0
TECHNICAL PAPERS

A Closed Form Solution for Flow During the Vacuum Assisted Resin Transfer Molding Process

[+] Author and Article Information
K-T. Hsiao, R. Mathur, S. G. Advani

Department of Mechanical Engineering, Center for Composite Materials, University of Delaware, Newark, DE 19716

J. W. Gillespie

Department of Materials Science and Engineering, Department of Civil and Environmental Engineering, Center for Composite Materials, University of Delaware, Newark, DE 19716

B. K. Fink

Army Research Laboratory, Aberdeen Proving Grounds, MD 21005

J. Manuf. Sci. Eng 122(3), 463-475 (Sep 01, 1999) (13 pages) doi:10.1115/1.1285907 History: Received December 01, 1998; Revised September 01, 1999
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Applications of VARTM technology to the manufacture of large-scale composite parts for defense and civilian applications
Grahic Jump Location
Lay-up of materials in the SCRIMP/VARTM process
Grahic Jump Location
Two-layer model of resin flow in the VARTM process
Grahic Jump Location
Schematic of resin flow in the flow front region, in the two-layer model for VARTM
Grahic Jump Location
Variation of the ratio of flow rates into the flow front region in the x and y directions, Qx/Qy with the nondimensional flow parameter ε=K2xxh22/K2yyd2
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of thickness ratios
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of permeability of distribution medium
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of in-plane permeability of fiber preform
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of through transverse permeability of fiber preform
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of porosity of distribution medium
Grahic Jump Location
Flow front velocity and fill time as a function of length of the saturated region: effect of porosity of fiber preform
Grahic Jump Location
Comparison of the analytical model with numerical simulations: percentage errors in estimating the flow front length (d) and the time to fill a length of 40 cm are plotted against the flow parameter, ε
Grahic Jump Location
Example of a full-scale numerical simulation: (a) flow front history (time contours in seconds) (b) pressure distribution at the final time step (pressure contours in Pa)
Grahic Jump Location
Two mathematical roots of hf*(x*)=0. Note that only the smaller root is physically possible.
Grahic Jump Location
Illustration for resin mass balance in the flow front region in the two-layer model
Grahic Jump Location
Plot of the pressure gradient in the flow front region, ∂P/∂y(x), and the cumulative flow rate Cq(x)=∫0x−(K2yy/μ)(∂P/∂y)dx, from numerical simulation, when the flow front is at D=40cm . The values of the process parameters are: K2xx=8.8×10−7cm2,K2yy=4.4×10−7cm21=0.99,Φ2=0.5,h1=0.01cm , h2=1.0cm , P0=106Pa .

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In