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Comparative sensitivity study of vibro-acoustic modulation and damping as NDT techniques

Duffour, P; Morbidini, M; Cawley, P; (2006) Comparative sensitivity study of vibro-acoustic modulation and damping as NDT techniques. In: Thompson, DO and Chimenti, DE, (eds.) Review of Progress in Quantitative Nondestructive Evaluation, Vols 25A and 25B. (pp. 1453 - +). AMER INST PHYSICS

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Abstract

The sensitivities of the conventional damping test and a particular implementation of the emerging vibro-acoustic modulation (VAM) NDT technique have been compared on a set of mild steel beams cracked in the laboratory. The comparison showed very similar performances on the specimens used. Both techniques work best for lightly damped specimens and in setups such that the influence of the support can be minimized, but they also show a poor sizing performance. A preliminary explanation for this latter point is given.

Type:Proceedings paper
Title:Comparative sensitivity study of vibro-acoustic modulation and damping as NDT techniques
Event:32nd Annual Review of Process in Quantitative Nondestructive Evaluation
Location:Brunswick, ME
Dates:2005-07-31 - 2005-08-05
ISBN:0-7354-0312-0
Keywords:vibro-modulation, damping, sensitivity, CRACK
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Civil, Environmental and Geomatic Engineering

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