Abstract Due to industrial automation of liquid composite molding processes and increasing geometrical complexity of composite components, dry-spots from flow front junctions have become increasingly difficult to avoid. The impact and behavior of voids (microscopic or small macroscopic gas entrapments) during preform impregnation is well known, but no attention is given to dry-spots (large macroscopic gas entrapments). Experiments show that formation of a dry-spot in an early stage of an injection process does not necessarily lead to scrap parts. Therefore, simulation-based predictions of dry-spots are no sufficient condition for identification of unsuitable injection strategies. In this paper, the resolution mechanisms of dry-spots under controlled process conditions are investigated and the resulting findings of fundamental formation- and dispersion-mechanisms are presented.


    Access

    Download


    Export, share and cite



    Title :

    Analysis of dry-spot behavior in the pressure field of a liquid composite molding process


    Contributors:
    Bertling, D. (author) / Kaps, R. (author) / Mulugeta, E. (author)

    Published in:

    CEAS Aeronautical Journal ; 7 , 4 ; 577-585


    Publication date :

    2016-08-31


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Analysis of dry-spot behavior in the pressure field of a liquid composite molding process

    Bertling, D. / Kaps, R. / Mulugeta, E. | Online Contents | 2016


    Preforming for Liquid Composite Molding

    Carley, Earl P. / Dockum, John F. / Schell, Philip L. | SAE Technical Papers | 1990


    Liquid composite molding simulation software

    Emerald Group Publishing | 2002


    Preforming for liquid composite molding

    Carley,E.P. / Dockum,J.F. / Schell,P.L. et al. | Automotive engineering | 1990


    Liquid composite molding for aeronautical structures

    Laurenzi, S. / Marchetti, M. / Anamateros, E. | Tema Archive | 2006