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Proceedings Paper

Speckle interferometry as a tool for verifying finite element method (FEM) damage models
Author(s): Torsten Flemming; Manfred H. F. Hertwig; Gerald Kress
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Paper 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.

Paper Details

Date Published: 30 November 1994
PDF: 10 pages
Proc. SPIE 2342, Interferometry '94: Photomechanics, (30 November 1994); doi: 10.1117/12.195518
Show Author Affiliations
Torsten Flemming, Swiss Federal Institute of Technology (Switzerland)
Manfred H. F. Hertwig, Swiss Federal Institute of Technology (Switzerland)
Gerald Kress, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 2342:
Interferometry '94: Photomechanics
Ryszard J. Pryputniewicz; Jacek Stupnicki, Editor(s)

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