Stress analysis of in-plane vibration of 2-D structures by a laser speckle method
- 15 August 1980
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 19 (16) , 2705-2708
- https://doi.org/10.1364/ao.19.002705
Abstract
By time-average recording of laser speckles formed on the surface of a structure under sinusoidal oscillation, isothetics along any direction can be obtained by Fourier filtering the resulting specklegram. Principal strains and stresses can then be calculated through the use of strain-rosette equations and the stress-strain law, respectively.Keywords
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