Use of the Moiré Effect to Measure Plastic Strains

[+] Author and Article Information
A. Vinckier

Metals Joining Section, Metallurgy Department, Research Laboratories, Westinghouse Electric Corporation, Pittsburgh, Pa.

R. Dechaene

Commission pour l’Etude de la Construction Metallique, University of Ghent, Ghent, Belgium

J. Basic Eng 82(2), 426-434 (Jun 01, 1960) (9 pages) doi:10.1115/1.3662611 History: Received February 24, 1959; Online November 04, 2011


A method is described which should prove useful in the study of strain distribution in a metallic member during plastic deformation. Regularly spaced lines are drawn on a test specimen of interest and on a glass plate. After exposure to strain the part is photographed through the grid of lines on the glass. The strain distortion on the part results in an interference pattern from which the amount of plastic deformation may be calculated.

Copyright © 1960 by ASME
Topics: Deformation , Glass
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