Characterization of curved composite structure using laser infrared photothermal radiometry

Zhuying Chen; Chinhua Wang; Hong Qu

doi:10.1117/12.783589

17 January 2008 Characterization of curved composite structure using laser infrared photothermal radiometry

Zhuying Chen, Chinhua Wang, Hong Qu

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 672341 (2008) https://doi.org/10.1117/12.783589
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

The effects of curved-surface of both cylindrical and spherical samples with either a 2-layer structure (thin-film coating) or a continuous gradient structure (case hardened surface) are investigated. By appropriate signal processing, it is found theoretically that the curvature effect of both cylindrical and spherical samples can be eliminated under certain conditions and the PTR signal from the curved composite sample can be equivalent to a flat surface with same structure.

Citation Download Citation

Zhuying Chen, Chinhua Wang, and Hong Qu "Characterization of curved composite structure using laser infrared photothermal radiometry", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 672341 (17 January 2008); https://doi.org/10.1117/12.783589

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