11 July 1989 Doppler Laser Interferometry And Low Expansion Materials - A Merging Of Technologies
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Proceedings Volume 1044, Optomechanical Design of Laser Transmitters and Receivers; (1989); doi: 10.1117/12.951296
Event: OE/LASE '89, 1989, Los Angeles, CA, United States
Abstract
An extremely sensitive, accurate, and versatile extensometer has been demonstrated for measuring minute thermally induced dimensional changes in large structures fabricated from materials with a near-zero, but difficult to predict, coefficient of thermal expansion (CTE) -such as laminated graphite-epoxy composites. The method employs a commercially available Doppler laser interferometer designed for extremely accurate translation measurements in large machine tools. Operation of the laser device is described together with the special precautions required, and results of thermally cycling a near-zero CTE graphite-epoxy I-beam.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert F. Karlak, Dave F Hotz, Alan K Haas, "Doppler Laser Interferometry And Low Expansion Materials - A Merging Of Technologies", Proc. SPIE 1044, Optomechanical Design of Laser Transmitters and Receivers, (11 July 1989); doi: 10.1117/12.951296; https://doi.org/10.1117/12.951296
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KEYWORDS
Aluminum

Helium

Optical benches

Optomechanical design

Receivers

Transmitters

Doppler effect

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