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Monitoring Fatigue Crack Propagation in Compact Tension Specimens via Remote Sensing of Back Face Strain

Simha, KRY and Hande, HSS and Arora, PR (1993) Monitoring Fatigue Crack Propagation in Compact Tension Specimens via Remote Sensing of Back Face Strain. In: Journal of Testing and Evaluation, 21 (1). pp. 3-8.

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Official URL: http://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTE...

Abstract

Back face strain (BFS) measurement is now well-established as an indirect technique to monitor crack length in compact tension (CT) fracture specimens [1,2]. Previous work [2] developed empirical relations between fatigue crack propagation (FCP) parameters. BFS, and number of cycles for CT specimens subjected to constant amplitude fatigue loading. These predictions are experimentally validated in terms of the variations of mean values of BFS and load as a function of crack length. Another issue raised by this study concerns the validity of assigning fixed values for the Paris parameters C and n to describe FCP in realistic materials.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: fatigue crack propgation (FCP), back face strain (BFS), mean load, compact tension (CT)
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 24 Feb 2011 05:55
Last Modified: 24 Feb 2011 05:55
URI: http://eprints.iisc.ernet.in/id/eprint/35624

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