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Fracture Strength Distribution in E-Glass Fiber Using Acoustic Emission

Non-destructive Testing Lab., Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran

^* To whom correspondence should be addressed. E-mail: ahmadin{at}aut.ac.ir.

	Abstract

The strength of unidirectional composites is essentially dependent on the mechanical behavior of their reinforcement. The variability in mechanical properties of glass fibers has been studied using bundles of about 1400 filaments. This article proposes an experimental study on the fiber fracture strength distributions during tensile test by using acoustic emission (AE) in order to verify individual filament failures. AE monitoring of a bundle of E-glass fibers provides a convenient and relatively quick method to obtain the Weibull parameters of strength distribution. Results show that AE can be used as an effective tool to recognize the failure strength distribution as well as flaw population of fibers.

First published on October 12, 2009
Journal of Composite Materials 2009, doi:10.1177/0021998309347963


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