numerical method for the plane crack identification uses a boundary finite element method for the computation of the direct problem. The behaviour of these numerical methods is analysed in several cases and simulations are presented. 1 Introduction Crack detection is a problem in non-destructive testing of materials which has been often addressed in the literature. This work can be viewed as a continuation and a co

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