1987 Fiscal Year Final Research Report Summary
Development of Corrosion Fatigue Testing System in Marine Environment for WELded Structural Components and Establishment of Design Standard for Corrosion Fatigue
| Project/Area Number |
61850134
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
溶接工学
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| Research Institution | The University of Tokushima,Faculty of Engineering |
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Principal Investigator |
AKIZONO Kocihi The University of Tokushima,Faculty of Engineering, 工学部, 教授 (90035577)
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| Co-Investigator(Kenkyū-buntansha) |
池田 猛 (株)日進機械, 技術部, 部長
田中 輝彦 (株)鷺宮製作所, 副工場長
上田 和男 徳島県商工労働部(前徳島県工業試験場), 課長補佐
MURAKAMI Ri-ichi The University of Tokushima, Faculty of Engineering, 工学部, 助教授 (00112235)
TANAKA Teruhiko Saginomiya Co.Ltd.
IKEDA Takeshi Nisshin Machine Co.Ltd.
UEDA Kazuo Tokushima Prefectural Industtial Research Institute
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| Project Period (FY) |
1986 – 1987
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| Keywords | Elded joint / fractography / DC potential drop mesurement method / residual stress corrosion fatigue / computor control system / 海洋環境 / 疲労試験機 / 60キロ級商張力鋼 |
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| Research Abstract |
In the present study, a corrosion fatigue crack propagation testing under tghe marine environment was carried out for butt welded joints of HT60 steel in order to establish the design standard for corrosion fa- tigue. The fatigue crack propagation rate of base metal in air showed scarecely the depandence on stress ratio. Hile the corrosion fatigue crack propagation rate in marine environment depended remarkably on the stress ratio. The corrosion fatigue crak propagation rate was smaller for welded joint than for base metal, and decreased with decreasing the stress ratio. Such crrosion fatigue behavior resulted from the welding residual stress and the wedging effect bu calcareous deposits.
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Research Products
(2 results)
