Periodic Structure Defects In Mechanical Surfaces Diagnosed Through Diffraction Phenomena Analysis

E. H. Soubari; C. Liegeois; P. Meyrueis; C. Gateau

doi:10.1117/12.965674

10 February 1981 Periodic Structure Defects In Mechanical Surfaces Diagnosed Through Diffraction Phenomena Analysis

E. H. Soubari, C. Liegeois, P. Meyrueis, C. Gateau

Proceedings Volume 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I; (1981) https://doi.org/10.1117/12.965674
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

Periodic surface defects in mechanical industry, caused for instance by cavitation, are very difficult to analyze when the size of the defects is too small for conventional methods of analysis. The use of coherent light with grazing angle allows us to process the diffraction phenomena through a Fourier transform device, to obtain data concerning the size, distribution, and shape characteristics of periodic effects. The results are very promising in geophysics for the study of natural periodic materials (surface and particle) and in the study of damage caused by cavitation in hydraulic equipment for nuclear power and in the petroleum industry. The data are analyzed with very simple equipment. Other applications of this process are possible. We are working on a coupling of computers for very fast and large scale automatized control.

Citation Download Citation

E. H. Soubari, C. Liegeois, P. Meyrueis, and C. Gateau "Periodic Structure Defects In Mechanical Surfaces Diagnosed Through Diffraction Phenomena Analysis", Proc. SPIE 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, (10 February 1981); https://doi.org/10.1117/12.965674

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