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1 April 1991 Dynamic photoelasticity with a split Hopkinson pressure bar
David R. Morris, A. J. Watson
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Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.24070
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom
Abstract
To observe the behaviour of materials subject to impact shock loads, accurate high frequency measurements are vital. The measurement of ultra short pulses (less than 50 microseconds) can be carried out by means of electrical resistance strain guages (ERSGs) . The ERSG's also pick up electromagnetic interference signals. Dynamic photoelasticity was used as a check for the ERSG records. Dynamic photoelastic tests were carried out using a Barr and Stroud CP5 high speed rotating mirror camera. The timing of the event and illumination was critical. Important confirmatory results were obtained by this technique.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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David R. Morris and A. J. Watson "Dynamic photoelasticity with a split Hopkinson pressure bar", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.24070
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KEYWORDS
Photoelasticity
Cameras
Electromagnetic interference
Mirrors
Resistance
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