Full Content is available to subscribers

Subscribe/Learn More  >

Modeling of Distribution Media and Vacuum Bag Properties on Permeability Variations During Vacuum Assisted Resin Transfer Molding (VARTM)

[+] Author Affiliations
Yuhong Zhang, Sergey Lopatnikov, Dirk Heider

University of Delaware

Paper No. IMECE2005-82732, pp. 1177-1184; 8 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Manufacturing Engineering and Materials Handling, Parts A and B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Manufacturing Engineering Division and Materials Handling Division
  • ISBN: 0-7918-4223-1 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


This paper investigates the deformation of the vacuum film into the distribution media, its effect on the change of the unit cell porosity and ultimately the reduction of permeability of the overall system in a Vacuum Assisted Resin Transfer Molding (VARTM) process. Experimental results have shown the obvious effects of the vacuum bagging penetration into the distribution media on permeability; however, there is no analytical model to explicitly characterize this phenomenon. In this paper, we proposed an analytical model to capture the vacuum film penetration into the distribution media based on an energy approach for the first time, and then we connect this analytical model with Carman-Kozeny equation to predict the permeability variations in terms of the parameters of plastic vacuum bag and distribution media. Design curves are obtained in parametric studies to predict the permeability reduction as a function of bag modulus and thickness, and distribution media geometry. These reduction factors can be used in flow simulations to accurately predict the resin filling time for a wide variety of distribution media/flexible bag systems. Simulation results are compatible with observations from the preliminary experiment results.

Copyright © 2005 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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 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