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Proceedings Paper

Use of high-speed photography in the evaluation of polymer materials
Author(s): John P. Dear
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Paper Abstract

Three photographic studies are presented which capture the behaviour of material specimens as they are taken to and beyond their failure point by impact and other loading conditions. One is of a polymer sphere impacting onto a rigid flat surface and depending upon the impact velocity, the sphere can fail in different ways. The next study considers the propagation of a failure crack across the boundary of two bonded materials of different toughness. Streak photography is used to capture the change of crack velocity at the interface and other information. The final study relates to a free-flight striker impacting onto a rectangular sheet of polyethylene supported at its four corners. Above a given velocity, the striker will punch through the sheet but at impact velocities below thi s, there are several possibilities and some of these are examined.

Paper Details

Date Published: 1 April 1991
PDF: 6 pages
Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); doi: 10.1117/12.23953
Show Author Affiliations
John P. Dear, Imperial College (United Kingdom)

Published in SPIE Proceedings Vol. 1358:
19th Intl Congress on High-Speed Photography and Photonics
Peter W. W. Fuller, Editor(s)

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