Journal of Welding and Joining

  • 제29권2호
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  • Pages.46-55
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  • 2011
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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변동하중하의 잔류응력을 고려한 십자형 용접부의 잔존 수명 예측에 관한 연구

Fatigue Crack Propagation Life Assessment of T-joint Fillet Weldment Considering Residual Stress under Random Loading

  • 김성훈 (인하대학교 대학원 조선해양공학과) ;
  • 김경수 (인하대학교 기계공학부 조선해양공학과) ;
  • 이장현 (인하대학교 기계공학부 조선해양공학과) ;
  • 유창혁 (인하대학교 대학원 조선해양공학과) ;
  • 유원효 (인하대학교 대학원 조선해양공학과) ;
  • 유미지 (인하대학교 대학원 조선해양공학과)
  • Kim, Sung-Hoon (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha Univ.) ;
  • Kim, Kyung-Su (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Lee, Jang-Hyun (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Yoo, Chang-Hyuk (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha Univ.) ;
  • You, Won-Hyo (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha Univ.) ;
  • Yoo, Mi-Ji (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha Univ.)
  • 투고 : 2010.05.17
  • 심사 : 2011.01.10
  • 발행 : 2011.04.30
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초록

This paper deals with the crack propagation life assessment of T-joint welded structure where typical fatigue cracks have been frequently initiated when the marine vessels experience the storm load. Welding residual stresses are calculated to investigate its effects on the fatigue life. Thereafter the residual stress distribution was applied to the AFGROW life prediction program, which incorporated the loading, the welding residual stress, and the geometric shape of the structure. The fatigue tests of the T-joint welded specimen under storm loading show the beach mark clearly generated on the fractured section of the weldment. The crack propagation life estimated based on the beach mark is compared with that of AFGROW to validate the life prediction. Based on the results, the evaluation method of the remaining fatigue life for T-joint fillet weldment of marine vessel's cargo hold with random load or storm load was established.

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참고문헌

  1. Yoo Cheol Jeon, Yoo Il Kim, Joong Gyou Kang and Jong Man Han : A Study on Fatigue Life Prediction of Welded joints Through Fatigue Test and Crack Propagation Analysis, Journal of the Society of Naval Architects of Korea, 38-3 (2001), 93-106 (in Korean)
  2. Kyung Su Kim, Ki Seong Kim, Chun Sik Shim and Hyoung Min Cho : A Study on Evaluation of Overload Effects on Fatigue Crack Growth, Key Engineering Materials, 261-263 (2004), 1169-1178 https://doi.org/10.4028/www.scientific.net/KEM.261-263.1169
  3. Y. Tomita, M. Matoba and H. Kawabe : Fatigue crack growth behavior under random loading model simulating real encountered wave condition, Marine Structures, 8-4 (1995), 407-422 https://doi.org/10.1016/0951-8339(94)00028-Q
  4. Mi Ji Yoo, Jang Hyun Lee, Se Yun Hwang, Kyoung Su Kim and Sung Chan Kim : A Study of Predicting 3-dimensional Welding Residual Stress Distribution for T-joint Fillet Specimen, Journal of KWJS, 28-2 (2010), 84-90 (in Korean)
  5. Yoo Seok Song, K. Hashimoto, Kyung Su Kim, Hyun Tae Jeon, H. Ito, Yong Suk Suh, Beom Seon Jang, Yong Shim : An experimental study on fatigue crack initiation and propagation under storm loading, PRADS2010-2151
  6. Fatigue Design of Offshore Steel Structures, Recommended Practice, RP-C203, Det Norske Veritas (DNV), 2008
  7. K. Matsuoka : An evaluation method on fatigue crack initiation life at welded joints in steel structures, T. of SNAJ, 178 (1995), 513-522
  8. J.A. Harter : AFGROW User Guide and Technical Manual. AFRL-VA-TR-2006-XXXX, Air Force Research Laboratory, 2006
  9. R. W. Landgraf, J. Morrow, and T. Endo : Determination of the Cyclic Stress-Strain Curve, J. Mater., 4-1 (1969), 176-188
  10. M. Kikukawa, M. Jono and Y. Kondo : Fatigue crack closure and estimation method of crack propagation rate under stationary varying loading conditions including random loading (2nd report, extension of the method to high propagation rate regime, Japan Society of Mechanical Engineers, 49-439A (1983), 278-285 (in Japanese) https://doi.org/10.1299/kikaia.49.278
  11. Kyung Su Kim, Chun Sik Shim, Young Bin Kwon, Hee Seung Ko, Hyeok Geun Ki and K.K. Viswanathan : A study of Crack Propagation and Fatigue Life Prediction on Welded Joints of Ship Structure ( II ), Journal of the Society of Naval Architects of Korea, 45-6 (2008), 679-687 (in Korean) https://doi.org/10.3744/SNAK.2008.45.6.679
  12. P.C. Paris and F. Erdogan : A Critical Analysis of Crack Propagation Laws, Trans. ASME, J.Basic Eng, D85 (1963), 528-534

피인용 문헌

  1. An Experimental Study on Fatigue Life Evaluation of Welded Joints under Storm Loading vol.49, pp.1, 2012, https://doi.org/10.3744/SNAK.2012.49.1.99