The Study of Relationships between Fractal Dimension and a Crack Profile in Two Types of CT Specimen

机译：两种CT试样的分形维数与裂纹轮廓关系的研究

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The application of a fractal concept provides anrnuseful method in the study for the quantitativernanalysis of highly irregular fracture surfaces andrncrack profiles. We obtained the fractal dimension ofrnfracture crack profiles for STS316 CT specimens ofrntwo types as the crack advances and estimated thernrelationship between a fractal extension crack lengthrnand a fractal dimension. A fractal crack length canrnbe given by a modification of the equation ofrnRichardson. From the results, we concluded that therncrack profile of two types both specimens shows thernfractal characteristics, which can be used in order tornevaluate more precise prediction of a crack life. Andrnwe show that the fractal dimension in a non-siderngroove specimen is larger than that of the specimenrnwith side-groove.

机译：分形概念的应用为研究高度不规则的裂缝表面和裂缝轮廓的定量分析提供了一种有用的方法。随着裂纹的发展，我们获得了两种类型的STS316 CT试样的断裂形貌的分形维数，并估计了分形扩展裂纹长度和分形维数之间的关系。分形裂纹的长度可以通过对理查森方程的修改得到。从结果可以得出结论，两种类型的两个样品的裂隙轮廓均显示出裂变分形特征，可用于评估更精确的裂纹寿命预测。 Andrnwe表明，非侧面沟槽试样的分形维数大于带有侧面沟槽试样的分形维数。

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来源
《Asian Pacific conference for fracture and strength'99 (APCFS'99)》|1999年|p.1-6|共6页
会议地点 Xian(CN);Xian(CN)
作者
Oh-Heon Kwon; Yutaka Sato; Katsuhiko Watanabe;
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作者单位

Department of Safety Engineering, Pukyong University, San 100, Yongdang-Dong, Nam-Ku, Pusan, 608-739 Korea;

rnInstitute of Industrial Science, University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106 Japan;

rnInstitute of Industrial Science, University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106 Japan;

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原文格式 PDF
正文语种 eng
中图分类机械制造用材料;
关键词
fractal dimension; crack profile; box countingrnmethod; fracture surface; fractal characteristic; rncrack life;

机译：分形维数;裂纹轮廓;盒计数法;断裂面;分形特征;裂纹寿命;

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The Study of Relationships between Fractal Dimension and a Crack Profile in Two Types of CT Specimen

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