Influence of fixing stress on the sensitivity of HNDT

Yu Xiao Yang; Yushan Tan

doi:10.1117/12.57468

1 December 1991 Influence of fixing stress on the sensitivity of HNDT

Yu Xiao Yang, Yushan Tan

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.57468
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Holographic Nondestructive Testing ( HNDT ) has a considerable potential for nondestructive inspection of laminated structure, composite structure and so on. The key of HNDT is stressing on the specimen in such a manner so as to distinguish the anomalous area from the normal area by displacement or deformation. In this paper, the principle of HNDT employed thermal stressing has been further studied. The influence of the stress caused by fixing device on the sensitivity of HNDT is proposed and verified experimentally. Experiments show that it is difficult to evaluate the anomalous area from the good area when the stress caused by fixing device is tensile stress. Clearly, the results of this paper can be served as the scientific basis for designing the fixture which examine above mentioned structures for flaw or defect.

Citation Download Citation

Yu Xiao Yang and Yushan Tan "Influence of fixing stress on the sensitivity of HNDT", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.57468

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