Study on the Mechanism of Spark Emissions Observed in Fatigue of Zr-based Bulk Amorphous Alloy in Air
| Project/Area Number |
22560090
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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 | Tokyo University of Science |
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Principal Investigator |
NAKASONE Yuji 東京理科大学, 工学部第一部機械工学科, 教授 (10266918)
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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 |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 疲労 / アモルファス / バルクアモルファス / 金属ガラス / 発光 / き裂進展 / せん断試験 / デジタル画像相関法 / シェアリップ |
|---|
| Research Abstract |
The present study investigates the mechanism of spark emissions from crack peripheries observed during the fatigue fracture process of a bulk amorphous alloy Zr55Al10Ni5Cu30. Shear tests of the alloy were performed by using the double-edge-cracked plate specimens at room temperature in air. The loading rate of the shear tests was 15kN/s. The digital image correlation (DIC) method was used to measure deformation around the crack tips in the shear test specimens. The shear tests showed that specimens were fractured along highly strained areas and spark emissions were observed along such fracture paths. The results alsorevealed that spark emissions may have been induced by friction between mating fracture surfaces, especially shear lip regions.
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Report
(4 results)
Research Products
(46 results)
