2012 Fiscal Year Final Research Report
DEVELOPMENT OF LIFE PREDICTION OF CREEP-FATIGUE STRENGTH OF TUBE SHEET IN STREAM GENERATOR OF FAST BREEDER REACTOR
| Project/Area Number |
22560071
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | University of Tsukuba |
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Principal Investigator |
WATANABE Osamu 筑波大学, システム情報系, 教授 (80111368)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUDA Akihiro 筑波大学, システム情報系, 講師 (20371437)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 高温強度 / クリープ疲労強度 / 応力集中 |
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| Research Abstract |
Operating temperature of fast breeder reactor is 550 degree Centigrade, so that the evaluation for creep-fatigue strength is indispensable from the viewpoint of structural integrity. The structures having circular holes are seen in ,for instance , supporting circular plate or tube sheet. In plate having circular holes, crack initiates at hole sides, so that the accurate evaluation of creep-fatigue strength is necessary in such structures. Plate made of SUS 304 stainless steel with one circular hole is machined, and fatigue and creep-fatigue tests were conducted at 550 degree centigrade to observe initiation and propagation.
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