NDLI: Experimental Investigation of the Cross-Sensitivity and Size Effects of Polyvinylidene Fluoride Film Sensors on Modal Testing

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Experimental Investigation of the Cross-Sensitivity and Size Effects of Polyvinylidene Fluoride Film Sensors on Modal Testing

Content Provider	MDPI
Author	Chuang, Kuo-Chih Ma, Chien-Ching Liou, Hong-Cin
Abstract	Due to advantages such as light weight, flexibility, and low cost, polyvinylidene fluoride (PVDF) films have been widely used in engineering applications as sensors for detecting strain, pressure, or micro-force. However, it is known that PVDF strain sensors have strain cross-sensitivity in mutually orthogonal directions. Furthermore, the size of the PVDF film sensor would also affect the dynamic strain sensing performance. In this paper, to investigate the cross-sensitivity and size effects experimentally, we employ PVDF film sensors to perform dynamic measurements on a cantilever beam. Since the vibrations of the cantilever beam are excited by impacts of a steel ball, the induced highly repeatable transient responses contain a wide range of resonant frequencies and thus can be used to investigate both the size and cross-sensitivity effects of the PVDF film sensors in a dynamic sensing environment. Based on the experimental results of the identified resonant frequencies compared with results obtained from a strain gauge, finite element calculations, and theoretical predictions, suggestions for the use of the PVDF strain sensor in modal testing are given in this paper.
File Size	1248256
Ending Page	16659
Page Count	19
Starting Page	16641
File Format	PDF
e-ISSN	14248220
DOI	10.3390/s121216641
Journal	Sensors
Issue Number	12
Volume Number	12
Language	English
Publisher Date	2012-12-04
Access Restriction	Open
Subject Keyword	PVDF film sensor cantilever beam cross-sensitivity size effect transient response
Content Type	Text
Resource Type	Article

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