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Research Papers

Thermal and Mechanical Response of a Carbon Fiber Reinforced Composite to a Transverse Impact and In-Plane Pulsed Electromagnetic Loads

[+] Author and Article Information
A. Barakati

Department of Mechanical and Industrial Engineering, The University of Iowa,  Seamans Center for the Engineering Arts and Sciences, Iowa City, IA 52242-1527

O. I. Zhupanska1

Department of Mechanical and Industrial Engineering, The University of Iowa,  Seamans Center for the Engineering Arts and Sciences, Iowa City, IA 52242-1527olesya-zhupanska@uiowa.edu

1

Corresponding author.

J. Eng. Mater. Technol 134(3), 031004 (May 07, 2012) (6 pages) doi:10.1115/1.4006507 History: Received September 22, 2011; Revised March 16, 2012; Published May 04, 2012; Online May 07, 2012

Thermal and mechanical response of a carbon fiber polymer matrix composite plate subjected to a transverse impact and in-plane pulsed electromagnetic loads is studied. Heat transfer analysis in the electrified composite plate for the electric currents of various waveforms (direct current (DC), alternating current (AC), and pulsed) is conducted, and the effects of the waveform parameters (characteristic time, peak, etc.) on the current-induced heating in the composite are investigated. The results show that pulsed electric currents cause significant temperature rises only in the regions immediately adjacent to the electric contact (composite-electrode interface). As for the mechanical response of the composite plate, it is found that the characteristics of the electromagnetic field (waveform, duration of application, and intensity) can significantly reduce deflection and stresses in the plate, and concurrent application of a pulsed electromagnetic load can effectively mitigate the effects of the impact load in the electrically conductive composites.

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Copyright © 2012 by American Society of Mechanical Engineers
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Figures

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Figure 1

Different waveforms of the applied electric current, J0p=106A/m2 and τc=10ms

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Figure 2

Maximum temperature in the plate versus time, J0p=106A/m2, τc=10ms

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Figure 3

The effect of τc on the maximum temperature in the plate, J0p=5·106A/m2

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Figure 4

Maximum temperature versus time for various pulsed currents, τc=10ms

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Figure 5

Temperature in the middle plane of the plate along the fiber direction at t=6 ms for various pulsed currents, τc=10ms

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Figure 6

Plate’s deflection versus time: effect of the various electromagnetic loads, τc=10ms

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