This numerical study investigates heat generation and cure during the unsaturated flow of thermosetting resins in woven, stitched or braided fiber mats during mold filling in liquid composite molding (LCM), a popular technology to manufacture polymer-matrix composites. This study is relevant to those mats, which can be characterized as a dual-scale porous medium. An iterative, control-volume approach, based on energy and cure balances in a two-layer model representing fiber tows and gaps between tows, is used for developing discretized equations for average temperatures and cures in the tows and gaps respectively. A significant difference in the temperatures and cures of the gap and tow regions is observed. The proposed model deviates significantly from the conventional single-scale model used in most LCM simulations and highlights the need to adopt a different approach in modeling cure and temperature in dual-scale fiber mats.
Investigation of Heat Transfer and Cure During the Unsaturated Flow in Woven, Stitched and Unbraided Mats
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Jadhav, RS, & Pillai, KM. "Investigation of Heat Transfer and Cure During the Unsaturated Flow in Woven, Stitched and Unbraided Mats." Proceedings of the ASME 2003 Heat Transfer Summer Conference. Heat Transfer: Volume 3. Las Vegas, Nevada, USA. July 21–23, 2003. pp. 47-52. ASME. https://doi.org/10.1115/HT2003-47066
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