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Proceedings Paper

An LED Illuminator For High Strain Rate Materials Studies
Author(s): Lee A. Cross; Edward A. Strader
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Paper Abstract

A light-emitting diode (LED) based illuminator system for use with a split Hopkinson bar (tensional Hopkinson bar) has been developed. Back-lit photographic images of samples undergoing rapid elongation at high strain rates can be recorded at framing rates up to 50 kHz. The photography is "shutterless," that is, the camera employed had no motion compensating optics or shutter. The framing of the camera was achieved by the short pulse duration of the light source. A simple rotating drum camera spinning up to 300 rps was used to record a sequence of several hundred images on a strip of 35 mm film 87 cm long.

Paper Details

Date Published: 2 November 1984
PDF: 5 pages
Proc. SPIE 0497, High Speed Photography, Videography, and Photonics II, (2 November 1984); doi: 10.1117/12.944498
Show Author Affiliations
Lee A. Cross, University or Dayton Researcn Institute (United States)
Edward A. Strader, University of Dayton Research Institute (United States)


Published in SPIE Proceedings Vol. 0497:
High Speed Photography, Videography, and Photonics II
Austin L. Vick, Editor(s)

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