Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
권호 표지

S-N Fatigue Strength of Small Diameter Branch Welded Pipe with Variation of Welding Shapes and Welding Procedures

용접부의 형상과 공정변화에 따른 소구경 분기배관의 피로강도 특성평가

  • 백종현 (한국가스공사 연구개발원 배관연구센터) ;
  • 김우식 (한국가스공사 연구개발원 배관연구센터)
  • Published : 2004.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

S-N fatigue tests were conducted to investigate the fatigue strength of small diameter socket and butt welded joints made of carbon steels. Experimental parameters were pipe diameter, throat depth, shape of socket welds and welding procedure. Filler metals used in SMAW and GTAW procedure were E9016-G with diameter of 4.0 m and ER70S-G with diameter of 2.4 m. API 5L Gr.B pipes were adopted as a small diameter branch pipes. All socket fittings were machined from ASTM A105 carbon steel. Tensile strength was not affected by the welding procedure. Fatigue strength in socket weld joints increased with increasing pipe diameter, area of weld metal and weld leg length of pipe side.

Keywords

References

  1. J. of pressure Vessel Technology v.120 Experimental Study on Fatigue Strength of Small-diameter Socket-welded Pipe Joints M.Higuchi;A.Nakagawa;K.Iida;M.Hayashi;T.Yamaguchi;M.Saito;M.Sato https://doi.org/10.1115/1.2842233
  2. Pressure Vessel and Piping Codes and Standards v.360 Vibration Fatigue Testing of Socket Welds P.C.Riccardella;S.H.Pan;M.Sullivan;J.Schletz;S.R.Gosselin
  3. J. of pressure Vessel Technology v.119 Effect of Residual Stress on Fatigue Strength of Small-diameter Welded Pipe Join T.Yamashita;T.Hattori;K.Iida;M.Hayashi;T.Nomoto;M.Sato https://doi.org/10.1115/1.2842326
  4. Welding in the World v.41 Fatigue failures of small diameter pipe welds in PWR plant Y.Taujikura
  5. Nuclea Engineering and Design v.166 Study on crack generation at root of socket welds K.Iida;F.Matsuda;M.Sato;M.Nayama;N.Akitomo https://doi.org/10.1016/0029-5493(96)01241-1
  6. ASME B31.8 Gas Transmission and Distribution Piping Systems
  7. ASME B31.3 Chemical Plant and Petroleum Refineary Piping
  8. BSI 2633 Class I Arc Welding of Ferritic Steel Pipework for Carrying Fluids
  9. CAS Z662 Oil and Gas Pipeline Systems
  10. Journal of KWS v.18 no.1 Ultimate and Fatigue Strength of Ship Hopper Knuckles Y.H.Kim;J.Y.Chung;J.K.Paik;H.S.Kim;D.H.Kim
  11. Journal of KWS v.16 no.5 A Study on Bending Fatigue Strength of One Side Fillet Welded T-Joint by SM 490A Steel D.S.Um;S.W.Kang;T.H.Lee;H.W.Lee;S.H.Choi