국제강구조저널 (International journal of steel structures)

  • 제18권5호
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  • Pages.1631-1638
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  • 2018
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  • 1598-2351(pISSN)
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  • 2093-6311(eISSN)
한국강구조학회 (Korean Society of Steel Construction)
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Fatigue Resistance Improvement of Welded Joints by Bristle Roll-Brush Grinding

  • Kim, In-Tae (Department of Civil Engineering, Pusan National University) ;
  • Kim, Ho-Seob (Department of Civil Engineering, Pusan National University) ;
  • Dao, Duy Kien (Department of Civil Engineering, Ho Chi Minh City University of Technology and Education) ;
  • Ahn, Jin-Hee (Department of Civil Engineering, Gyeongnam National University of Science and Technology) ;
  • Jeong, Young-Soo (Seismic Simulation Test Center, Pusan National University)
  • 투고 : 2017.01.16
  • 심사 : 2018.04.03
  • 발행 : 2018.12.31
⟨ 이전 논문 다음 논문 ⟩

초록

In the periodic repainting of steel bridges, often the steel surface has to be prepared by using power tools to remove surface contaminants, such as deteriorated paint film and rust, and to increase the adhesive strengths of the paint films to be applied newly. Surface preparation by bristle roll-brush grinding, which is a type of power tool, may additionally introduce compressive residual stress and increase the fatigue resistance of welded joints owing to the impact of rotating bristle tips. In this study, fatigue tests were conducted for longitudinally out-of-plane gusset fillet welded joints and transversely butt-welded joints to evaluate the effect of bristle roll-brush grinding prior to repainting on the fatigue resistance of the welded joints. The test results showed that bristle roll-brush grinding introduced compressive residual stress and significantly increased fatigue limits by over 50%.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)

참고문헌

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피인용 문헌

  1. Influence of surface quality on residual stress of API 5L X80 steel submitted to static load and its prediction by artificial neural networks vol.108, pp.11, 2018, https://doi.org/10.1007/s00170-020-05621-2
  2. Experimental characterization and fatigue behavior of thermally and mechanically treated 316L stainless steel MIG-welded joints vol.65, pp.1, 2021, https://doi.org/10.1007/s40194-020-00997-x
  3. Numerical and Experimental Research on the Brushing Aluminium Alloy Mechanism Using an Abrasive Filament Brush vol.14, pp.21, 2018, https://doi.org/10.3390/ma14216647
  4. Brush grinding aluminum alloy mechanism of single steel wire based on finite element approach vol.13, pp.12, 2018, https://doi.org/10.1177/16878140211067137