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Proceedings Paper

Holographic Interferometry As Means For Nondestructive Testing And Flaw Quantization
Author(s): W. Juptner
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Paper Abstract

Nondestructive testing (NOT) is usually used for determining, whether there is a defect in a material or not. Holographic interferometry by evaluation of the three dimensional deformation field gives additional information: Only flaws under tensile stress conditions influence the deformation field, but they are the critical ones. So, the holographic NDT is an absolute test method by taking into account the operational load. Furthermore, the evaluation of the three dimensional deformation field can be input to a FEM calculation in order to determine the internal stress distribution and to quantize the criticality of a detected defect, e.g. by adapting the ideas of fracture mechanics. The critical stress intensity factor KIc is a material property for crack propagation. The holographic interferometry is shown to be a good method to determine the KI-factor even for large test objects and without knowledge about the defect properties like size and location.

Paper Details

Date Published: 28 October 1987
PDF: 6 pages
Proc. SPIE 0699, Laser and Opto-Electronic Technology in Industry: State-of-the-Art Review, (28 October 1987); doi: 10.1117/12.936914
Show Author Affiliations
W. Juptner, BIAS (Germany)


Published in SPIE Proceedings Vol. 0699:
Laser and Opto-Electronic Technology in Industry: State-of-the-Art Review
Jingtang Ke; Ryszard J. Pryputniewicz, Editor(s)

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