%0 Journal Article
%T FRACTAL ANALYSIS OF FRACTURE SURFACE OF WELDING JOINT UNDER LOW CYCLE FATIGUE<br>焊接接头材料低周疲劳断口的分形分析
%A NI Yushan
%A CHENG Guangxu
%A KUANG Zhenbang
%A <br>倪玉山
%A 程光旭
%A 匡震邦
%J 金属学报
%D 1992
%I 
%X Hausdorff dimension of fracture surface roughness of welding joint, both weld metal and heat-affected zone, of pressure vessel steel 16MnR, tested under strain-controlled low-cycle fatigue, was examined with computer vision system and by two-dimensional variation method. Results show that it decreases with the increase of cyclic hysteresis energy. The Hausdorff dimension variation at heat-affected zone is higher than that of weld metal. It is believed that the higher the fractal dimension is, the longer the fatigue life will be.
%K welding joint
%K low-cycle fatigue
%K fractograph
%K Hausdorff dimension<br>焊接接头
%K 低周疲劳断口
%K 分形分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=4CFC28EA12D8C266C32B81612BB95650&yid=F53A2717BDB04D52&vid=D3E34374A0D77D7F&iid=708DD6B15D2464E8&sid=9971A5E270697F23&eid=7C3A4C1EE6A45749&journal_id=0412-1961&journal_name=金属学报&referenced_num=3&reference_num=7