Estimation of plastic strain by fractal

YuZhong Dai; Fu-Pen Chiang

doi:10.1117/12.51126

1 January 1991 Estimation of plastic strain by fractal

YuZhong Dai, Fu-Pen Chiang

Proceedings Volume 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection; (1991) https://doi.org/10.1117/12.51126
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

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.

Citation Download Citation

YuZhong Dai and Fu-Pen Chiang "Estimation of plastic strain by fractal", Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); https://doi.org/10.1117/12.51126

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