【摘要】 本文应用图像分析技术研究了金属韧性断口轮廓微观几何形态及其描述方法,分析比较了断口轮廓高度统计分布,轮廓均方根偏差,线粗糙度与分形维数等几何特征参量的物理意义。在此基础上分析了韧性断裂机理与断口微观几何形态之间的关系。更多还原

【Abstract】 In order to examine the usefulness of the fracture surface roughness parameters in quantitative fractography, some geometric characteristic parameters, namely profile height distribution, average roughness, root -mean -sqare roughness, lineal roughness parameter and fractal dimension, are developed for quantitative estimation of fracture surface roughness. The correlation between geometic parameter of fracture profile and frature mechanism is discussed.更多还原