DocumentCode
1665873
Title
A laser-optical strain gauge and its application in material testing
Author
Zagar, Bernhard G. ; Schneider, Sebastian C.
Author_Institution
Dept. of Meas. Technol., Johannes Kepler Univ., Linz, Austria
Volume
1
fYear
2002
fDate
6/24/1905 12:00:00 AM
Firstpage
733
Abstract
In this paper we report on the theory and applicability of a laser speckle shift strain measurement system as well as some practical results obtained with the discussed system from fibers, foils and standardized specimen. Some of the results presented can not be obtained with other than optical means, because of the fragility and the small physical dimensions of the specimen.
Keywords
measurement by laser beam; optical sensors; rough surfaces; speckle; strain gauges; strain measurement; cross power-spectral-density; cross-correlation; fibers; foils; laser-optical strain gauge; localized strain measurement; material testing application; rigid body motion; rough surface; speckle displacements; speckle shift strain measurement system; standardized specimen; superresolution image processing; Adaptive optics; Capacitive sensors; Laser theory; Materials testing; Optical interferometry; Optical scattering; Optical sensors; Rough surfaces; Speckle; Strain measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
ISSN
1091-5281
Print_ISBN
0-7803-7218-2
Type
conf
DOI
10.1109/IMTC.2002.1006932
Filename
1006932
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