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Use of acoustic emissions in flexural fatigue crack growth studies on concrete

Shah, Santosh G and Kishen, Chandra J M (2012) Use of acoustic emissions in flexural fatigue crack growth studies on concrete. In: ENGINEERING FRACTURE MECHANICS, 87 . pp. 36-47.

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Official URL: http://dx.doi.org/10.1016/j.engfracmech.2012.03.00...

Abstract

The acoustic emission technique is used for monitoring the fatigue crack growth in plain concrete beams under three-point loading. Variable amplitude loading with step-wise increase in the maximum load is applied. The fatigue crack growth is continuously monitored using six acoustic sensors. The results of load, displacement, crack mouth opening displacement, acoustic events, and acoustic energy are simultaneously acquired during the test. It is seen that a Paris law type of relationship exists between the rate of increase of acoustic emission count per cycle and the stress intensity factor range. Using b-value analysis, different stages of fatigue fracture is explained. (C) 2012 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD
Keywords: Fatigue;Concrete;Acoustic emission;Paris law;b-Value
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 07 Jul 2012 03:36
Last Modified: 07 Jul 2012 03:38
URI: http://eprints.iisc.ernet.in/id/eprint/44763

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