摘要
在7075铝合金疲劳实验的基础上获得了断口的SEM扫描图像,展示了数字图像盒维数计算的一般过程,比较了传统计盒维数算法与文中算法的不同之处,计算了断口三个区的分形维数。结果发现7075铝合金疲劳断口有较好的分形特征,文中算法过程更符合工程实际获得的图像,三个区的分形维数大小与各自的纹理特征是一致的。
The SEM images of the fracture surface is got based on the fatigue experiment of 7075 aluminum alloy,and the general process to get the box-dimension calculation is showed.Then the diffference between the traditiona algorithm and new algorithm presented in this paper is compared,and the fractal dimensions of the three areas of the fracture surface are calculated.The results show that fatigue fracture surface has good fractal characteristics,the algorithm in this paper is better than the tradtional algorithm to accord with images got from engineering and the fractal dimension values of the three districts of the fracture surface are consistent with their texture feature.
出处
《机械工程师》
2012年第12期33-35,共3页
Mechanical Engineer
关键词
7075铝合金
断口
数字图像
分形
7075 aluminum alloy
fracture sreface
digital image
fractal
