Departmental Bulletin Paper 曲げ荷重を受けるCFRP板材への鋼球衝突損傷

川尻, 剛大

57pp.1 - 8 , 2016-03-24 , 法政大学大学院理工学・工学研究科
Carbon Fiber Reinforced Plastics (CFRP) is one of composite materials. CFRP is superior in the specific strength and rigidity, which is useful in the fields required to reduce the weight of products. However, CFRP have the problem causing delamination between layers by the impact. Invisible delaminates may cause a great accident. In this study, a relationship between impact energy and delamination area of CFRP laminates was investigated. The impact tests that detect the effect of bending load and high temperatures on the layer delamination area of CFRP laminate are made using an air-gun system and incubator. Scanning Acoustic Microscopy (SAM) is utilized for detecting the delamination area of CFRP laminates. The residual strength of the specimen being damaged is also examined by using three point bending device. In convex transformation, the strength decrease was suppressed by delamination area is reduce at 7/8 layers. In concave transformation, the strength decrease was increased by fiber break in 8 layer. Key Words : CFRP laminates, Delamination area, Bending load, High temperature, SAM

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