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Presentation Summary: Properties and Performance Group

Presentation Summary: Properties and Performance Group. NSF/DOE/APC Workshop: The Future of Modeling in Composites Molding Processes June 9-10, 2004. Properties and Performance Group. Pete Foss (GM) Larissa Gorbatikh, U New Mexico Byron Pipes, U. of Akron Ramesh Talreja, Texas A&M

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Presentation Summary: Properties and Performance Group

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  1. Presentation Summary:Properties and Performance Group NSF/DOE/APC Workshop: The Future of Modeling in Composites Molding Processes June 9-10, 2004

  2. Properties and Performance Group Pete Foss (GM) Larissa Gorbatikh, U New Mexico Byron Pipes, U. of Akron Ramesh Talreja, Texas A&M Michael G. Wyzgoski, Delphi

  3. Topics of Discussion • Short fiber reinforced thermoplastics • Long fiber reinforced thermoplastics • Joints • Nano-tubes and Nano-composites • Micromolding • Process-Properties-Performance Relationships

  4. Issues of Concern • Material nonlinearity and geometric nonlinearity • Fiber orientation distributions • Progressive damage and failure models • Dimensional stability • Long term durability • Effect of void distribution, geometry (aspect ratio etc.) • 3D stress analysis

  5. Issues of Concern • Multi-scale material modeling • Processing at nano and micro scales (what is molding at these scales?) • Emerging nano-technology for nano-composites • Multi-functionality

  6. Gaps – materials and measurements • High-strain rate data • High-strain measurement techniques • High-strain test standards • Models driven material characterization (RVE) • Compression vs. tension characterization

  7. Gaps – Processing and Manufacturing • Defects characterization (e.g. void size and shape distributions) • Fiber attrition, degree of cure, un-impregnated areas, etc. • Redefine “molding”

  8. Gaps – Sensor, Control and Automation • Melt temperature data • Temperature distribution and time variation • Pressure distribution • Flow rate

  9. Gaps – Design and Optimization • Joints

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