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Proceedings Paper

Moire measurements of the displacement field of a wall under dynamic load
Author(s): Erwin K. Hack
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Paper Abstract

Attached-grating moire was used to measure the displacement field of a wall that was sheared with both constant and cyclic load and, in a subsequent experiment, was deformed by a perpendicular load. A moire grid of large size (2 X 3 m2) was realized on the object surface. With its aid, the shear component in plane and one component of the out-of-plane displacement field, respectively, were determined by a phase shift algorithm. The results are compared to photogrammetric 3D data that were taken simultaneously. The calibration is discussed. We sketch the influence of phase errors and propose an algorithm to correct for them.

Paper Details

Date Published: 1 March 1994
PDF: 8 pages
Proc. SPIE 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, (1 March 1994); doi: 10.1117/12.169885
Show Author Affiliations
Erwin K. Hack, EMPA Duebendorf (Switzerland)


Published in SPIE Proceedings Vol. 2252:
Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics
Armin Gruen; Heribert Kahmen, Editor(s)

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