221 円孔を有する組物複合材料の力学的挙動(I) : 微視的損傷進展挙動(OS 高分子および高分子複合材料)

概要

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The characteristic of long fiber-reinforced plastic as unidirectional reinforced material are high elasticity and strength in the direction of fiber orientation. However, when the composite materials are used as structural members, connecting them with other members is one of the important problems. Mechanically fastened joints connecting each member by pins or bolts have been well known as one of the simplest joint methods. In this case, when a hole is produced by machining after fabrication of the composite material, decrease of the strength is expected by reason of cutting the fiber around the hole. In this study, the influence of a circular hole on the mechanical properties of a flat braided composite was investigated. Two types of specimens were prepared; a flat braided bar with a braided hole which fiber bundle continuously oriented around the hole and with a machined hole. Moreover, whitening propagation process and the micro damage were observed by optical microscope.
一般社団法人日本機械学会の論文
2000-11-24