Some improvements of the self-consistent method for measuring the dynamic yield strength of ductile metals

HU Jian-bo; DAI Cheng-da; YU Yu-yin; TAN Hua

doi:10.11883/1001-1455(2006)06-0516-06

Volume 26 Issue 6

Nov. 2014

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HU Jian-bo, DAI Cheng-da, YU Yu-yin, TAN Hua. Some improvements of the self-consistent method for measuring the dynamic yield strength of ductile metals[J]. Explosion And Shock Waves, 2006, 26(6): 516-521. doi: 10.11883/1001-1455(2006)06-0516-06

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HU Jian-bo, DAI Cheng-da, YU Yu-yin, TAN Hua. Some improvements of the self-consistent method for measuring the dynamic yield strength of ductile metals[J]. Explosion And Shock Waves, 2006, 26(6): 516-521. doi: 10.11883/1001-1455(2006)06-0516-06

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Some improvements of the self-consistent method for measuring the dynamic yield strength of ductile metals

doi: 10.11883/1001-1455(2006)06-0516-06

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2006-11-25

Abstract

Abstract

The experiment and data reduction techniques were improved in the self-consistent method (so called AC method). One-stepped sample and single-flyer instead of the usual two-stepped sample and two-layer combined flyer were used in loading-unloading experiments. This experimental configuration can meet the physical requirements and simplify the wave interaction of loading-unloading process. The location of elastic-plastic transition is more accurately identified based on the acquired Lagrangian sound velocity against particle velocity, relative to based on the Lagrangian sound velocity against engineering strain. The dynamic yield strength of LY12-aluminum treated by low temperature annealing at 20.0 GPa shock stress was measured by using the improved AC method. The results obtained by integral method and graphical method are consistent.
- mechanics of explosion,
- yield strength,
- AC method,
- LY12-aluminum,
- shock loading

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