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针对金属断口纵剖面线（Profile）分形图的RSC特性，应用S600数字图像处理系统对其微分曲线进行了研究，提出了Profile的P谱模型与有关特征参数，用以全面描述Pro-file的分形特性，并应用于球墨铸铁断口Profile分形的统计分析和断裂机制研究中。
According to the RSC characteristic of profile fractal image of metal fracture, this paper studied its differential curve by using S600 digital image processing system, and proposed Profile P spectrum model and related characteristic parameters to fully describe the fractal of Pro-file Characteristics, and applied to the statistical analysis of fractal profile of ductile iron fracture and fracture mechanism.