1. Experimental and theoretical investigations on sensing and dynamic characteristics of PVDF thin film
- Author
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Yu-Chih Lin, Yu-Hsi Huang, Chien-Ching Ma, and Chun-Kai Chang
- Subjects
Materials science ,Applied Mathematics ,Mechanical Engineering ,010401 analytical chemistry ,02 engineering and technology ,Thin film ,Composite material ,021001 nanoscience & nanotechnology ,0210 nano-technology ,Condensed Matter Physics ,01 natural sciences ,Finite element method ,0104 chemical sciences - Abstract
This research investigates both the steady-state and transient dynamic characteristics of polyvinylidene fluoride (PVDF), which is one of the most commonly used piezoelectric polymers. In steady-state vibration, the visible resonant mode fringe patterns are obtained using the amplitude-fluctuation electronic speckle pattern interferometry experiment, and the point-wise displacement data are measured by laser Doppler vibrometer–dynamic signal analysis. Finite element analysis is also performed, and the numerical results are compared with the experimental ones for the steady-state vibration. In a transient dynamic experiment, the history of dynamic impact generated by a steel ball is measured by the PVDF, and the experimental results are compared with the theoretical results obtained by the Hertz contact law. The comprehensive information about steady-state and transient dynamic properties of PVDF membranes obtained in this study is expected to contribute to the further development of the PVDF piezoelectric element.
- Published
- 2020
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