Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Evaluation of thermal shock resistance and thermal shock fracture toughness using $CO_2$ laser for ATJ graphite

ATJ 그라파이트의 $CO_2$ 레이저를 이용한 열충격 강도 및 열충격 파괴인성 평가

  • Kim, Jae-Hoon (Department of Mechanical Design Engineering, Chungnam National University) ;
  • Lee, Young-Sin (Department of Mechanical Design Engineering, Chungnam National University) ;
  • Park, No-Seok (Graduate School, Chungnam National University) ;
  • Kim, Duk-Hoi (Graduate School, Chungnam National University) ;
  • Han, Young-Wook (Graduate School, Chungnam National University) ;
  • Seo, Jung (Laser Application group, Korea Institute of Machinery & Materials) ;
  • Kim, Jung-Oh (Laser Application group, Korea Institute of Machinery & Materials)
  • 김재훈 (충남대학교 기계설계공학과) ;
  • 이영신 (충남대학교 기계설계공학과) ;
  • 박노석 (충남대학교 대학원) ;
  • 김덕회 (충남대학교 대학원) ;
  • 한영욱 (충남대학교 대학원) ;
  • 서정 (한국기계연구원 레이저응용시스템그룹) ;
  • 김정오 (한국기계연구원 레이저응용시스템그룹)
  • Published : 2003.04.01
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Abstract

The purpose of this study is to evaluate thermal shock resistance and thermal shock fracture toughness for ATJ graphite. Thermal shock resistance and thermal shock fracture toughness of ATJ graphite are evaluated by using CO$_2$ laser irradiation technique. The laser heat source is irradiated at the center of specimens. Temperature distribution on the specimen surface is measured using the thermocouples of type K and C. SEM and radiographic images are used to observe the cracks which are formed at the thermal shock specimens.

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