Stress-measurement method by PVDF gauge and its application to impact test for concrete

WU Xu-tao; HU Shi-sheng; TIAN Jie

doi:10.11883/1001-1455(2007)05-0411-05

Volume 27 Issue 5

Oct. 2014

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WU Xu-tao, HU Shi-sheng, TIAN Jie. Stress-measurement method by PVDF gauge and its application to impact test for concrete[J]. Explosion And Shock Waves, 2007, 27(5): 411-415. doi: 10.11883/1001-1455(2007)05-0411-05

Citation:

WU Xu-tao, HU Shi-sheng, TIAN Jie. Stress-measurement method by PVDF gauge and its application to impact test for concrete[J]. Explosion And Shock Waves, 2007, 27(5): 411-415. doi: 10.11883/1001-1455(2007)05-0411-05

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Stress-measurement method by PVDF gauge and its application to impact test for concrete

doi: 10.11883/1001-1455(2007)05-0411-05

1.
Department of Engineering Mechanics, Hefei University of Technology, Hefei 230009, Anhui, China;
2.
CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, Anhui, China

Publish Date: 2007-09-25

Abstract

Abstract

The direct stress measurement method by PVDF gauge is introduced. The dynamic piezo constant of PVDF gauge is calibrated on the SHPB set-up. Influences of stress concentration, Poisson effect, friction effect on the pulse and the dynamic piezo constant of PVDF gauge are discussed. The impact compression experiment of concrete is performed with PVDF gauges. The uniformity of stress within the concrete specimen is analyzed with the data from the PVDF gauges between the bar and the specimen, and combined the data directly measured from the strain gage glued on the specimen, the dynamic stress-strain curve is derived.
- mechanics of explosion,
- direct stress-measurement method,
- SHPB test,
- PVDF gauge,
- concrete