Healing of fatigue damage by metallic atom rearrangement and recombination through high-density electron collisions
| Project/Area Number |
23686021
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Nagoya University |
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Principal Investigator |
HOSOI ATSUSHI 名古屋大学, 工学(系)研究科(研究院), 助教 (60424800)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥25,220,000 (Direct Cost: ¥19,400,000、Indirect Cost: ¥5,820,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2011: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
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| Keywords | 疲労 / 損傷治癒 / 転位 / 高密度電流 / き裂 / 進展 |
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| Research Abstract |
A technique to heal fatigue crack was developed to prevent accidents due to aging of structures and improve their fatigue life. As the results, the closure of the fatigue crack and the bonding between the crack surfaces were realized by applying high-density electric current. Decreasing the crack growth rate temporarily was also succeeded. In addition, the delay of fatigue crack initiation was realized due to the decrease of dislocation density. It was found that the technique with the electrical stimulation has the potential to heal a fatigue crack and to restore fatigue damage.
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Report
(4 results)
Research Products
(29 results)
