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Proceedings Paper

Effect of errors to a laser-speckle strain gauge
Author(s): Roland Kothbauer; Stefan J. Rupitsch; Bernhard G. Zagar
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Paper Abstract

This paper proposes a new arrangement for an interferometric laser‐speckle gauge. For the proposed set‐up geometrical inaccuracies are assumed. Therefore, we are looking for a sensor position, where the geometrical inaccuracies are having the smallest impact on the measurement result. For the measurement of an applied measurand vector to the observed specimen, we suggest a linear unbiased minimum variance estimator. Theory an measurement results using this estimator are shown for a specific measurement set‐up of the laser‐speckle strain gauge.

Paper Details

Date Published: 15 September 2007
PDF: 9 pages
Proc. SPIE 6716, Optomechatronic Sensors and Instrumentation III, 671603 (15 September 2007); doi: 10.1117/12.754174
Show Author Affiliations
Roland Kothbauer, Johannes Kepler Univ. (Austria)
Stefan J. Rupitsch, Johannes Kepler Univ. (Austria)
Bernhard G. Zagar, Johannes Kepler Univ. (Austria)


Published in SPIE Proceedings Vol. 6716:
Optomechatronic Sensors and Instrumentation III

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