Electronic speckle carrier shearography for automated deformation measurement

Baishi Wang; Xi Zhang

doi:10.1117/12.165482

10 December 1993 Electronic speckle carrier shearography for automated deformation measurement

Baishi Wang, Xi Zhang

Proceedings Volume 2003, Interferometry VI: Techniques and Analysis; (1993) https://doi.org/10.1117/12.165482
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

By combining the carrier method and electronic speckle shearography, the electronic speckle carrier shearography is realized with a PC-based image processing system. The carrier method is introduced for the unambiguous determination of the deformation fringe order and sign, as well as, for the fringe compensation. The object displacement is automatically generated with A sequence of image processing algorithm. This technique can be applied to both out-plane deformation and the deformation gradient measurement. Its successful application to the rigidity evaluation of the valve of the diesel engine is also presented.

Citation Download Citation

Baishi Wang and Xi Zhang "Electronic speckle carrier shearography for automated deformation measurement", Proc. SPIE 2003, Interferometry VI: Techniques and Analysis, (10 December 1993); https://doi.org/10.1117/12.165482

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