PVDF压电计的动态响应特性及其在橡胶材料SHPB实验中的应用

庞宝君 杨震琦 王立闻 迟润强

庞宝君, 杨震琦, 王立闻, 迟润强. PVDF压电计的动态响应特性及其在橡胶材料SHPB实验中的应用[J]. 高压物理学报, 2010, 24(5): 359-367 . doi: 10.11858/gywlxb.2010.05.007
引用本文: 庞宝君, 杨震琦, 王立闻, 迟润强. PVDF压电计的动态响应特性及其在橡胶材料SHPB实验中的应用[J]. 高压物理学报, 2010, 24(5): 359-367 . doi: 10.11858/gywlxb.2010.05.007
PANG Bao-Jun, YANG Zhen-Qi, WANG Li-Wen, CHI Run-Qiang. PVDF Stress Gauges Dynamic Stress Measurement and Its Application to SHPB Experiment for Rubber Materials[J]. Chinese Journal of High Pressure Physics, 2010, 24(5): 359-367 . doi: 10.11858/gywlxb.2010.05.007
Citation: PANG Bao-Jun, YANG Zhen-Qi, WANG Li-Wen, CHI Run-Qiang. PVDF Stress Gauges Dynamic Stress Measurement and Its Application to SHPB Experiment for Rubber Materials[J]. Chinese Journal of High Pressure Physics, 2010, 24(5): 359-367 . doi: 10.11858/gywlxb.2010.05.007

PVDF压电计的动态响应特性及其在橡胶材料SHPB实验中的应用

doi: 10.11858/gywlxb.2010.05.007
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    通讯作者:

    杨震琦

PVDF Stress Gauges Dynamic Stress Measurement and Its Application to SHPB Experiment for Rubber Materials

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    Corresponding author: YANG Zhen-Qi
  • 摘要: 通过夹心式PVDF(Polyvinylide Fluoride)压电计的动态分离式Hopkinson压杆(SHPB)标定实验,系统地讨论了传感器的动态响应特性,其中包括测量电路、PVDF表面应力集中、压电计的材料及结构特性和同一压电计受多次撞击对测试信号的影响,为PVDF压电计的制作工艺研究提供参考。利用标定好的压电计测试了橡胶材料在SHPB实验中的动态应力均匀过程。结果表明:调节并联电阻值可以提高压电计的传感精度;增大压电计的敏感面积可以减小因应力集中所造成的信号失真;材料的热粘塑性性质、摩擦效应等将使信号振荡幅度偏小;多次撞击对信号的加载与卸载段都将产生影响,但当传感器表面未发生明显损伤时,测试的应力平台平均值与真实信号近似相同。

     

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出版历程
  • 收稿日期:  2009-09-23
  • 修回日期:  2009-12-04
  • 发布日期:  2010-10-15

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