Computerization of Data Deduction in Shearography

D. W. Templeton; Y. Y. Hung

doi:10.1117/12.941683

17 February 1987 Computerization of Data Deduction in Shearography

D. W. Templeton, Y. Y. Hung

Proceedings Volume 0814, Photomechanics and Speckle Metrology; (1987) https://doi.org/10.1117/12.941683
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

This paper presents some preliminary success in computerizing data deduction in shearography. Computeriza is made possible by the introduction of a fringe carrier technique which removes the ambiguities in fringe interpretation. The technique is based on superposing a set of carrier fringes upon the deformation fringes. The resulting fringe pattern has monotonically increasing fringe orders, thus allowing the fringe orders to be determined in a straightforward mariner and without ambiguity. It is demonstrated that the data deduction process can be computerized. By digitizing the deformed carrier fringe pattern, the displacement derivatives can be automatically deduced by means of digital image processing.

Citation Download Citation

D. W. Templeton and Y. Y. Hung "Computerization of Data Deduction in Shearography", Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); https://doi.org/10.1117/12.941683

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