複数の破壊原因が共存する単繊維の欠陥寸法分布関数の導出と炭素繊維への応用

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  • Derivation of the Defect Size Distribution Function of the Monofilament in Case of the Coexistence of Several Types of Fracture Origins and an Application to Carbon Fibers
  • フクスウ ノ ハカイ ゲンイン ガ キョウゾンスル タンセンイ ノ ケッカン

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The defect size distribution of the monofilament in which several types of defects coexist, was theoretically derived using the competing risk theory and the fracture location theory. The defect size distribution indicated a similar form of the multimodal Weibull distribution. This was because the defect size had the one-to-one correspondence to the fracture stress. To apply this theory in practice, we conducted tensile tests of PAN-based carbon fibers. Observed defect sizes of PAN-based carbon fibers coincided with the theoretical distribution as a first approximation.

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