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Proceedings Paper

Drop-weight camera system for high-strain-rate mechanical testing
Author(s): G. M. Swallowe; S. Hamdan; X. Zeng; W. P. Schiffers
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Paper Abstract

This paper describes a Dropweight-High Speed Camera system designed to measure the uniaxial compressive stress-strain properties of polymers at the strain rates appropriate to ballistic and impact events over time scales of one to tens of milliseconds. The instrument compliments existing techniques and represents a novel development of existing equipment types. It operates at strain rates in the range of 102 to 103 and over a temperature range of 20 - 200 degree(s)C. Stress is calculated directly from a measured force obtained from a calibrated accelerometer and strain is calculated from the sample displacement measured directly using the high speed camera. The camera system has the capability of providing direct visualization simultaneously with stress information of the processes occurring during the deformation and fracture of materials and provides the ability to measure dynamic Poisson's ratios.

Paper Details

Date Published: 28 May 1997
PDF: 6 pages
Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); doi: 10.1117/12.273480
Show Author Affiliations
G. M. Swallowe, Loughborough Univ. (United Kingdom)
S. Hamdan, Univ. Pertanian Malaysia (Malaysia)
X. Zeng, Changsha Institute of Technology (China)
W. P. Schiffers, Loughborough Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 2869:
22nd International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; ALan M. Frank, Editor(s)

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