Experimental investigation of the cross-sensitivity and size effects of polyvinylidene fluoride film sensors on modal testing
Journal
Sensors
Journal Volume
12
Journal Issue
12
Start Page
16641
End Page
16659
ISSN
14248220
Date Issued
2012
Author(s)
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.
Subjects
Cantilever Beam
Cross-sensitivity
Pvdf Film Sensor
Size Effect
Transient Response
Polyvinylidene Fluoride
Membranes, Artificial
Polyvinyls
Polyvinylidene Fluoride
Cross Sensitivity
Engineering Applications
Experimental Investigations
Finite Element Calculations
Polyvinylidene Fluoride Film Sensors
Polyvinylidene Fluorides
Pvdf Film Sensors
Size Effects
Cantilever Beams
Fluorine Compounds
Modal Analysis
Natural Frequencies
Size Determination
Transient Analysis
Sensors
Polyvinyl Derivative
Polyvinylidene Fluoride
Article
Artificial Membrane
Chemistry
Computer Simulation
Human
Pressure
Transducer
Vibration
Computer Simulation
Humans
Membranes, Artificial
Polyvinyls
Pressure
Transducers
Vibration
Type
journal article