| 金属断裂表面的三维重建和定量分析 |
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| 引用本文： | 朱平,陈丙森,唐伟.金属断裂表面的三维重建和定量分析[J].中国体视学与图像分析,1997(1). |
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| 作者姓名： | 朱平 陈丙森 唐伟 |
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| 作者单位： | 清华大学机械工程系 |
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| 基金项目： | 国家自然科学基金,金属疲劳与断裂国家重点实验室资助 |
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| 摘 要： | 利用扫描电镜立体对成象技术、图像处理和计算机视觉方法建立了一套金属断裂表面三维形貌的自动重建系统。运用体视学、粗糙度分析及分形几何原理对断口的三维重建结果定义了断面几何形貌量化参量，并用图像分析技术给出了这些参量的计算机辅助测量方法。测量结果表明：断面粗糙度参量Ｒｓ和Ｒｑ与断裂的物理背景显示了良好的关系，而分形维数是一个对断裂模式不敏感参量；断面几何特征具有各向异性，单一方向的二维截面分析难以全面描述复杂的断裂表面。
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| 关 键 词： | 定量断口 三维重建 体视学 粗糙度 分形 立体视觉 |
Three dimensional topography reconstruction and quantitative analysis of metallic fracture surfaces |
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| Zhu Ping,Chen Bingsen,Tang Wei.Three dimensional topography reconstruction and quantitative analysis of metallic fracture surfaces[J].Chinese Journal of Stereology and Image Analysis,1997(1). |
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| Authors: | Zhu Ping Chen Bingsen Tang Wei |
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| Abstract: | An autonomous system for the reconstruction of 3D topography of metallic fracture surfaces was established by means of SEM stereo pairs photography, image processing, and computer vision. The reconstructed surfaces were quantified with stereology, roughness and fractal parameters. A computer assisted programme for measuring these parameters has been completed in image analysis method. It was showed that roughness parameters like Rs and Rq have good relations to the physical background of fracture process, but fractal dimension is insensitive to the fracture mode. The geometric topography of fracture surface was found to be anisotropic, and it will be not adequate to describe the complex fracture surface with only one single cross section. |
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| Keywords: | quantitative fractography 3D reconstruction stereology roughness fractals stereo vision |
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