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Dynamic Ductile Fracture Analysis of Natural Gas Pipelines on the Basis of Material Grade and Charpy V-Notch Impact Energy

가스배관의 재질등급 및 충격에너지에 따른 연속연성파괴 거동분석

  • Jeong, Hyo-Tae (Department of Metal & Materials Engineering, Kangnung National University) ;
  • Choe, Byung-Hak (Department of Metal & Materials Engineering, Kangnung National University) ;
  • Lee, Young-Jin (Department of Metal & Materials Engineering, Kangnung National University) ;
  • Lee, Jeong-Hwa (Department of Metal & Materials Engineering, Kangnung National University) ;
  • Hong, Key-Yong (Ocean Plant Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science & Technology) ;
  • Baek, Jong-Hyeon (Korea Gas R&D Division) ;
  • Kim, Woo-Sik (Korea Gas R&D Division)
  • 정효태 (강릉원주대학교 신소재금속과) ;
  • 최병학 (강릉원주대학교 신소재금속과) ;
  • 이영진 (강릉원주대학교 신소재금속과) ;
  • 이정화 (강릉원주대학교 신소재금속과) ;
  • 홍기용 (한국해양과학기술원 선박해양플랜트연구소 해양플랜트연구부) ;
  • 백종현 (한국가스공사 연구개발원) ;
  • 김우식 (한국가스공사 연구개발원)
  • Received : 2012.07.19
  • Accepted : 2012.10.20
  • Published : 2012.10.31

Abstract

To analyze the macroscopic fracture behavior as functions of the gas pipeline grade and the working environment, following analyses have been accomplished. Computer analysis of changes in fracture behaviors according to the working conditions of pipelines and Analysis of dynamic ductile fracture behaviors using the Battelle Two Curve Method. Recently, an economic and reliable pipe materials with improved performance has been needed for the severe pipeline working condition and new transporting materials. As the grade of pipe materials became higher, the possibility of dynamic ductile fracture could be increased. Therefore, the understanding of the technology to control and arrest the dynamic ductile fracture is important.

가스배관 종류 및 사용 환경에 따른 거시적 파괴거동 평가해석을 위하여 1) 가스배관의 특성 및 환경에 따른 파괴거동 변화의 컴퓨터해석과 2) Battelle Two-Curve Method를 이용한 연속연성파괴거동 평가해석을 수행하였다. 새로운 사용환경의 가스와 오일의 배관계획이 진행되면서, 개선된 성능, 신뢰성, 그리고 경제성을 위한 재료가 요구되고 있다. 여기서 제시되는 연속연성파괴 해석은 높은 배관압력, 큰 배관직경과 같은 배관 특성의 변화와 천연가스와 같이 다양한 성분을 함유하는 가스, 수소가스, 액화 이산화탄소 등과 같이 다양한 수송매체의 변화를 수용하기 위한 배관시스템에서 고려하여야 할 중요한 기술요소이다.

Keywords

References

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