The fatigue crack problems that broke out at the end of the twentieth century were fatigue crack properties in hull structures. This motivated research on a lot of technologies against fatigue fracture. It was clarified that the detection of fatigue crack initiation in complex welded structures like hulls is quite difficult, and that the crack length at recognition is mostly long compared to mechanical parts. From these research results, not only stress reduction at critical areas by improvement in design but also newly developed materials with excellent resistance to fatigue crack growth has been desirable for structural integrity. The newly developed structural steel, in which fatigue crack growth resistance is controlled by microstructures, will be introduced in this report. Various fatigue properties of the base steel plates in air and in synthetic sea water are compared. And the fatigue life extension effects by FCA is observed in fatigue tests of welded joints and welded structural models.
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ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering
June 8–13, 2003
Cancun, Mexico
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-3683-5
PROCEEDINGS PAPER
Development of Structural Steel With Superior Resistance Against Fatigue Crack Growth
Noboru Konda,
Noboru Konda
Sumitomo Metals Industries, Ltd., Amagasaki, Japan
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Kazushige Arimochi,
Kazushige Arimochi
Sumitomo Metals Industries, Ltd., Amagasaki, Japan
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Kazuhiro Hirota,
Kazuhiro Hirota
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
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Eiichi Watanabe,
Eiichi Watanabe
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
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Masuo Tada,
Masuo Tada
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
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Hiroshige Kitada,
Hiroshige Kitada
Nippon Keiji Kyokai, Tokyo, Japan
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Tsutomu Fukui,
Tsutomu Fukui
Nippon Keiji Kyokai, Tokyo, Japan
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Motomichi Yamamoto,
Motomichi Yamamoto
Hiroshima University, Higashi-Hiroshima, Japan
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Yunbo Kho,
Yunbo Kho
Nagasaki Institute of Applied Science, Nagasaki, Japan
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Hiroshi Yajima
Hiroshi Yajima
Nagasaki Institute of Applied Science, Nagasaki, Japan
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Noboru Konda
Sumitomo Metals Industries, Ltd., Amagasaki, Japan
Kazushige Arimochi
Sumitomo Metals Industries, Ltd., Amagasaki, Japan
Kazuhiro Hirota
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
Eiichi Watanabe
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
Masuo Tada
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
Hiroshige Kitada
Nippon Keiji Kyokai, Tokyo, Japan
Tsutomu Fukui
Nippon Keiji Kyokai, Tokyo, Japan
Motomichi Yamamoto
Hiroshima University, Higashi-Hiroshima, Japan
Yunbo Kho
Nagasaki Institute of Applied Science, Nagasaki, Japan
Hiroshi Yajima
Nagasaki Institute of Applied Science, Nagasaki, Japan
Paper No:
OMAE2003-37080, pp. 35-44; 10 pages
Published Online:
January 23, 2009
Citation
Konda, N, Arimochi, K, Hirota, K, Watanabe, E, Tada, M, Kitada, H, Fukui, T, Yamamoto, M, Kho, Y, & Yajima, H. "Development of Structural Steel With Superior Resistance Against Fatigue Crack Growth." Proceedings of the ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops. Cancun, Mexico. June 8–13, 2003. pp. 35-44. ASME. https://doi.org/10.1115/OMAE2003-37080
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