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- Title
VERIFICATION OF THE SHB TEST RESULTS BASED ON THE ONE-DIMENSIONAL STRESS WAVE THEORY.
- Authors
MASUDA, TOMOKAZU; SAITO, KENJI; MORITA, IZUMI; IKEDA, SHUSHI; MAKII, KOICHI; OGAWA, KINYA
- Abstract
In order to evaluate dynamic deformation behaviors under high strain rates, Kobe Steel has developed and applied a Split-Hopkinson Bar (SHB) apparatus. This paper discusses the validity of the strain measurements and strain rates measured by this SHB apparatus. The strain waves that propagated in the incident and transmitted bars and the specimen are captured using a high-resolution type high-speed photography in detail. The strain wave propagated many times in the incident and transmitted bars and the specimen when the specimen was not broken. The amount of the deformation of the specimen decreases with the propagation frequency of the incident wave. On the other hand, to improve accuracy at the strain and strain rate calculated by the one-dimensional stress wave theory, Young's modulus, the longitudinal wave speed, and the density were accurately determined. It was understood that the calculation value showed the strain and strain rate captured with the high-speed photography are a good agreement. As a result, the validity of the measurement accuracy of this SHB could be shown.
- Subjects
STRAINS &; stresses (Mechanics); STRESS waves; ELASTIC waves; ACOUSTIC emission; BENDING stresses; ELASTIC solids
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2008, Vol 22, Issue 9-11, p1068
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979208046335