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A 1-D Infiltration/cure model was developed to simulate fabrication of advanced textile composites by the resin film infusion process. The simulation model relates the applied temperature and pressure processing cycles, along with the experimentally measured compaction and permeability characteristics of the fabric preforms, to the temperature distribution, the resin degree of cure and viscosity, and the Infiltration flow front position as a function of time. The model also predicts the final panel thickness, fiber volume fraction, and resin mass for full saturation as a function of compaction pressure. Composite panels were fabricated using the RTM (Resin Transfer Molding) film infusion technique from knitted, knitted/stitched, and 2-D woven carbon preforms and Hercules 3501-6 resin. Fabric composites were fabricated at different compaction pressures and temperature cycles to determine the effects of the processing on the properties. The composites were C-scanned and micrographed to determine the quality of each panel. Advanced cure cycles, developed from the RTM simulation model, were used to reduce the total cure cycle times by a factor of 3 and the total Infiltration times by a factor of 2.NTIS controlled terms: Composite materials - Composite structures - Epoxy resins - Fabrics - Forming techniques - Temperature distribution - Casting - Compacting - Infiltration - Permeability - Preforms - Simulation - Time [ Last edited by 科学狂牛 on 2010-12-15 at 14:28 ] |
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Composite panels were fabricated using the RTM (Resin Transfer Molding) film infusion technique from knitted, knitted/stitched, and 2-D woven carbon preforms and Hercules 3501-6 resin. Fabric composites were fabricated at different compaction pressures and temperature cycles to determine the effects of the processing on the properties. The composites were C-scanned and micrographed to determine the quality of each panel. Advanced cure cycles, developed from the RTM simulation model, were used to reduce the total cure cycle times by a factor of 3 and the total Infiltration times by a factor of 2. 制备复合板使用针织，针织/缝合和RTM（树脂传递成型）膜渗透技术的两维机织碳纤维预成品及Hercules 3501-6树脂。在不同压制压力和温度循环时制作了织物复合材料，以确定对性能的处理效果。该复合材料进行C-扫描和进行显微观察以确定每个面板的质量。从RTM仿真模型中得到优异的凝固周期，被用来减少3倍的凝固周期，总渗透周期减少2倍。 |
6楼2010-12-15 19:54:17
2楼2010-12-15 19:16:22
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The simulation model relates the applied temperature and pressure processing cycles, along with the experimentally measured compaction and permeability characteristics of the fabric preforms, to the temperature distribution, the resin degree of cure and viscosity, and the Infiltration flow front position as a function of time。 模拟模型与实际温度和处理循环的压力有关，并且与织物预成型的实验测量的凝结和渗透性能联系起来，包括温度分布，树脂凝固与粘度，以及前端随时间变化的渗透流等因素。 |
3楼2010-12-15 19:32:54
4楼2010-12-15 19:33:54
