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Proceedings Paper

The splitting test method on dynamic tensile strength of Al2O3 ceramic material
Author(s): Xiaoqing Zhang; Xiaoqing Huang
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Paper Abstract

The splitting tensile test is an acceptable method for determining tensile strength at quasi-static strain rate. In the present paper, the experimental method on the dynamic splitting tensile test of ceramic is introduced based on the Split Hopkinson Pressure Bar (SHPB) test technique. In order to demonstrate the dynamic stress distribution in high strain rate splitting tensile test, the numerical simulation on the dynamic splitting tensile test of Al2O3 ceramic is carried out by using the FEM code LS-DYNA. The numerical simulation gives the stress distributions in the Al2O3 ceramic specimen under different loading cases. It is shown that the dynamic stress distributions are similar to that in the static situation. And the suitability of dynamic splitting tensile test for ceramic is verified. It can be seen that the high tensile stress area initiates firstly near the impact end of the specimen and spreads to the other end of the cylinder. In the numerical simulation the tensile stress that directly obtained in the specimen is compared with that obtained by the transmitted stress, and it can be seen that they are almost the same. This verifies the validity of dynamic splitting tensile test by using SHPB. Finally, it is can be concluded from the numerical simulation that the stress level and the rise time of pulse are the most important factors that affect the strain rate under different loading case.

Paper Details

Date Published: 25 August 2009
PDF: 5 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73755Y (25 August 2009); doi: 10.1117/12.839361
Show Author Affiliations
Xiaoqing Zhang, South China Univ. of Technology (China)
Xiaoqing Huang, South China Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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