| 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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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 高温強度 / クリープ疲労強度 / 応力集中 / き裂発生 / き裂進展 / 破壊力学 / Ｊ積分 / 非弾性有限要素法 / J積分 / 円孔板のモデル化 |
|---|
| 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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