複合材料の圧縮成形過程における材料流れに関する基礎的研究(<小特集>強化プラスチックス小特集)

概要

論文の詳細を見る
he molding of composite materials using BMC and SMC contributes greatly to mass production technology. However, the products made by this molding process have some problems. For example, in the case of a product with rib part, a hollow occasionally appears at the opposite surface of the rib. Furthermore, the strength of rib is reduced at the resin rich corner of rib. In order to solve these problems, it is necessary to investigate the flow state of BMC during the molding process by experimental and numerical analyses. In this paper, the dependence of flow state of BMC on the length of fiber involved was investigated. The experiments were carried out at room temperature so as to avoid the effect of polymerization. In the numerical analysis, a model consisting of isotropic laminae between each prepressed BMC laminates was used to simulate slippage in the specimen. The experimental and analytical results showed that the resin rich part at the corner of rib became larger as the fibers in BMC became shorter. The higher the height of rib, the larger the distortion of flow pattern and the variation of the strength of this part.
社団法人日本材料学会の論文
1982-12-15