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Luo Binqiang, Wang Guiji, Tan Fuli, Zhao Jianheng, Sun Chengwei. MEASUREMENT OF DYNAMIC STRENGTH OF LY12 ALUMINUM UNDER MAGNETICALLY DRIVEN QUASI-ISENTROPIC COMPRESSION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(2): 241-247. DOI: 10.6052/0459-1879-13-227
Citation: Luo Binqiang, Wang Guiji, Tan Fuli, Zhao Jianheng, Sun Chengwei. MEASUREMENT OF DYNAMIC STRENGTH OF LY12 ALUMINUM UNDER MAGNETICALLY DRIVEN QUASI-ISENTROPIC COMPRESSION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(2): 241-247. DOI: 10.6052/0459-1879-13-227

MEASUREMENT OF DYNAMIC STRENGTH OF LY12 ALUMINUM UNDER MAGNETICALLY DRIVEN QUASI-ISENTROPIC COMPRESSION

Funds: The project was supported by the National Natural Science Foundation of China (11176002, 11272295) and Science Development Foundation of China Academy of Engineering Physics (2010A0201006).
  • Received Date: July 09, 2013
  • Revised Date: September 07, 2013
  • It is difficult to fully understand the yield strength of materials under high pressure and high strain rate loading. At present, strength measure under high pressure is mainly based on plate impact technique, in which the effects of strain rate and temperature increase during loading process on material dynamic strength are difficult to resolve. In this work, Lagrangian wave speed and strength of LY12 aluminum under magnetically driven quasi-isentropic compression are studied using CQ-4, a compact strip-line pulsed power generator for isentropic compression experiments. The optimizations of loading electrode and sample configuration, as well as experimental data processing are discussed in detail. Meanwhile, Lagrangian wave speed of LY12 aluminum along loading and unloading path and yield strength under quasi-isentropic compression up to 12GPa are obtained in a good accuracy.
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