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A model of ultrasonic testing for cracks near a non-planar surface

Jonathan Westlund (Institutionen för tillämpad mekanik, Dynamik) ; Anders Boström (Institutionen för tillämpad mekanik, Dynamik)
AIP Conference Proceedings. 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE, San Diego, 18-23 July 2010 (0094-243X). Vol. 1335 (2011), p. 75-82.
[Konferensbidrag, refereegranskat]

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.

Nyckelord: BEM, BIE, Crack, Modeling, Ultrasonics

Denna post skapades 2011-12-20. Senast ändrad 2016-07-26.
CPL Pubid: 150591


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik


Teknisk mekanik

Chalmers infrastruktur