A model of ultrasonic testing for cracks near a non-planar surface
Paper i proceeding, 2011

Based on the methodology of the 2D models presented at QNDE 2008 and QNDE 2009, this paper presents an extension to 3D of a model of ultrasonic testing for cracks near a non-planar back surface. The elastic wave scattering in a thick-walled component by an interior rectangular crack located near a back surface of arbitrary geometry is considered. The 3D wave scattering problem is solved using a hybrid boundary integral equation method (BIEM): a displacement boundary element method (BEM) for the back surface displacements is combined with an analytical technique for the hypersingular traction integral equation for the crack-opening displacements. The action of ultrasonic transducers in transmission and reception is taken into account in the model, and a few numerical examples illustrating the influence of the back surface geometry are given.

Ultrasonics

Modeling

BEM

Crack

BIE

Författare

Jonathan Westlund

Chalmers, Tillämpad mekanik, Dynamik

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

AIP Conference Proceedings

0094-243X (ISSN) 1551-7616 (eISSN)

Vol. 1335 75-82

Ämneskategorier

Maskinteknik

DOI

10.1063/1.3591842

ISBN

978-073540888-3