Localised laser-speckle strain sensor

Sebastian C. Schneider; Bernhard G. Zagar

doi:10.1117/12.530094

19 November 2003 Localised laser-speckle strain sensor

Sebastian C. Schneider, Bernhard G. Zagar

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.530094
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

There is a class of material testing problems that lend itself to a non-contacting way of obtaining the measurand. Especially for specimens, that are small to very small in one or two dimensions (e.g. thin foils or small diameter fibers), or are heated to high temperatures a non-contacting way of testing is imperative. In this paper we report on the theory and applicability of a laser speckle shift displacement gradient measurement system as well as practical results obtained with the discussed system. Some of the results presented can not be obtained with other than optical means, because of the fragility or the physical dimensions of the specimen.

Citation Download Citation

Sebastian C. Schneider and Bernhard G. Zagar "Localised laser-speckle strain sensor", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.530094

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