%0 Journal Article
%T MULTIAXIAL CREEP-FATIGUE LIFE EVALUATION UNDER PROPORTIONAL LOADING
%A YNoguchi
%A MMiyahara
%A <br>Y.Noguchi
%A M.Miyahara
%J 金属学报(英文版)
%D 2004
%I 
%X A new method was proposed for the multiaxial creep-fatigue life evaluation under proportional loadings. Because this method was derived from the strain range partitioning method with a multiaxiality factor, it was possible to consider the influence of both creep-fatigue interaction and multiaxial stress state on fatigue life. In order to predict the combined axial-torsional fatigue life the damage under combined loading was defined as linear summation of the damages under axial loading and torsional loading. Axial-torsional creep-fatigue tests were carried out using tubular specimens of 316LC austenitic stainless steel and the ferritic rotor steel. This rotor steel was developed for the permanent magnet type eddy current retarder in heavy trucks. Experimentally obtained lives of both steels were well corresponded with the lives predicted by the proposed method. It was found that the proposed method was effective in multiaxial fatigue life evaluation under proportional creep-fatigue loadings.
%K multiaxial fatigue
%K creep-fatigue
%K proportional loading
%K life evaluation<br>结构钢
%K 蠕变
%K 疲劳
%K 比例加载
%K 寿命评估
%K 多轴疲劳试验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=FA58F71709D1E5C9F7AA58C4A8B7239E&yid=D0E58B75BFD8E51C&vid=BCA2697F357F2001&iid=E158A972A605785F&sid=26AEEED215BE97D0&eid=5DCBAAB000A70168&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=6