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An experimental approach for non-destructive evaluation of fatigue damage in CFRP composites

Bhat, MR and Murthy, CRL (1996) An experimental approach for non-destructive evaluation of fatigue damage in CFRP composites. In: 14th World Conference on NDT - Trends in NDE Science and Technology (14th WCNDT), DEC 08-13, 1996, NEW DELHI, INDIA.

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Official URL: http://www.ndt.net/abstract/wcndt96/data/584.htm


Study of fatigue phenomenon in composites requires a dynamic tool which can detect and identify different failure mechanisms involved. The tool should also be capable of monitoring the cumulative damage progression on-line. Acoustic Emission Technique has been utilized in the experimental investigations on unidirectional carbon fiber reinforced plastic (CFRP) composite specimens subjected to tension-tension fatigue. Amplitude as well as frequency distribution of Acoustic Emission (AE) signals have been studied to detect and characterize different failure mechanisms. For a quantitative measure of degradation of the material with fatigue load cycles, reduction in stiffness of the specimen has been measured intermittently. Ultrasonic imaging could give the information on the changes in the interior status of the material at different stages of fatigue life.

Item Type: Conference Paper
Publisher: A A Balkema
Additional Information: Copyright of this article belongs to A A Balkema.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 10 May 2011 08:51
Last Modified: 10 May 2011 08:51
URI: http://eprints.iisc.ac.in/id/eprint/37015

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