Browse > Article

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

Im, Sung-Woo (Research Industrial Science and Technology)
Chang, In-Hwa (Research Industrial Science and Technology)
Kim, Sang-Shik (Gyeongsang National University)
Song, Ha-Cheol (Mokpo National University)
Publication Information
Journal of Ocean Engineering and Technology / v.22, no.2, 2008 , pp. 50-57 More about this Journal
Abstract
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.
Keywords
Corroded fatigue life; Weld improvement; Toe grinding; Weld profiling; TIG dressing TIG; API 2W Gr.50T steel plate API 2W Gr.50T;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 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
2 Larrabee, C.P. (1962). 'Steel Has Low Corrosion Rate During Long Sea Water Exposure', Materials Protection, NACE, pp 95-96
3 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
4 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
5 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   과학기술학회마을   DOI
6 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   DOI
7 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
8 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
9 ASM Handoook (1997), Vol 13, Corrosion, pp 905
10 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   DOI   ScienceOn