Three-dimensional contour of crack tips using a grating method

Klaus Andresen; Birger Kamp; Reinhold Ritter

doi:10.1117/12.49482

1 December 1991 Three-dimensional contour of crack tips using a grating method

Klaus Andresen, Birger Kamp, Reinhold Ritter

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49482
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Klaus Andresen, Birger Kamp, and Reinhold Ritter "Three-dimensional contour of crack tips using a grating method", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49482

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