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Milestones: Processing and Manufacturing Group

The NSF/DOE/APC Workshop explores critical milestones in the modeling of composites molding processes, focusing on long-fiber thermoplastics and liquid molding techniques. Key gaps identified include fiber orientation, crystallization, and preform architecture, which need to be addressed to optimize part properties. By developing complete software packages and improving preform processes, we aim to achieve reliable, repeatable results. Our ultimate goal is to reduce cycle times to under one minute, enabling efficient production without extensive trial-and-error.

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Milestones: Processing and Manufacturing Group

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  1. Milestones:Processing and Manufacturing Group NSF/DOE/APC Workshop: The Future of Modeling in Composites Molding Processes June 9-10, 2004

  2. Injection Molding Milestone: Complete the IPPD loop for long-fiber thermoplastics Gaps: • fiber orientation, fiber length attrition • properties and durability • crystallization/shrink/warp We are there when: complete software package is available, provides results that we trust

  3. Liquid Molding 1 Milestone: Include preform processes and preform architecture in the IPPD loop Gaps: • relate preform architecture to permeability and processing • relate preform architecture to properties and performance We are there when: • part properties can be reliably and repeatably produced, and can be optimized

  4. Liquid Molding 2 Milestone: Increase the speed of the process Gaps: • preform architectures for rapid filling • understanding saturation for fast filling • preform deformation/fiber wash • flow and cure optimization • . . . (any other ways that modeling can address this issue) We are there when: cycle times approach 1 minute, with a technology that can be applied to new parts without trial-and-error

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