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TECHNICAL PAPERS: Heat Transfer in Manufacturing

Optimal Temperature and Current Cycles for Curing of Composites Using Embedded Resistive Heating Elements

[+] Author and Article Information
A. Mawardi, R. Pitchumani

Composites Processing Laboratory, Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269-3139

J. Heat Transfer 125(1), 126-136 (Jan 29, 2003) (11 pages) doi:10.1115/1.1527903 History: Received March 21, 2001; Revised August 12, 2002; Online January 29, 2003
Copyright © 2003 by ASME
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Figures

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A curing process configuration with embedded resistive heating elements
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Illustration of (a) the three-stage piecewise constant cure current cycle and (b) the four-stage piecewise linear curve temperature cycle considered in the study
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Schematic diagram of simulated annealing optimization combined with simplex search algorithm
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Validation of the optimization results with the data from Ref. 2, for the resistive heating configuration using three carbon mats
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Optimal temperature and current cycles for curing a 1.27 cm-thick EPON-815/EPICURE-3274 laminate embedded with (a) 0 carbon mat, (b) 1 carbon mat, (c) 2 carbon mats, and (d) 3 carbon mats
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Optimal temperature and current cycles for curing a 1.27 cm-thick OC-E701/P16N/BPO laminate embedded with (a) 0 carbon mat, (b) 1 carbon mat, (c) 2 carbon mats, and (d) 3 carbon mats
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Optimal temperature and current cycles for curing a 1.27 cm-thick CYCOM-4102 laminate embedded with (a) 0 carbon mat, (b) 1 carbon mat, (c) 2 carbon mats, and (d) 3 carbon mats
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Optimal temperature and current cycles for curing a 1.27 cm-thick CYCOM-4102 laminate embedded with 1 carbon mat for different critical values of constraints
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Temperature history at various locations within the laminate during curing process using the optimal temperature and current cycles for a 1.27 mm-thick CYCOM-4102 laminate, for critical temperatures of: (a) 150°C and (b) 125°C
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Normalized optimal cure time as a function of dimensionless Damköhler number
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Normalized cure time and power consumption savings as a function of number of carbon mats, for (a) EPON-815/EPICURE-3274, (b) OC-E701/P16N/BPO, and (c) CYCOM-4102

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