Events The Eighteenth International Conference of Experimental Mechanics

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Published

This submission belongs to the session ICEM. ICEM 2018 of the event The Eighteenth International Conference of Experimental Mechanics

Published date

15 Jun, 2018

Citation

Zhifang Deng, Ruoze Xie, Fangju Zhang, Gang Chen, 238 Application of PVDF Gauges in solid interface, in Proceedings of The Eighteenth International Conference of Experimental Mechanics, Brussels, 1 July–5 July 2018, MDPI: Basel, Switzerland, doi: 10.3390/ICEM18-05359

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238 Application of PVDF Gauges in solid interface

Zhifang Deng ¹

Ruoze Xie ¹

Fangju Zhang ¹

Gang Chen ¹

1. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, China

Abstract

It’s difficult to directly measure the pressure on the surface of the material in the impact process. The PVDF (Polyvinylidene Fluoride) gauges may help to solve the problem. In this paper, some split Hopkinson pressure bar(SHPB) experiments were carried out with the PVDF Gauges as specimens. And the strain gauges pasted on the bars are used as measurement method. By comparing the results of the strain gauges and the PVDF gauges, it is proved that there are stress concentration when the PVDF gauges were sandwiched directly in the solid interface. Then two methods to eliminate stress concentration are verified by experiments. The first method is adding cushion, such as electrical tape. The second method is using 502 glue, which is evenly coated on the interface.

Keywords

PVDF gauge

SHPB experiment

stress concentration

strain gauge

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