Mishakin, V. V., Dixon, S. and Potter, M. D. G. (2006) The use of wide band ultrasonic signals to estimate the stress condition of materials. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 39 (21). pp. 4681-4687. doi:10.1088/0022-3727/39/21/027

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Abstract

This paper reports the results from experimental studies of the effect of applied stress on the propagation of broadband ultrasonic pulses in selected samples of aluminium alloy. For one particular 5086 alloy of aluminium used, results have shown changes in the spectral characteristics of the detected ultrasonic signals with applied stress. In this case, measurements of the relative transit times for various bulk wave modes exhibit two distinct dependences on stress, for stresses below and above approximately 40-50MPa. These regions must be related to changes in the microstructural parameters of the material and we propose a possible mechanism for this that is consistent with the earlier published literature. It is also shown that by taking into account the influence of changes in the spectral characteristics of the signals in the process of loading in the elastic region, one is able to increase the accuracy of stress measurement by the ultrasonic method.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF PHYSICS D-APPLIED PHYSICS
Publisher:	IOP PUBLISHING LTD
ISSN:	0022-3727
Official Date:	7 November 2006
Dates:	Date Event 7 November 2006 UNSPECIFIED
Volume:	39
Number:	21
Number of Pages:	7
Page Range:	pp. 4681-4687
DOI:	10.1088/0022-3727/39/21/027
Publication Status:	Published

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