Recent vibration analysis results at NTNU with video speckle interferometry

Jesus D. R. Valera; Ole Johan Lokberg

doi:10.1117/12.281154

17 September 1997 Recent vibration analysis results at NTNU with video speckle interferometry

Jesus D. R. Valera, Ole Johan Lokberg

Proceedings Volume 3098, Optical Inspection and Micromeasurements II; (1997) https://doi.org/10.1117/12.281154
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

We present an outline of vibration analysis techniques that we have used recently which are based on video speckle interferometry. The work described is carried and deals with the following subjects: the determination of composite vibration induced strain, with the use of both (a) speckle shearing interferometry and (b) electronic speckle pattern interferometry (ESPI); (c) two mode vibration analysis based on stroboscopic ESPI and (d) inexpensive techniques for multimode vibration analysis based on hybrid ESPI and laser velocimeter measurements.

Citation Download Citation

Jesus D. R. Valera and Ole Johan Lokberg "Recent vibration analysis results at NTNU with video speckle interferometry", Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); https://doi.org/10.1117/12.281154

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