An experimental study on acoustic emission energy as a quantitative measure of size independent specific fracture energy of concrete beams

Sagar, Vidya R and Prasad, Raghu BK (2011) An experimental study on acoustic emission energy as a quantitative measure of size independent specific fracture energy of concrete beams. In: Construction and Building Materials, 25 (5). pp. 2349-2357.

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Abstract

Notched three point bend specimens (TPB) were tested under crack mouth opening displacement (CMOD) control at a rate of 0.0004 mm/s and during the fracture process acoustic emissions (AE) were simultaneously monitored. It was observed that AE energy could be related to fracture energy. An experimental study was done to understand the behavior of AE energy with parameters of concrete like its strength and size. In this study, AE energy was used as a quantitative measure of size independent specific fracture energy of concrete beams and the concepts of boundary effect and local fracture energy were used to obtain size independent AE energy from which size independent fracture energy was obtained. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Construction and Building Materials
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	Concrete; Fracture; Acoustic emission energy; Fracture energy; The size effect
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	31 Mar 2011 07:28
Last Modified:	31 Mar 2011 07:28
URI:	http://eprints.iisc.ac.in/id/eprint/36366

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