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|Title:||Determination of the plastic zone by laser-speckle correlation||Authors:||Dai, Y.Z.
|Issue Date:||Dec-1991||Citation:||Dai, Y.Z., Tay, C.J., Chiang, F.P. (1991-12). Determination of the plastic zone by laser-speckle correlation. Experimental Mechanics 31 (4) : 348-352. ScholarBank@NUS Repository. https://doi.org/10.1007/BF02325992||Abstract:||Laser-speckle-pattern correlation is used for the determination of elastic-plastic boundary on the surface of well polished metal specimens. The method employs a converging laser beam to illuminate the test object. Diffracted verging laser beam to illuminate the test object. Diffracted images are recorded and processed on a computer-based vision system. Subsequent image-correlation analysis yields information on the surface deformation of the test objects. The technique is applied to a flat tensile specimen with two circular notches at the central portion. Measured plastic zone is compared with results obtained by the finite-element method. © 1991 Society for Experimental Mechanics, Inc.||Source Title:||Experimental Mechanics||URI:||http://scholarbank.nus.edu.sg/handle/10635/58089||ISSN:||00144851||DOI:||10.1007/BF02325992|
|Appears in Collections:||Staff Publications|
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