Speckle interferometry as a tool for verifying finite element method (FEM) damage models

Torsten Flemming; Manfred H. F. Hertwig; Gerald Kress

doi:10.1117/12.195518

30 November 1994 Speckle interferometry as a tool for verifying finite element method (FEM) damage models

Torsten Flemming, Manfred H. F. Hertwig, Gerald Kress

Proceedings Volume 2342, Interferometry '94: Photomechanics; (1994) https://doi.org/10.1117/12.195518
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

As a consequence of the recent qualitative improvement of the phase fringe patterns by Thierry Floureux (1993) using electronic speckle pattern interferometry, the ability to precisely measure local displacement fields exists. With this new ability speckle interferometry becomes a tool for many applications where local effects are of great theoretical concern. The technique can be used to test and, if necessary, correct assumptions or simplifications used in theoretical models. This paper shows new applications of the improved speckle interferometric method, one being the detection of the various crack forms such as splits and delaminations (NDT) occurring in the above-mentioned fatigue-loaded specimens and their affect on the displacement field at the surface. The other one is using speckle interferometry as a tool for verifying or, respectively, updating FEM-damage models of fatigued specimens.

Citation Download Citation

Torsten Flemming, Manfred H. F. Hertwig, and Gerald Kress "Speckle interferometry as a tool for verifying finite element method (FEM) damage models", Proc. SPIE 2342, Interferometry '94: Photomechanics, (30 November 1994); https://doi.org/10.1117/12.195518

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