Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Highly Pressurized Hydrogen Gas on Tensile Properties of a Low-Alloy Steel Used for Manufacturing CNG Storage Vessels

CNG 저장용기용 저합금강의 인장 특성에 미치는 고압 수소가스의 영향

  • Lee, H.M. (Center for Materials Measurement, Korea Research Institute of Standards and Science) ;
  • Jeong, I.H. (Center for Materials Measurement, Korea Research Institute of Standards and Science) ;
  • Park, J.S. (Center for Materials Measurement, Korea Research Institute of Standards and Science) ;
  • Nahm, S.H. (Center for Materials Measurement, Korea Research Institute of Standards and Science) ;
  • Han, J.O. (R&D Division, Korea Gas Corporation) ;
  • Lee, Y.C. (R&D Division, Korea Gas Corporation)
  • 이해무 (한국표준과학연구원 재료측정표준센터) ;
  • 정인현 (한국표준과학연구원 재료측정표준센터) ;
  • 박종서 (한국표준과학연구원 재료측정표준센터) ;
  • 남승훈 (한국표준과학연구원 재료측정표준센터) ;
  • 한정옥 (한국가스공사 연구개발원) ;
  • 이영철 (한국가스공사 연구개발원)
  • Received : 2010.12.24
  • Accepted : 2012.05.21
  • Published : 2012.08.01

Abstract

SNG (synthetic natural gas or substitute natural gas) could contribute greatly toward energy security. In addition, HCNG (or $H_2CNG$) is expected to be used as a fuel gas for internal combustion engines and home appliances because it has extremely low emissions and high thermal efficiency. However, the hydrogen contained in SNG or HCNG can deteriorate the mechanical properties of the materials used in existing natural gas infrastructure. Therefore, it is necessary to investigate the effect of hydrogen on the mechanical properties of such materials so that SNG or HCNG can be transported and distributed safely and reliably. In this study, the effect of highly pressurized hydrogen gas on the tensile properties of a low-alloy steel used for manufacturing CNG storage vessels was investigated using the so-called hollow tensile specimen technique.

Keywords

Hydrogen;CNG;Tensile Testing;Low Alloy Steel;Storage Vessel;Hollow Specimen

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Acknowledgement

Grant : 수소의 전환/저장/이용을 위한 안전 측정기술 개발

Supported by : 한국표준과학연구원

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