高速度撮影による一方向CFRPの破壊観察

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タイトル別名
  • The Fracture Observation of a Unidirectional CFRP by High Speed Imaging
  • コウソクド サツエイ ニ ヨル 1ホウコウ CFRP ノ ハカイ カンサツ

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The objective of this study is to clarify the fracture behaviour of unidirectional CFRP (carbon fiber reinforced plastics) under static tensile loading. The advantages of CFRP are higher specific stiffness and strength than the metals. The use of CFRP is increasing in not only the aerospace and rapid transit railway industries but also the sports, leisure and automotive industries. There are some proposed theories to find out the tensile fracture of CFRP by using numerical calculation. But the tensile fracture mechanism of unidirectional CFRP has not been experimentally made clear because the fracture speed of unidirectional CFRP is quite high. We selected the intermediate modulus and high strength unidirectional CFRP laminate which is a typical material used in the aerospace field. The fracture process under static tensile loading was captured by high-speed camera and a new type high-speed video camera HPV-1. We succeeded in high-speed imaging of this fracture by HPV-1 at 125,000 frames per second. We clarified a high-speed fracture process by tensile test of CFRP.

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