2016 Fiscal Year Final Research Report
High Efficient Diagnostic System for Evaluation of Residual Life of Elevated Temperature Components Employing SPC and MC Specimens
| Project/Area Number |
26420007
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Chiba University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
TABUCHI Masaaki (独法)物質・材料研究機構, グループリーダー (60354239)
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| Research Collaborator |
FUJIOKA Terutaka
NONAKA Isamu
KOMAZAKI Shinichi
KOYAMA Hideo
NAGAMINE Yosuke
KAWASHIMA Takeshi
TAKEI Sho
ISHIKAWA Shota
AOKI Hidetoshi
FUKUDA Shogo
ITOH Daisuke
KANEKO Ryota
WILSHIRE Brian
STRARFORD Gavin C.
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | クリープ / ミニチュア試験片 / スモール・パンチ試験片 / 余寿命診断 |
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| Outline of Final Research Achievements |
Employing a low alloy steel and a highly-aged boiler tube, small punch creep (SPC) and miniature creep (MC) tests were performed in different atmospheres. Their valuable creep properties, e.g., deformation and rupture lives, were obtained, and then following results were revealed.
1. Miniature uniaxial plate specimen introducing an electric beam welding is developed. Their creep rupture lives were almost the same as those performed using conventional uniaxial creep specimens.2. Employing two types of time-temperature-parameter methods and MC test results, residual lives of aged boiler tubes used for 60k and 230k hours were estimated, and it was verified that both of them had a good safety margin.
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| Free Research Field |
材料力学
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