Use of high-speed photography in the evaluation of polymer materials

John P. Dear

doi:10.1117/12.23953

1 April 1991 Use of high-speed photography in the evaluation of polymer materials

John P. Dear

Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.23953
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom

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.

Citation Download Citation

John P. Dear "Use of high-speed photography in the evaluation of polymer materials", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.23953

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