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Proceedings Paper

Estimation of plastic strain by fractal
Author(s): YuZhong Dai; Fu-Pen Chiang
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Paper Abstract

It is shown that the power spectrum of a specimen surface in the form of a laser speckle pattern can be characterized by the fractal dimension which reflects change in surface texture due to plastic strain. The fractal dimension method can be used to evaluate surface roughness and plastic strain. A number of measure-scale pairs are tested, and the intensity-frequency pair is found to be best at relating fractal strain to plastic strain or surface roughness.

Paper Details

Date Published: 1 January 1991
PDF: 8 pages
Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); doi: 10.1117/12.51126
Show Author Affiliations
YuZhong Dai, SUNY/Stony Brook (United States)
Fu-Pen Chiang, SUNY/Stony Brook (United States)


Published in SPIE Proceedings Vol. 1332:
Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection
Chander Prakash Grover, Editor(s)

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