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Experimental Mechanics

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01-12-2008

Kinematic Fields and Acoustic Emission Observations Associated with the Portevin Le Châtelier Effect on an Al–Mg Alloy

Authors: H. Louche, K. Bouabdallah, P. Vacher, T. Coudert, P. Balland

Published in: Experimental Mechanics | Issue 6/2008

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Abstract

This paper presents experimental tensile test results obtained on flat aluminum magnesium alloy samples on a hard machine. The mechanical response, kinematic fields and acoustic emissions were simultaneously obtained in an experimental setup. Propagation instabilities associated with the Portevin–Le-Châtelier effect were observed as localized intense strain increment bands. Depending on the strain rate, A, B or C types were studied on the basis of stress drops, acoustic emission and strain fields. Then the band characteristics (position, orientation, width, thickness reduction, intensity, acoustic emission, principal strain direction) were presented in various strain rate conditions.

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Title: Kinematic Fields and Acoustic Emission Observations Associated with the Portevin Le Châtelier Effect on an Al–Mg Alloy
Authors: H. Louche
K. Bouabdallah
P. Vacher
T. Coudert
P. Balland
Publication date: 01-12-2008
Publisher: Springer US
Published in: Experimental Mechanics / Issue 6/2008
Print ISSN: 0014-4851
Electronic ISSN: 1741-2765
DOI: https://doi.org/10.1007/s11340-008-9125-5

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