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Proceedings Paper

Poling of PVDF matrix composites for integrated structural load sensing
Author(s): Ghazaleh Haghiashtiani; Michael A. Greminger; Ping Zhao
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Paper Abstract

The purpose of this study is to create and evaluate a smart composite structure that can be used for integrated load sensing and structural health monitoring. In this structure, PVDF films are used as the matrix material instead of epoxy resin or other thermoplastics. The reinforcements are two layers of carbon fiber with one layer of Kevlar separating them. Due to the electrical conductivity properties of carbon fiber and the dielectric effect of Kevlar, the structure acts as a capacitor. Furthermore, the piezoelectric properties of the PVDF matrix can be used to monitor the response of the structure under applied loads. In order to exploit the piezoelectric properties of PVDF, the PVDF material must be polarized to align the dipole moments of its crystalline structure. The optimal condition for poling the structure was found by performing a 23 factorial design of experiment (DoE). The factors that were studied in DoE were temperature, voltage, and duration of poling. Finally, the response of the poled structure was monitored by exposing the samples to an applied load.

Paper Details

Date Published: 8 March 2014
PDF: 9 pages
Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 906127 (8 March 2014); doi: 10.1117/12.2044494
Show Author Affiliations
Ghazaleh Haghiashtiani, Univ. of Minnesota, Duluth (United States)
Michael A. Greminger, Univ. of Minnesota, Duluth (United States)
Ping Zhao, Univ. of Minnesota, Duluth (United States)


Published in SPIE Proceedings Vol. 9061:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
Jerome P. Lynch; Kon-Well Wang; Hoon Sohn, Editor(s)

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