Materials testing at high constant strain rates
- 1 March 1982
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 15 (3), 280-282
- https://doi.org/10.1088/0022-3735/15/3/009
Abstract
An improved version of the split-Hopkinson pressure bar system for materials testing at high rates of loading is described. This new system has a preloading bar together with a pulse-shaping dummy specimen of the same material as the test specimen. Using the transmitted pulse through the pulse shaper as a tailored incident pulse for loading the test specimen enables testing to be carried out at virtually constant rates of strain, from about 100 s-1 to 300 s -1. This represents a significant improvement over the normal method where there can be considerable variation in strain rate throughout a test with a consequent uncertainty in the interpretation of the results.Keywords
This publication has 2 references indexed in Scilit:
- A compact gas gun for materials testingJournal of Physics E: Scientific Instruments, 1979
- Two-dimensional analysis of the split hopkinson pressure bar systemJournal of the Mechanics and Physics of Solids, 1975