2013 Fiscal Year Final Research Report
Experimental and Numerical Study on the Unstable ModeII Crack Growth with Image Analysis
| Project/Area Number |
22560489
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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 |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Kinki University |
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Principal Investigator |
OKINAKA Tomoo 近畿大学, 理工学部, 准教授 (90298985)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEHARA Kousei 近畿大学, 理工学部, 教授 (50216933)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 画像計測 / 光弾性実験 / 超高速ビデオカメラ |
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| Research Abstract |
To study the unstable crack growth mechanism under compressive loading, the experiment of two dimensional crack growth under uni-axial compression, the experiment and numerical simulation of three dimensional inner crack growth has been performed. Image analysis with ultra-high-speed camera is applied to the two dimensional unstable crack growth under quasi-static uniaxial compression. Stress field around the moving crack tip is visualized by means of photo-elastic technique and images of growing cracks and the stress field are captured with the frame rate of 250,000 fps. As a result, it is revealed that the crack growth is affected by the stress wave travelling the specimen. Image analysis with ultra-high speed camera is also applied to the three dimensional inner crack growth, and the growth is visualized successfully. Numerical analysis with PDS-FEM technique is applied to the three dimensional inner crack growth, and the result shows a good agreement with the experimental result.
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Research Products
(3 results)
