This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Sun Kyoung Kim Articles by Daniel, I. M. Search for Related Content Social Bookmarking                         What's this?

Observation of Permeability Dependence on Flow Rate and Implications for Liquid Composite Molding

College of Engineering, Seoul National University of Technology Seoul 139743, Korea

Isaac M. Daniel

Robert R. McCormick School of Engineering and Applied Science Northwestern University, Evanston, IL 60208, USA, imdaniel{at}northwestern.edu

The variation of permeability with the flow rate has been investigated. This variation is demonstrated by conducting specially designed experiments. The results show that permeability increases significantly as the flow rate increases. The implication of this observation is that the permeability measured under some given conditions is not always applicable to the actual molding situation. Furthermore, the permeability is not constant over both the space and time domains during the filling process. In order to take such dependence into account, a permeability model and an estimation technique for determining the coefficients of the model are proposed.

Key Words: composites processing • liquid molding • resin flow • preform permeability • flow rate effect • permeability model.

Journal of Composite Materials, Vol. 41, No. 7, 837-849 (2007)
DOI: 10.1177/0021998306067061


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?