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Proceedings 2018, 2(8), 460; https://doi.org/10.3390/ICEM18-05359

Application of PVDF Gauges in Solid Interface

Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621000, China
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
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Published: 15 June 2018
PDF [1355 KB, uploaded 28 June 2018]

Abstract

It’s difficult to directly measure the pressure on the surface of the material in the impact process. PVDF (Polyvinylidene Fluoride) gauges may help to solve this problem. In this paper, some split Hopkinson pressure bar (SHPB) experiments were carried out with the PVDF gauges as specimens, with the strain gauges pasted on the bars being used as the measurement method. By comparing the results of the strain gauges and the PVDF gauges, it is proved that there is a stress concentration when the PVDF gauges were sandwiched directly in the solid interface. Then, two methods to eliminate the stress concentration are verified by experiments. The first method is adding a 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 PVDF gauge; SHPB experiment; stress concentration; strain gauge
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Deng, Z.; Xie, R.; Zhang, F.; Chen, G. Application of PVDF Gauges in Solid Interface. Proceedings 2018, 2, 460.

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