Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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A Study on the Applications of the ACM(Area Capacity Method) for the Carbon-Fiber Composit Cylinder according to the Flaw Depth

복합재 용기의 손상에 따른 ACM기법 적용 연구

  • Jang, Kap Man (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Yim, Sang Sik (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Young Gyu (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Jeong Hwan (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
  • 장갑만 (한국가스안전공사 한국가스안전연구원) ;
  • 임상식 (한국가스안전공사 한국가스안전연구원) ;
  • 김영규 (한국가스안전공사 한국가스안전연구원) ;
  • 김정환 (한국가스안전공사 한국가스안전연구원)
  • Received : 2019.07.16
  • Accepted : 2019.10.23
  • Published : 2019.10.31
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Abstract

Although the rupture pressure is evaluated from remaining strength when a flaw is defected to cylinder surface, but the rupture pressure can be not easy to estimate for the composite cylinders. In this study, the area capacity method is developed for the type-3 cylinders that is based on the result applied area capacity method of type-1 cylinders. And the reliability is validated by bursting test with artificial flaw at the cylinder surface. The predicted data of area capacity method and experimental results have very similar tendency. This method and results will be a very important records in field of rupture pressure estimations.

호흡용 용기에 흠 등의 결함이 발생하였을 때 용기의 잔존강도를 파악하여 파열압력을 판단해야하지만, 복합재료 용기의 경우 흠에 따른 파열 강도의 예측이 어려우며 기법이 복잡하다. 따라서 본 연구에서는 Type-I 용기의 면적용량법 적용 결과를 토대로 Type-III 용기에 결함발생시 파열을 예측하기 위해 면적 용량법 모델을 개발하였으며, 그 신뢰성을 확인하기 위해 용기의 외면에 흠을 가공하여 파열시험을 실시하였다. 면적 용량법 모델의 예측 결과와 실험의 경향이 매우 일치하는 경향을 보였으며, 향후 복합재 용기의 파열압력 추정 방법에 있어 중요한 자료가 될 것으로 기대한다.

Keywords

References

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