Damage Behavior of Hemp Fiber Reinforced Poly(L-Lactic Acid) Composites under Fatigue Loading

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概要

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• Green composites, such as natural fiber reinforced naturally-derived plastics attract much attention because of reducing CO<SUB>2</SUB> emission. Many studies about green composites have enabled the materials substitutes as glass fiber reinforced composites. However, lack of investigations about fatigue properties restricts the actual usage of the composites. In the present study, we investigate fatigue properties of green composites. A hemp fiber yarn reinforced poly(lactic acid) composite was selected as a green composite. Unidirectional (UD) and textile (Textile) composites were fabricated using micro-braiding technique. Fatigue tests results indicated that fatigue damages in UD composites was splitting which occurred just before the final fracture, while matrix crack and debonding between matrix and fiber yarn occurred and accumulated stably in Textile composites. These results were consistent with modulus reduction and acoustic emission measurement during fatigue tests.

著者

• KOBAYASHI Satoshi

  Graduate School of Science and Engineering, Tokyo Metropolitan University

• Kobayashi Satoshi

  Graduate School Of Engineering Tokyo Metropolitan University

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