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TECHNICAL PAPERS

Gate Effectiveness in Controlling Resin Advance in Liquid Composite Molding Processes

[+] Author and Article Information
Ali Gokce, Suresh G. Advani

Department of Mechanical Engineering, University of Delaware, Newark, DE 19716

J. Manuf. Sci. Eng 125(3), 548-555 (Jul 23, 2003) (8 pages) doi:10.1115/1.1559162 History: Received February 01, 2001; Revised September 01, 2002; Online July 23, 2003
Copyright © 2003 by ASME
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References

Figures

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(a) The gate at x=0 is switched on as soon as the flow reaches it. (b) The gate at x=0 is switched on after the flow reaches x=0.3W, where W is the width of the mold. (c) The gate at x=0 is switched on after the flow reaches x=0.6W. In all cases, the flow proceeds from left to right from a line injection source on the left under constant flow rate until the gate is switched on.
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The decay in pressure gradients at the left and right flow fronts in an infinite 1D mold
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Effect of an impermeable wall on the pressure field
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Starting from three different initial conditions, a gate drives the flow front to the same state
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(a) Input and output configuration in mold I. (b) Discretization of the x and y axes for flow front advancement and gate location, respectively.
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Gate effectiveness (C̄) variation as the flow front moves away from the gate for 11 different gate locations. Note that, flow front location is given as multiples of the mold width W.
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11 gate effectiveness plots are collapsed onto a single plot through data manipulation: (a) matching the slopes, (b) Vertical shift
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Manipulability envelope for the class of molds under study. The lines with markers are from Fig. 6, whereas the other two are from Eq. (19).

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