Study on strain-sensing of PVDF films

PVDF films are one of most important smart materials. Firstly, the strain sensing principle of PVDF films was theoretically studied; then, the fabrication and installation technics of PVDF strain sensors was developed; thirdly, the quasistatic and dynamic sensing properties of PVDF sensors were also experimentally studied, which gives the voltage-sensitivity of PVDF sensors and the effects of size on the it. The research results show that the PVDF sensors were adaptive to the health monitoring of civil engineering due to its advantages of high sensitivity, wonderful linearity, easy to fabricate and install, and area monitoring, etc.