磨粒分形识别及发展

Fractal Identification of Wear Particles and Its Development

相互作用表面间必然会产生磨粒 ,磨粒含有大量的有关材料摩擦磨损的信息。磨粒形态分析是确定磨损方式和磨损程度的有益手段。磨粒并非是欧氏几何体 ,而是展示出了分形性质。基于分形几何理论 ,可获得尺度不变的分形参数 ,用这类参数可对磨粒形态进行客观、全面的表征。本文综合评述了磨粒分形表征以及磨粒形态特征与磨损方式、磨损程度间的定量耦合关系等的研究进展 。

Wear particles are produced whenever moving surfaces interact Wear particles contains extensive information about wear and friction of materials The analysis of wear particle morphology is useful as a means of determining the modes and extent of the wear taking place Wear particles are not Euclidean, instead they exhibit a fractal nature Based on fractal geometry, scale invariant fractal parameters can be obtained which can provide objective and full characterization of wear particle morphology A review of recent advances and developments in the fractal characterization of wear particles, and the quantitative studies of the relationship between the wear particle morphological features and the types and extent of the wear occurring are presented Then the trend and the issues for attention in studying wear particles based on fractal geometry in the future are discussed