6 October 2003 The speckle sensor of vibration
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Proceedings Volume 5229, Laser Technology VII: Applications of Lasers; (2003) https://doi.org/10.1117/12.520773
Event: Laser Technology VII: Applications of Lasers, 2002, Szczecin, Poland
Abstract
The construction and the principle of operation of an instrument introduced to the measurement of the dynamic dislocations of solid body surfaces are presented in the study. The phenomenon of speckling of laser light scattered through the rough surface was utilized. A speckle pattern was recorded by using a digitally-controlled diode matrix. Many configurations of optical arrangements for generating patterns and for mapping them into the detector plane were tested. The developed instrument can measure all components of linear and angular dislocations. The best efficiency was obtained in the measurements of the transverse component of dislocation. The range and ratio of measurement are strongly dependent on the laser light power and on the quality of the photoelement used.
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R. Janiczek, Jerzy Pisarek, Artur Wojciechowski, "The speckle sensor of vibration", Proc. SPIE 5229, Laser Technology VII: Applications of Lasers, (6 October 2003); doi: 10.1117/12.520773; https://doi.org/10.1117/12.520773
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