Effect of errors to a laser-speckle strain gauge

Roland Kothbauer; Stefan J. Rupitsch; Bernhard G. Zagar

doi:10.1117/12.754174

15 September 2007 Effect of errors to a laser‐speckle strain gauge

Roland Kothbauer, Stefan J. Rupitsch, Bernhard G. Zagar

Proceedings Volume 6716, Optomechatronic Sensors and Instrumentation III; 671603 (2007) https://doi.org/10.1117/12.754174
Event: International Symposium on Optomechatronic Technologies, 2007, Lausanne, Switzerland

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.

Citation Download Citation

Roland Kothbauer, Stefan J. Rupitsch, and Bernhard G. Zagar "Effect of errors to a laser‐speckle strain gauge", Proc. SPIE 6716, Optomechatronic Sensors and Instrumentation III, 671603 (15 September 2007); https://doi.org/10.1117/12.754174

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