Shearography with Synchronized Pressure Stressing
Non-destructive evaluation (NDE) techniques of optical video-based speckle interferometry are gaining importance as inspection tools, particularly by the aerospace industry [1,2]. An optical technique such as shearography is attractive to the NDE community largely because of its non-contacting nature, full-field measurement and fast inspection results. However, in order for this optical interferometric method to become widely used as an NDE tool, this technique must be made to be robust enough to operate in noisy environments typically found in industry settings. In this paper, we address these issues for the case of detection of disbonds using shearography in conjunction with synchronized pressure stressing.
KeywordsFoam Epoxy Assure Crest
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- 1.D.D. Burleigh, Shearographic NDT of Foam Insulation for Cryogenic Fuel Tanks, Spring Conference of the American Society for Nondestructive Testing, Orlando, Florida (1992).Google Scholar
- 2.J.F. Clarady, Electronic Holography and Shearography NDE for Inspection of Modem Materials and Structures, Spring Conference of the American Society for Nondestructive Testing, Orlando, Florida (1992).Google Scholar
- 3.Y. Y Hung, Shearography: A Novel and Practical Approach for Non-Destructive Inspection, Journal of Non-Destructive Evaluation, Vol. 8, No. 2., p. 55 (1989).Google Scholar
- 6.B.F. Pouet, T.C. Chatters, and S. Krishnaswamy, Synchronized Reference-Updating Technique for Electronic Speckle Interferometry (submitted to the Journal of Nondestructive Testing) (1992).Google Scholar
- 7.F.S. Chau, H.M. Shang, S.L. Toh, and C.J. Tay, Some Examples of Non-Destructive Flaw Detection by Shearography, Journal of Non-Destructive Evaluation, Vol. 8, No. 4, p. 225 (1989).Google Scholar