Local measurements of high-gradient in-plane displacement/strain fields by automated grating interferometry

Malgorzata Kujawinska; Leszek A. Salbut; Robert Sitnik

doi:10.1117/12.312956

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30 June 1998 Local measurements of high-gradient in-plane displacement/strain fields by automated grating interferometry

Malgorzata Kujawinska, Leszek A. Salbut, Robert Sitnik

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Proceedings Volume 3478, Laser Interferometry IX: Techniques and Analysis; (1998) https://doi.org/10.1117/12.312956
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Instrumentation and data postprocessing problems connected with local measurements of high gradient in-plane displacement/strain fields by automated grating interferometer are considered. A new version of waveguide grating microinterferometer is proposed. Various paths of postprocessing are investigated and data reduction and interpolation technique with adaptive size of elementary sampling area is recommended for strain and local material constant determination. The usefulness of the technique is shown on the base of ceramic-to-metal joint investigation.

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Malgorzata Kujawinska, Leszek A. Salbut, and Robert Sitnik "Local measurements of high-gradient in-plane displacement/strain fields by automated grating interferometry", Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); https://doi.org/10.1117/12.312956

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