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Proceedings Paper

Three-dimensional contour of crack tips using a grating method
Author(s): Klaus Andresen; Birger Kamp; Reinhold Ritter
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Paper Abstract

The 3-dimensional coordinates of a cross grating on a mainly plane surface are determined by stereo imaging. Instead of a photogrammetric method a comparably simple set of approximating imaging functions is used, which transform every point of the interesting spatial region into the stereo image coordinates. The inverse problem, evaluating 3d-coordinates from a related pair of image coordinates, is also solved by means of the imaging functions. Contour and plane strain of a crack tip were investigated by this method.

Paper Details

Date Published: 1 December 1991
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Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49482
Show Author Affiliations
Klaus Andresen, Technical Univ. Braunschweig (Germany)
Birger Kamp, Technical Univ. Braunschweig (Germany)
Reinhold Ritter, Technical Univ. Braunschweig (Germany)


Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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