Shearography and applications in experimental mechanics

Y.Y. Hung

doi:10.1117/12.269783

20 March 1997 Shearography and applications in experimental mechanics

Y.Y. Hung

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269783
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

I would like to share with you my experience of developing shearography and transferring the technology to industry. Shearography has already received wide industrial acceptance for nondestructive testing. Currently the rubber industry is routinely using shearography for evaluating tires and the aerospace industry has adopted the technique for nondestructive testing of composite structures. Many other industrial applications of shearography are presently underway. These include material evaluation, measurement of strains, residual stresses, 3-D shapes, fluid temperature, as well as vibration studies. There are three versions of shearography employing different recording media: photographic emulsion, thermoplastic and digital. Digital shearography employs a computerized process which is much more superior to the former versions. It uses video sensors (such as CCD) as recording medium and digital image processing technology to acquire the results thus eliminating the consumable materials used by the photographic and thermoplastic versions. Furthermore, the computerization of shearography has led to the automation of data deduction. This talk reviews computerized shearography and its applications.

Citation Download Citation

Y.Y. Hung "Shearography and applications in experimental mechanics", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269783

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