Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)
- Volume 22 Issue 2
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- Pages.416-427
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- 1998
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
Fabrication of unidirectional commingled-yarn-based carbon fiber/polyamide 6 composite plates and their bend fracture performances
일방향 혼합방사형 탄소섬유/폴리아미드 6 복합재료판의 제작조건과 굽힘파괴거동
- Choi, Nak-Sam (Dept. of Mechanical Engineering, Hanyang University)
- 최낙삼 (한양대학교 기계공학과)
- Published : 1998.02.01
Abstract
Unidirectional commingled-yarn-based carbon fiber(CF)/polyamide(PA) 6 composite was fabricated under molding pressures of 0.4, 0.6 and 1.0 MPa to study its flexural deformation and fracture behavior. Fiber/matrix interfacial bonding area became larger with an increase of molding pressure from 0.4 to 0.6 MPa. For molding pressures .geq. 0.6 MPa, good flexural performance of similar magnitudes was attained. For the fracture test, four kinds of notch direction were adopted : edgewise notches parallel (L) and transverse (T) to the major direction of fiber bundles, and flatwise notches parallel(ZL) and perpendicular(ZT) to this direction. Nominal bend strength for L and ZL specimens exhibited high sensitivity to notching. ZL specimens revealed the lowest values of the critical stress intensity factor
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