赵红平, 叶琳, 陆中琪. PVDF压电薄膜在应力波测量中的应用[J]. 力学与实践, 2004, 26(1). DOI: 10.6052/1000-0992-2002-441
引用本文: 赵红平, 叶琳, 陆中琪. PVDF压电薄膜在应力波测量中的应用[J]. 力学与实践, 2004, 26(1). DOI: 10.6052/1000-0992-2002-441
APPLICATION OF PVDF GAUGE TO STRESS WAVE MEASUREMENT[J]. MECHANICS IN ENGINEERING, 2004, 26(1). DOI: 10.6052/1000-0992-2002-441
Citation: APPLICATION OF PVDF GAUGE TO STRESS WAVE MEASUREMENT[J]. MECHANICS IN ENGINEERING, 2004, 26(1). DOI: 10.6052/1000-0992-2002-441

PVDF压电薄膜在应力波测量中的应用

APPLICATION OF PVDF GAUGE TO STRESS WAVE MEASUREMENT

  • 摘要: 综合介绍了PVDF压力传感器的测试原理、动态标定实验,并采用定制的PVDF压力传感器测量了不同类型分层介质在冲击载荷作用下的压力衰减,说明了PVDF压力传感器在压力测量中有着很好的前景.

     

    Abstract: PVDF is a kind of gauges used to measurepressure, velocity, and acceleration. Theprinciple of PVDF gauge issystematically described in the paper. Split Hopkinson pressure bar (SHPB) wasused to have the dynamic calibration of customized PVDF gauges. Itshowed that the dynamic frequency response of PVDF gauges were high enough forimpact loading and noise signal was smaller compared with the signalfrom resistance strain gauges. We are used to PVDF gauges to measure thepropagation and attenuation of stress wave under impact loading todifferent assembled layers with different materials by 37\,mm caliber gasgun, including water, aluminum foam, granite and steel fiber reinforcedconcrete. The experiments show that aluminum foam is a good material for energy absorption and water is a nice material to unload when itoverflowed under dynamic loading. We conclude that PVDFgauges are suitable for dynamic stress wave measurement for itssmall size, high dynamic frequency response and wide linear pressuremeasurement.

     

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