해수흡수된 두께가 두꺼운 카본/에폭시 복합재의 정수압 증가에 따른 파괴인성에 대한 실험적 연구
An Experimental Study on the Fracture Toughness of Seawater-absorbed Thick Carbon/epoxy Composite in the Hydrostatic Pressure Environment
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초록
해저환경에서 PMC(고분자기지 복합재)는 금속재 구조물에 비해 부식성이 우수한 것으로 알려져 있다. 해저환경에서 고분자기지 복합재의 파괴특성에 대한 이해는 증가하는 해저구조물 제조에 반드시 필요하다. 본 연구에서, 파괴시험은 해수흡수 된 카본/에폭시 복합재에 대해 정수압을 네단계(0.1 MPa, 100 MPa, 200 MPa, and 270 MPa)로 증가시켜 수행하였다. 파괴인성은 정수압에서의 일인자방법을 적용하였다. 파괴거동은 모든 정수압에서 선형적이었고 파괴인성은 정수압이 증가할수록 증가하였다.
Abstract
It is well-known that the corrosive behavior of PMC (polymer matrix composite) structure is much better than the metal structure in the marine environment. The understanding of fracture behavior of PMC in the deep-sea environment is essential to expand itsuse in the marine industry. For a present study, fracture tests have been performed under four different pressure levels such as 0.1 MPa, 100 MPa, 200 MPa, and 270 MPa using the seawater-absorbed carbon/epoxy composite samples. Fracture toughness was determined from the work factor approach as a function of hydrostatic pressure. It was found that fracture behavior was a linear elastic for all pressure levels. The fracture toughness increased with increasing pressure.
참고문헌 (14)
- "Effect of fiber orientation and moisture absorption on the interlaminar fracture toughness of CFRP laminates", 7, pp.377~394 (1998)
- "In-situ observation in SEM of degradation of graphite", epoxy composite materials due to seawater immersion, 1995, pp.29, 852~867
- "Effects of seawater immersion on the impact resistance of glass fiber reinforced epoxy composites", pp.2118~2133 (1992)
- "Effects of moisture content on nonlinear deformation behavior of CF", epoxy composites, 1997, 530~551
- "The effect of hydrostatic pressure on the tensile properties of pultruded CFRP", pp.2141~2147 (1981)
- "Hydrostatic pressure effect on the fracture toughness of unidirectional (0-deg) graphite", epoxy laminated composites, 2000, pp.34, 599~613
- "A study on the compressive behavior of multi-directional graphite", epoxy composites under hydrostatic pressure, 1999, pp.23, 1373~1379
- "Effect of hydrostatic pressure on the mechanical behavior of seawater-absorbed carbon", epoxy composite, 2004, pp.384, 308~313
- "Effect of hydrostatic pressure on the elastic work factor, hel and fracture toughness determination of unidirectional composites using hel", 349, pp.218~223 (2003)
- "Some further results of J-integral analysis and estimates", pp.231~235 (1973)
- "Effects of hydrostatic pressure on the torsional shear behavior of graphite", epoxy composites, 1992, 462~485
- "The effect of seawater exposure on mode I interlaminar fracture and crack growth in graphite", epoxy, 1992, 2655~2673
- "Moisture absorption of graphite", polymer composites under 2000 feet of seawater, 1988, pp.23, 787~797
- "Compressive failure and kinking in the uniaxially allighned glass-resin composite under superimposed uydrostatic pressure", pp.3656~3662 (1982)