한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제22권2호
  • /
  • Pages.50-57
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  • 2008
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  • 1225-0767(pISSN)
  • /
  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

용접구조물의 부식피로수명에 미치는 용접부 개선처리 효과

Effect of Weld Improvement on the Corroded Fatigue Life of Welded Structures

  • 임성우 (포항산업과학연구원 강구조연구소) ;
  • 장인화 (포항산업과학연구원 강구조연구소) ;
  • 김상식 (경상대학교 나노신소재공학부) ;
  • 송하철 (국립목포대학교 기계선박해양공학부)
  • 발행 : 2008.04.28
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초록

The effect of weld improvement on the corroded fatigue life of welded structures was investigated. Toe grinding, TIG dressing and weld profiling were used as the geometric improvement methods. Fatigue tests under the corroded condition in artificial seawater were carried out to investigate the corrosion fatigue behavior of API 2W Gr.50T steel plate produced by POSCO. The test results in weld improved conditions were compared with those in as-welded condition. The test results were also compared with the design curves in UK DEn Class F. Corroded fatigue life of weld improved specimens was longer than that of as-welded specimen. Especially, the corroded fatigue life exceeded the mean SN curve in air of UK DEn Class F.

키워드

참고문헌

  1. ASM Handoook (1997), Vol 13, Corrosion, pp 905
  2. Hara, M. Kawai, Y. Narumoto, A. and Matsumoto, S. (1986). 'Corrosion Fatigue Strength of 490 MPa Class High-Strength Steels Produced by the Thermo-Mechanical Control Process', OTC 5311, pp 179-185
  3. Kim, W.B. Paik, J.K. Iwata, M. and Yajima, H. (2006). 'Fatigue Strength Evaluation of Rusting Decayed Hull Steel Plate in Air and in Artificial Seawater Condition', Journal of the Society of Naval Architects of Korea, Vol 43, No 4, pp 467-475 https://doi.org/10.3744/SNAK.2006.43.4.467
  4. Kirhope, K.J. Bell, R. Caron, L. Basu, R.I. and Ma, K.T. (1999). 'Weld Detail Fatigue Life Improvement Techniques', Marine Structure, pp 447-474 https://doi.org/10.1016/S0951-8339(99)00013-1
  5. Kobatyashi, Y. Tanaka, Y. Goto, H. Matsuoka K. and Motohashi, Y. (1998). 'Corrosion Fatigue Strength of a Butt Welded Joint of a Ship Structural Steel in Synthetic Seawater', Journal of Japan Welding Society, Vol 16, No 3, pp 382-387 https://doi.org/10.2207/qjjws.16.382
  6. Larrabee, C.P. (1962). 'Steel Has Low Corrosion Rate During Long Sea Water Exposure', Materials Protection, NACE, pp 95-96
  7. Murphy, D.S.R. Gandhi, P. and Raghava, G. (1997). 'Corrosion Fatigue Life of Cathodically Protected Tubular Joints of Offshore Structures', Proceedings of International Conference on Corrosion CONCORN, pp 390-397
  8. Park, Y.K. Kim, H.S. Shin, S.B. and Kim, K.K. (2006). 'A Study on the Fatigue Characteristics at the Weldment by Spot Heating', Proceedings of the 16th International Offshore and Polar Engineering Conference, pp 106-111
  9. Ummenhofer, T. and Weich, I.C. (2007). 'Concepts for Fatigue Design of Welds Improved by High Frequency Peening Methods', Proceedings of the 17th International Offshore and Polar Engineering Conference, pp 356-362
  10. Yajima, H. Hirata, T. Inoue, K. Kawahara, M. Katsuta, J. Fujimoto, Y. Iwata, M. and Nagai, K. (1985). 'Fatigue Strength in Seawater of High Heat-Input Welded Joints for TMCP Type $50kgf/mm^{2}$-Class High Tensile Steel Plates', West Naval Architects, pp 233-241