Al₂O₃-에폭시 복합재료의 크랙성장에 의한 파괴 = Fracture of Al₂O₃-epoxy composites by crack growth

다국어 초록 (Multilingual Abstract)

Al₂O₃-filled epoxy resin composites system was studied with the linear elastic fracture mechanics and its mechanical properties. The effect of the Al₂O₃partical volume fraction(Vp)were also studied.
The Young's modulus increased significantly with Vp, it shows empirical equation, Ec=Em(1-Vp_-2 56. The yield stress also increased with Vp, however, plastic flow appeared before fracture for low value of Vp and un-filled epoxy resin matrix.
Between crack velocity of 10-5 and 10-1m/sec, the crack propagation occured in continuous and stable manner, so the stress intensity factor and crack opening displacement reached maximum values for Vp of 0.14/0.21.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험
• 1. 시료
• 2. 모울드의 제작
• 3. 복합재료의 조성 및 성형
• 4. 시편의 Cutting, Notching 및 Grooving
• 5. Three point bend 시험
• 6. Uniaxial compression시험
• 7. Double torsion 시험
• Ⅲ. 결과 및 고찰
• 1. Young's modulus
• 2. Stress-strain의 향상
• 3. 크랙속도-Stress intensity factor
• 4. 파괴역학
• Ⅳ. 결론
• Ⅴ. 참고문헌