Blanking of Unidirectional Carbon Fibre Reinforced Plastics
Blanking of Unidirectional Carbon Fibre Reinforced Plastics
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单向碳纤维增强塑料的冲裁
DOI：
10.4028/www.scientific.net/amm.794.223
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
F. Klocke
中科院分区：
文献类型：
--
作者：
A. Shirobokov;Sophie Kerchnawe;M. Terhorst;P. Mattfeld;F. Klocke
纤维增强塑料 (FRP) 越来越多地用于先进应用，在这些应用中应以最小的重量实现适当的机械性能。预计各个行业的 FRP 使用量将大幅增加，例如：在不久的将来进入汽车行业。这导致了玻璃钢部件的大规模制造。降低玻璃钢部件的制造成本被认为是在大规模生产中使用这种材料的主要推动力。尽管 FRP 部件的制造接近最终形状，但它们通常必须在最后的制造步骤之一中进行穿孔或修整。随着产量的增加，与传统的磨料水射流切割或机加工相比，冲裁是一种可能更具成本效益的 FRP 部件修整和穿孔技术。 FRP在冲裁过程中分离的机理尚未研究。特别是，纤维相对于切割线的取向对切割力的影响尚不清楚。在这项工作的范围内，进行了用热固性树脂以不同纤维方向切割线冲裁单向碳纤维增强塑料的实验研究。结果表明，切割力从垂直于切割线的纤维方向到平行于切割线的方向逐渐减小。制定了这种依赖性的可能的机械解释。
Fibre reinforced plastics (FRP) are being increasingly used for advanced applications where an appropriate mechanical performance should be achieved at minimum weight. A substantial increase of the FRP usage is expected across various industries e.g. in automotive sector in the nearest future. This leads to the mass manufacturing of FRP components. Reduction of manufacturing costs of FRP components is regarded as the main enabler for the usage of this material in mass production. Although FRP components are manufactured near-net-shape, they often have to be pierced or trimmed in one of the last manufacturing steps. With rising production numbers blanking is a potentially more cost efficient technology for trimming and piercing of FRP components compared to the conventionally performed abrasive water jet cutting or machining. The mechanisms of FRP separation in blanking have not yet been researched. In particular, the influence of the fibre orientation relative to the cutting line on the cutting force is not known. In the scope of this work an experimental study of blanking of a unidirectional carbon fibre reinforced plastic with a thermoset resin at different fibre orientations to the cutting line was performed. It was shown that the cutting force decreases from the perpendicular to the parallel fibre orientation to the cutting line. A possible mechanical explanation of this dependency was formulated.