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Optical Engineering

Digital Imaging Techniques In Experimental Stress Analysis
Author(s): W. H. Peters; W. F. Ranson
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Paper Abstract

Digital imaging techniques are utilized as a measure of surface displacement components in laser speckle metrology. An image scanner which is interfaced to a computer records and stores in memory the laser speckle patterns of an object in a reference and deformed configuration. Subsets of the deformed images are numerically correlated with the references as a measure of surface displacements. Discrete values are determined around a closed contour for plane problems which then become input into a boundary integral equation method in order to calculate surface traction in the contour. Stresses are then calculated within this boundary. The solution procedure is illustrated by a numerical example of a case of uniform tension.

Paper Details

Date Published: 1 June 1982
PDF: 5 pages
Opt. Eng. 21(3) 213427 doi: 10.1117/12.7972925
Published in: Optical Engineering Volume 21, Issue 3
Show Author Affiliations
W. H. Peters, University of South Carolina (United States)
W. F. Ranson, University of South Carolina (United States)

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