PVDF薄膜机电特性试验装置设计  

An Experimental Setup Design to Study Electromechanical Characterization of PVDF Films

作　　者：狄长安[1] 薛松松[1] 夏镇娟 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《压电与声光》2014年第5期765-767,771,共4页Piezoelectrics & Acoustooptics

摘　　要：与采用悬臂梁或Hopkinson压杆等来研究聚偏二氟乙烯(PVDF)薄膜性能不同,该文针对PVDF压电薄膜在不同载荷和频率范围内机电响应特性问题,设计了一种可全面研究PVDF压电薄膜机电响应特性的试验装置。该装置由激振器加载部分与应变、加速度、动态力测量部分及试验台架组成,利用此装置可实现动态力的快速加载及加载力、应变及PVDF薄膜响应的同步测量。利用该试验装置对PVDF压电薄膜实施了动态加载试验,获得了较稳定的PVDF响应、应变及加载力的试验曲线,证实了该试验装置的可靠性,为PVDF压电薄膜粘弹性和压电特性的研究提供了一种试验手段。In this paper, a new experimental setup and experimental procedures differing from the studying PVDF films by beam cantilever and Hopkinson bar are reported, by which the electromechanical characterization of the PVDF films under quasi-static loads and dynamic loads in a wide frequency range can be researched. This experimental setup consists of three parts： a shaker to provide load and strain, the response of PVDF films and dynamic force measurement devices and a test stand, which can provide dynamic load rapidly and realize the synchronous measurement of force, strain and the response of PVDF films. Finally, a dynamic load test was implemented on PVDF films, and stable curves of PVDF, strain and loading force were obtained, confirmed the reliability of this experimental setup.

关 键 词：聚偏二氟乙烯(PVDF)薄膜 压电效应 准静态 机电特性 粘弹性 

分 类 号：TM22[一般工业技术—材料科学与工程] TM93[电气工程—电工理论与新技术]