ステイツチ繊維を用いたガラス繊維強化プラスチックの引張および圧縮特性

摘要

Glass Fiber Reinforced Plastics (GFRP) have been applied to products such as building components and various structural materials in industrial plants due to their excellent lightness and corrosion resistance, as well as weather resistance since the 1980's. Use of GFRP for large-scaled components and/or components with repetitive load has increasingly widespread in recent years, and both tensile and compressive properties have thus become important. Reinforcing laminate for GFRP has been mainly woven fabric such as glass woven roving due to its easy handling. However, its fiber winding and gap occurrence have been problems to be solved. In the recent years, new fiber fabrics for reinforcement have come on the market owing to rapid development of weaving machine, and one of the new fabrics is the stitched fabric. This glass fiber stitched fabric has been increasingly developed in Europe and all over the world for over ten years, and in Japan, has extended its application for ship for about ten years. This study investigates and examines GFRP reinforced with unidirectional glass fiber stitched fabric, in respects of the effect of fiber laminated constitution, fiber content and fiber diameter on tensile and compressive properties. Additionally, this study also examines relevance between weaving patter of fiber and strength property by comparing 0 degree/ 90 degree stitched fabric with GFRP with general woven roving.%ガラス繊維強化プラスチック（GFRP：Glass FiberrnReinforced Plastics）は　近年，大型部材や繰り返しrnの荷重が負荷される構造部材への適用が増加している．rnこれに伴い材料特性として，引張強さと同時に優れた圧rn縮強さ機械められるようになってきた．rnGFRPの一般的な強化基材としては，これまでは取り扱rnい性と入手性の観点から，例えばガラスロービングクロrnスに代表されるクロス織物基材が主に使用されてきた．