Abstract
Various Liquid Composite Molding processes provide out-of-plane impregnation. Thereby, the emerging pressure distribution leads to a hydrodynamic compaction of the fiber structure. A prediction of the behavior of the fiber structure under these conditions is highly complex, due to strong interdependencies between pressure distribution, compaction behavior, and impregnation behavior. In this study possibilities to influence the hydrodynamic behavior of textiles by preforming technology are investigated, by comparing an untreated glass fiber woven textile with sewed, bindered, sheared, and pre-compacted samples of the same material. A novel measurement apparatus, reproducing the conditions during out-of-plane impregnation, is applied for this purpose. It enables out-of-plane permeability determination simultaneous to online compaction monitoring. Sewing accelerates out-of-plane impregnation, while inactivated binder can preserve the available permeability at high injection pressures. The increasing superficial density and the geometrical changes caused by shearing decrease permeability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Composites Part A: Applied Science and Manufacturing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
