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Thermoelastic investigations for fatigue life assessment

Tomlinson, R.A. and Marsavina, L. (2004) Thermoelastic investigations for fatigue life assessment. Experimental Mechanics, 44 (5). pp. 487-494. ISSN 0014-4851

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Abstract

An investigation is presented on the suitability and accuracy of a thermoelastic technique for the analysis of fatigue cracks. The stress intensity factor ranges ΔKI and ΔKII are determined from thermoelastic data recorded from around the tip of a sharp slot in a steel specimen under biaxial load, in order to assess the accuracy of the technique. ΔKI and ΔK II are determined to within 4% and 9% of a theoretical prediction, respectively. The results from a similar test on a fatigue crack under biaxial load are also presented. These show that thermoelastic stress analysis is a rapid and accurate way of analyzing mixed-mode fatigue cracks. A discussion is given on the potential of thermoelastic stress analysis of propagating cracks.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright (c) 2004 Springer Science + Business Media. This is an author produced version of a paper published in ' Experimental Mechanics '. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Biaxial Fatigue cracks Thermoelastic stress analysis (TSA) Crack propagation Data reduction Steel Stress analysis Stress intensity factors Thermoelasticity Thermoelastic stress Thermoelastic technique Fatigue of materials biaxial fatigue fatigue crack stress intensity factor
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 24 Aug 2009 17:37
Last Modified: 08 Feb 2013 16:58
Published Version: http://dx.doi.org/10.1177/0014485104046091
Status: Published
Publisher: Springer Science + Business Media
Refereed: Yes
Identification Number: 10.1177/0014485104046091
URI: http://eprints.whiterose.ac.uk/id/eprint/9204

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