A Light Scattering Technique For Measuring Plastic Strain In Metals

Richard R Zito

doi:10.1117/12.948550

2 December 1988 A Light Scattering Technique For Measuring Plastic Strain In Metals

Richard R Zito

Proceedings Volume 0976, Statistical Optics; (1988) https://doi.org/10.1117/12.948550
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

The S11 light scattering matrix element is a measurement of the total intensity of light scattered into a particular direction as a function of scattering angle. The S11 matrix element is peaked in the forward (specula') direction. Changes in the shape of the S11 curve may be used to detect the presence of micron-sized surface cracks in metals stretched beyond their elastic limit prior to failure. Shape changes are quantitatively monitored by studying changes in the kurtosis, or "flatness', of the Sii curve.

Citation Download Citation

Richard R Zito "A Light Scattering Technique For Measuring Plastic Strain In Metals", Proc. SPIE 0976, Statistical Optics, (2 December 1988); https://doi.org/10.1117/12.948550

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