RELATIONSHIP BETWEEN J-INTEGRAL AND FRACTURE SURFACE AVERAGE PROFILE
来源期刊：Acta Metallurgica Sinica2007年第1期
论文作者：K.Tanaka S.F. Xue Y.G. Cao
Key words：FRASTA (fracture-surface topography analysis); J-integral; fracture surface;
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.
K.Tanaka1，S.F. Xue2，Y.G. Cao2
(1.Department of Mechanical Systems Engineering, Toyama Prefectural University, Toyama 939-0398, Japan;
2.Department of Engineering Mechanics, College of Architecture and Transport and Storage Engineering, China University of Petroleum, Dongying 257061, China)
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.
Key words:FRASTA (fracture-surface topography analysis); J-integral; fracture surface;
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