Material key parameters measurement method in the dynamic tensile testing at intermediate strain rates

Bai Chun-yu; Liu Xiao-chuan; Zhou Su-feng; Li Wei-ming; Shu Wan

doi:10.11883/1001-1455(2015)04-0507-06

Volume 35 Issue 4

Jun. 2016

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Bai Chun-yu, Liu Xiao-chuan, Zhou Su-feng, Li Wei-ming, Shu Wan. Material key parameters measurement method in the dynamic tensile testing at intermediate strain rates[J]. Explosion And Shock Waves, 2015, 35(4): 507-512. doi: 10.11883/1001-1455(2015)04-0507-06

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Material key parameters measurement method in the dynamic tensile testing at intermediate strain rates

doi: 10.11883/1001-1455(2015)04-0507-06

Aircraft Strength Research Institute of China, Xi'an 710065, Shaanxi, China

Received Date: 2013-11-29
Rev Recd Date: 2015-01-20
Publish Date: 2015-07-25

Abstract

Abstract

In order to obtain dynamic tensile mechanical properties of metal materials under intermediate strain rate with servo-hydraulic machine, an indirect measurement method without changing the original structure of the testing maching is proposed to achieve accurate dynamic tensile load. The authentic dynamic behaviors are acquired at the plastic stage due to the oscillations of test data measured by the load cell integrated to the machine. In addition, the measurement of strain is solved in a non-contact mode relating to the digital image correlation method. The testing results indicate that both solutions developed in this paper can successfully test the mechanical properties in the dynamic tensile tests of metal materials.
- solid mechanics,
- intermediate strain rate,
- servo-hydraulic machine,
- dynamic response,
- image processing

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References

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