云南农业大学学报2013，Vol.28Issue(2)：264-269,6.DOI:10.3969/j.issn.1004-390X(n).2013.02.021
焊接接头缺陷尺寸概率分布模型研究
Research on Statistical Distribution of Defect Size in Weld Joints
张永华 1张天会 1顾丽春 1陈运春 1李华英 1闫沛军1
作者信息
摘要
Abstract
Statistical distribution research on welding defect size in weld joints was investigated based on engineering physics background of welding defect occurring and mathematics statistics. The research showed that the frequency of defects occurring obeyed Poisson process and that the ratio of defect occurring was invariable in a certain weld metal area. The study on the frequency of defects occurring and the ratio of defect occurring showed that welding defect size obeyed index distribution. By means of parameters estimation and mathematics statistics on ADB610 steel penstock in water conservancy and hydropower engineering, it was found that index distribution was the best one for welding defects size. It can be concluded that welding defect size obeys index distribution from both study on engineering physics background and study by means of mathematics statistics method. So it is put forward that index distribution is the real statistical distribution for welding defect size in weld joints.关键词
焊接接头/缺陷尺寸/概率分布/指数分布Key words
welding joints/ defect size/ reliability distribution/ index distribution分类
矿业与冶金引用本文复制引用
张永华,张天会,顾丽春,陈运春,李华英,闫沛军..焊接接头缺陷尺寸概率分布模型研究[J].云南农业大学学报,2013,28(2):264-269,6.
