한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제21권6호
  • /
  • Pages.50-59
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  • 2022
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  • 1598-6721(pISSN)
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  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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기저부 경사각과 깊이가 에너지 제어형 용착 공정으로 보수된 영역의 열 및 잔류응력 특성에 미치는 영향 고찰

A Study on the Influence of the Inclined Angle and Depth of the Substrate on Thermal and Residual Stress Characteristics in the Vicinity of the Repaired Region by a Directed Energy Deposition Process

  • 김단아 (조선대학교 기계공학과) ;
  • 이광규 (조선대학교 기계공학과) ;
  • 안동규 (조선대학교 기계공학과)
  • Kim, Dan-A (School of Mechanical Engineering, Chosun UNIV.) ;
  • Lee, Kwang-Kyu (School of Mechanical Engineering, Chosun UNIV.) ;
  • Ahn, Dong-Gyu (School of Mechanical Engineering, Chosun UNIV.)
  • 투고 : 2022.03.10
  • 심사 : 2022.04.28
  • 발행 : 2022.06.30
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초록

The design of the substrate significantly affects the thermal history and the residual stress formation in the vicinity of a repaired region by a directed energy deposition (DED) process. The occurrence of defects in the repaired region depends on the thermal history and residual stress formation. The objective of this study was to investigate the influence of the inclined angle and depth of the substrate on the thermal and residual stress characteristics in the vicinity of a repaired region by a DED process through two-dimensional finite element analyses (FEAs). The temperature and residual stress distributions in the vicinity of the repaired region were predicted according to the combination of the inclined angle and depth of the substrate. The effects of the inclined angle and depth on the depth of the heat affected zone and the maximum value of the residual stress were examined. A proper combination of the inclined angle and depth of the substrate was estimated to decrease the residual stress in the vicinity of the repaired region.

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과제정보

이 논문은 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 연구비로 지원된 "국산 CNC 기반 산업기계 재제조 스펙업 및 보급·확산 기반 조성" 사업에 의하여 연구되었음.(No.20206310200010)

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