Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Damage Visualization of Filament Wound Composite Hydrogen Fuel Tank Using Ultrasonic Propagation Imager

초음파전파영상화 시스템을 이용한 필라멘트 와인딩 복합재 수소 연료 탱크의 손상 가시화

  • Lee, Jung-Ryul (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Jeong, Hyomi (Department of Aerospace Engineering and the Engineering Institute-Korea, Chonbuk National University) ;
  • Chung, Truong Thanh (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Shin, Hejin (Department of Aerospace Engineering and the Engineering Institute-Korea, Chonbuk National University) ;
  • Park, Jaeyoon (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2015.06.29
  • Accepted : 2015.08.28
  • Published : 2015.08.31
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Abstract

This paper proposes laser ultrasonic technique for the impact damage inspection of hydrogen fuel tank and proves that the impact damage can be visualized using an ultrasonic wave propagation imager with an easy detachable sensor head as an impact damage inspection tool for hydrogen fuel tanks. Also the performances of the proposed ultrasonic propagation imager support it can be implemented in real-world technology when the hydrogen car becomes popular.

알루미늄 혹은 플라스틱 라이너에 탄소섬유를 감아서 성형하는 복합재 압력용기가 수소 자동차의 수소연료 탱크로 사용이 확대됨에 따라 사용 시 안전에 대한 규정 제정이 필요하며 그 규정을 뒷바침 할 수 있는 검사장비와 기술 역시 개발되어야 한다. 자동차에 장착하기 전에 제작결함 평가를 통해 수소 자동차에 장착되어야 하고, 취급 중 발생하는 이벤트에 대해서도 고속 자동화 검사를 통해 자동차 정비소의 정비인력, 즉 비파괴평가 전문가가 별도의 교육을 받지 않았어도 즉시 충격과 같은 손상을 평가할 수 있어야 한다. 위 요소는 수소자동차의 대중화를 위해 매우 중요한 기술적 허들이다. 본 연구에서는 수소연료탱크의 충격손상을 검사하는 방법으로 레이저 초음파 기술을 제안하며 충격손상을 탈 부착형 센서헤드를 가진 초음파전파영상화 시스템으로 가시화할 수 있음을 증명한다. 또한 제안한 초음파전파영상화 시스템의 성능은 수소자동차가 대중화되더라도 현장기술로 채택될 수 있음을 뒷받침한다.

Keywords

References

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