Design of a Slot-Coater-Based Layered-Composites Manufacturing System

[+] Author and Article Information
M. Haberer, C. B. Park, B. Benhabib

Computer Integrated Manufacturing Laboratory (CIMLab), Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada M5S 3G8

G. Zak

Department of Mechanical Engineering, Queen’s University, Kingston, ON, Canada K7L 3N6 e-mail: zak@me.queensu.ca

J. Manuf. Sci. Eng 125(3), 564-576 (Jul 23, 2003) (13 pages) doi:10.1115/1.1581888 History: Received July 01, 2001; Revised November 01, 2002; Online July 23, 2003
Copyright © 2003 by ASME
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Example of a photomicrograph used in studies of fiber-length distribution
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Effect of impeller speed on fiber volume fraction (error bars indicate range of measurements)
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Volume-fraction-experiment test specimen (all dimensions in mm)
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Fiber-length distribution for unprocessed fibers (MFX)
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Fiber-length distribution after 30 minutes agitation (MFX)
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Distribution of composite mixture at the entrance of the slot
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Nozzle-array configuration
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A typical industrial slot coater
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The composite liquid coater forms a wide film
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Placement of parts in the vat for volume-fraction experiments: (a) parts placed between nozzle paths and (b) parts placed in line with nozzle paths
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Plot of normalized volume fraction (υf2f1) for slot widths of 2 mm and 0.6 mm (error bars indicate range of measurements)
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Layer quality test specimen (all dimensions in mm)
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Layer profiles for composite parts made on (a) original system (point deposition) and (b) the new system (slot coating)
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Steps of the proposed RLM process
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Fiber-resin mixing subsystem
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Axial (a) and radial (b) impellers



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