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Proceedings Paper

Time-resolved deformation measurement with ESPI and a high-speed camera
Author(s): Andrew John Moore; Duncan P. Hand; James S. Barton; Julian D. C. Jones
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Paper Abstract

We describe a system that has enabled non-harmonic deformations to be measured with microsecond(s) temporal resolution for the first time with speckle pattern interferometry. The short exposure period and high framing rate of a high-speed camera at up to 40,500 frames per second allow low-power CW laser illumination and fiber-optic beam delivery to be used. The technique has been demonstrated in the laboratory and tested in preliminary industrial trials. The ability to measure vibration with high spatial and temporal resolution, which is not provided by techniques such as scanning laser vibrometry, has many applications in manufacturing design.

Paper Details

Date Published: 13 August 1999
PDF: 5 pages
Proc. SPIE 3744, Interferometry '99: Techniques and Technologies, (13 August 1999); doi: 10.1117/12.357750
Show Author Affiliations
Andrew John Moore, Heriot-Watt Univ. (United Kingdom)
Duncan P. Hand, Heriot-Watt Univ. (United Kingdom)
James S. Barton, Heriot-Watt Univ. (United Kingdom)
Julian D. C. Jones, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3744:
Interferometry '99: Techniques and Technologies
Malgorzata Kujawinska; Mitsuo Takeda, Editor(s)

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