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A crossbow system for high-strain-rate mechanical testing


Citation

Hamdan, S. and Swallowe, G. M. (1996) A crossbow system for high-strain-rate mechanical testing. Measurement Science and Technology, 7 (7). pp. 1068-1072. ISSN 0957-0233; ESSN: 1361-6501

Abstract / Synopsis

This paper describes a technique developed to measure the uniaxial compressive stress - strain properties of polymers at strain rates appropriate to ballistic and impact events over time scales of tens of microseconds using a crossbow as the projectile launch system. The instrument constructed represents a novel development of existing equipment types. The system is used for compression testing giving stress - strain measurements at strain rates of up to 10⁴ s⁻¹ and over a temperature range of 20-200°c . Stress is calculated directly from a measured force obtained from a calibrated pressure bar. Strain is calculated from the sample displacement measured directly from the intensity reduction of a laser-photodiode unit. The crossbow system provides a relatively inexpensive, reliable and compact alternative to a standard Hopkinson bar.


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Additional Metadata

Item Type: Article
Divisions: Universiti Pertanian Malaysia
DOI Number: https://doi.org/10.1088/0957-0233/7/7/011
Publisher: Institute of Physics
Keywords: Thermal; Strain rates; Stress - strain properties of polymers
Depositing User: Azhar Abdul Rahman
Date Deposited: 28 May 2015 08:56
Last Modified: 28 May 2015 08:56
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/0957-0233/7/7/011
URI: http://psasir.upm.edu.my/id/eprint/38566
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