| Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|---|---|---|
| Page(s) | 687 - 692 | |
| DOI | https://doi.org/10.1051/jp4:2006134106 | |
| Publié en ligne | 26 juillet 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 687-692
DOI: 10.1051/jp4:2006134106
Full field strain measurement during a tensile split Hopkinson bar experiment
A. Gilat1, T. Schmidt2 and J. Tyson21 The Ohio State University, Department of Mech. Eng., Columbus, Ohio 43210, USA
2 Trilion Quality Systems, West Conshohocken, Pennsylvania 19428, USA
Published online: 26 July 2006
Abstract
A method for full field measurement of strain (and strain
rate) during a tensile split Hopkinson bar test is introduced. The
measurements are done by using the ARAMIS three-dimensional image
correlation system. The system uses two digital high-speed cameras that
provide a synchronized stereo view of the specimen. Depending on the number
of pixels used, the system is capable of recording frames at a rate of up to
250,000 per second. The results show the complete strain field during the
tests, including details of the strain field when necking develops prior to
the failure. Before necking, when the deformation is homogeneous, the
strains from the ARAMIS system agree with the strain that is determined from
the elastic waves that are recorded in the incident and transmitter bars.
© EDP Sciences 2006