Acoustic emission at failure in quasi-brittle materials. From: Construction and Building Materials | Date: July 1, 2001| Author: Labuz, Joseph F.; Cattaneo, Sara; Chen, Li-Hsien | COPYRIGHT 2001 Reed Business Information. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Abstract

Development of failure in quasi-brittle materials is associated with microcracks, which release energy in the form of elastic waves called acoustic emission. From three types of tests -- diametral compression, flexure and indentation -- on specimens of high strength concrete, locations of acoustic emission were observed to form in the critically stressed region in a more or less diffuse manner for stress below the material's strength. However, as damage increase...

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