Determination of strain from holographic interferometric fringe analysis

Seung Ok Park

doi:10.1117/12.2316269

1 September 1996 Determination of strain from holographic interferometric fringe analysis

Seung Ok Park

Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 2778G4 (1996) https://doi.org/10.1117/12.2316269
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

Abstract

Strains under three dimensional deformation are determined from holographic interferometric fringe. For a cantilever beam subjected to the combined forces of out-of plane and in-plane deflection, holographic interferometric fringes are obtained experimentally. From a fringe pattern, the effect of the out-of plane deflection and the in-plane deflection are analysed, respectively. The 3rd order polynomial of displacement distribution is obtained using regression method. Therefore strain can be determined from the second derivative of the polynomial. The experimental result is compared with the numerical analysis by finite element method.

Citation Download Citation

Seung Ok Park "Determination of strain from holographic interferometric fringe analysis", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778G4 (1 September 1996); https://doi.org/10.1117/12.2316269

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