Abstract

A method for displaying surface strain distribution in a plane plate is presented. The optical spatial filtering technique is applied, where the strain distribution is converted to the spectrum color bands in the image plane of the system. The principle and experiments to show its validity are described. The results confirmed that the method is useful for grasping the strain state semiquantitatively over the whole field. With this technique a practical experiment for measuring strain distributions in a plane metal plate is also performed.

© 1975 Optical Society of America

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