Development of Fabrication Technique for 3-D Structure Consisting of Short Fibers Utilizing Compression Molding for Fiber Reinforced MMCs

本课题通过压缩长纤维和金属颗粒的混合物，开发了一种由短纤维聚集体组成的具有三维结构的MMC预制体的新工艺。纤维聚集体与Al颗粒的混合物经过压缩后，出现了许多短纤维。当Al颗粒的加入量或混合料的压缩变形量改变时，纤维长度的分布也会发生变化。从而指出了获得所需纤维长度的实验条件。此外，采用上述预制体的frmmc显示了应用预制体的三维结构所期望的力学性能。

In this project, a new fabrication technique for the MMC preform having 3-D structure consisting of short fiber aggregates by compressing the mixture of long fibers and metal particles was developed. Many short fibers were observed in the mixture of fiber aggregates and Al particles after compressing the mixture. When the amount of Al particles or compressive deformation of the mixture was changed, the distribution of fiber length was also changed. Thus, the experimental conditions to obtain the desired fiber length were indicated. In addition, the FRMMCs which employed the preform above mentioned showed the mechanical properties expected from the 3-D structure of the applied preform.