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TAILOR FIBER PLACEMENT: Besting metal in volume production

机译：裁缝纤维放置：在批量生产中具有最佳的金属

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摘要

In the quest for more automated, less costly advanced composite manufacturing, liquid molding processes are finding favor. Among automotive composites researchers, for example, at least one group claims to have developed a resin transfer molding (RTM) process that has a 60-second molding cycle. No less important, however, is the need for an equally fast process for fabricating the dry preform. Complicating the quest is the fact that those who make preforms can no longer rely on quasi-isotropic laminates with local reinforcements if they are to compete with the latest in metals technology. In fact, advancements in computer-aided design (CAD) have enabled composite structural designs that offer more than 50 percent weight savings vs. lightweight metals, as well as a threefold increase in specific strength and stiffness. The question is how to affordably, reliably and quickly fabricate the resulting complex shapes that depend for their performance in the finished part on minimal quantities of precisely oriented fibers. Tailored Fiber Placement (TFP) is a unique stitched preforming process that could offer the answer.
机译：为了寻求更自动化，成本更低的先进复合材料制造，液体模塑工艺受到青睐。例如，在汽车复合材料研究人员中，至少有一组声称开发了具有60秒成型周期的树脂传递成型（RTM）工艺。然而，同样重要的是需要同样快速的过程来制造干燥的预成型件。使制造复杂的问题的事实是，如果要与最新的金属技术竞争，那些制造预成型坯的人将不再依赖具有局部增强作用的准各向同性层压板。实际上，计算机辅助设计（CAD）的进步已使复合结构设计比轻质金属减轻了50％以上的重量，并且比强度和刚度提高了三倍。问题是如何以经济，可靠和快速的方式制造出最终的复杂形状，而这些形状取决于它们在最终零件中的性能，取决于最少数量的精确定向的纤维。量身定制的纤维铺放（TFP）是一种独特的缝合预成型工艺，可以提供答案。

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