| RELATIONSHIP BETWEEN J-INTEGRAL AND FRACTURE SURFACE AVERAGE PROFILE |
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| 作者姓名： | Y.G. Cao S.F. Xue K. Tanaka |
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| 作者单位： | [1]Department of Engineering Mechanics, College of Architecture and Transport and Storage Engineering, China University of Petroleum, Dongying 257061, China [2]Department of Mechanical Systems Engineering, Toyama Prefectural University, Toyama 939-0398, Japan |
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| 摘 要： | To investigate the causes that led to the formation of cracks in materials, a novel method that only considered the fracture surfaces for determining the fracture toughness parameters of J-integral for plain strain was proposed The principle of the fracture-surface topography analysis （FRASTA） was used. In FRASTA, the fracture surfaces were scanned by laser microscope and the elevation data was recorded for analysis. The relationship between J-integral and fracture surface average profile for plain strain was deduced. It was also verified that the J-integral determined by the novel method and by the compliance method matches each other well.
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| 关 键 词： | 铸造工艺 表面裂纹 板型 完整度 |
| 收稿时间： | 2006-05-24 |
| 修稿时间： | 2006-09-19 |
RELATIONSHIP BETWEEN J-INTEGRAL AND FRACTURE SURFACE AVERAGE PROFILE |
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| Y.G. Cao S.F. Xue K. Tanaka.RELATIONSHIP BETWEEN J-INTEGRAL AND FRACTURE SURFACE AVERAGE PROFILE[J].Acta Metallurgica Sinica(English Letters),2007,20(1):40-48. |
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| Authors: | YG Cao SF Xue KTanaka |
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| Affiliation: | 1. Department of Engineering Mechanics, College of Architecture and Transport and Storage Engineering, China University of Petroleum, Dongying 257061, China
2. Department of Mechanical Systems Engineering, Toyama Prefectural University, Toyama 939-0398, Japan |
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| Abstract: | To investigate the causes that led to the formation of cracks in materials, a novel method that only considered the fracture surfaces for determining the fracture toughness parameters of J-integral for plain strain was proposed. The principle of the fracture-surface topography analysis (FRASTA) was used. In FRASTA, the fracture surfaces were scanned by laser microscope and the elevation data was recorded for analysis. The relationship between J-integral and fracture surface average profile for plain strain was deduced. It was also verified that the J-integral determined by the novel method and by the compliance method matches each other well. |
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| Keywords: | FRASTA (fracture-surface topography analysis) J-integral fracture surface PROFILE AVERAGE SURFACE FRACTURE compliance relationship surfaces average profile laser microscope elevation data used FRASTA principle topography analysis novel method |
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