Development of predictive maintenance scheme for fatigue cracks based on dissipated energy measurement
| Project/Area Number |
26289009
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial 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 | Kobe University |
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Principal Investigator |
Sakagami Takahide 神戸大学, 工学(系)研究科(研究院), 教授 (50192589)
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| Co-Investigator(Kenkyū-buntansha) |
久保 司郎 摂南大学, 理工学部, 教授 (20107139)
塩澤 大輝 神戸大学, 工学(系)研究科(研究院), 准教授 (60379336)
和泉 遊以 滋賀県立大学, 工学部, 助教 (60610954)
中井 善一 神戸大学, 工学(系)研究科(研究院), 教授 (90155656)
祖山 均 東北大学, 工学(系)研究科(研究院), 教授 (90211995)
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| Research Collaborator |
YUDATE Yukihiko DIC株式会社
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Keywords | 機械材料・材料力学 / 熱弾性応力計測 / 散逸エネルギ / 疲労き裂 / 非破壊評価 / 破壊力学 / 赤外線計測 / 疲労 / 赤外線カメラ |
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| Outline of Final Research Achievements |
Development of the predictive maintenance scheme was investigated for structural integrity assessment, in which fatigue crack initiation and propagation in the structural members were evaluated from in-situ measurement results of the actually applied stress distribution and the dissipated energy emission. Scientific interpretation of the prediction of fatigue crack initiation and the estimation of fatigue limit was studied by investigating the mechanism of energy dissipation during fatigue damage evolution process. Further the thermoelastic stress analyses was applied for on-site measurement of stress distributions around fatigue cracks, and the future crack propagation behavior was estimated by the fracture mechanics approach. The technique was applied to estimate fatigue crack propagation rate and to evaluate the effectiveness of repair or reinforcement for defective portions in steel structures.
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Report
(4 results)
Research Products
(100 results)
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[Presentation] アクティブ赤外線法による構造物の非破壊検査2016
Author(s)
竹内優人, 阪上隆英, 和泉遊以, 藤本泰成, 花井 拓, 溝上善昭, 森山 彰
Organizer
日本機械学会 関西学生会平成27年度学生員卒業研究発表講演会
Place of Presentation
大阪電気通信大学（大阪府・寝屋川市）
Year and Date
2016-03-10
Related Report
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[Presentation] 熱弾性応力測定法による鋼構造溶接部の疲労き裂評価2016
Author(s)
東 智之, 藤本泰成, 阪上隆英, 溝上善昭, 和泉遊以, 藤城忠朗, 花井 拓, 森山 彰
Organizer
日本機械学会 関西学生会平成27年度学生員卒業研究発表講演会
Place of Presentation
大阪電気通信大学（大阪府・寝屋川市）
Year and Date
2016-03-10
Related Report
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[Presentation] 高分子系複合材料における散逸エネルギ計測2016
Author(s)
中村 優, 玉城宇達, 塩澤大輝, 阪上隆英, 澤田栄嗣, 野中眞一, 濱田健一
Organizer
日本機械学会 関西学生会平成27年度学生員卒業研究発表講演会
Place of Presentation
大阪電気通信大学（大阪府・寝屋川市）
Year and Date
2016-03-10
Related Report
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