%0 Journal Article
%T Near Threshold Fatigue Crack Propagation Under Combined Torsion And Tension In Stainless Steel<br>不锈钢在扭转/拉伸复合载荷下近门槛值的疲劳裂纹扩展行为
%A HuiChen Yu
%A <br>于慧臣
%A 孙燕国
%A 张岩基
%A 谢世殊
%A 田中启介
%J 金属学报
%D 2006
%I 
%X Near-threshold fatigue crack propagation tests were conducted under combined torsion and tension on a circumferentially pre-cracked round bar of an austenite stainless steel. The propagation behavior was studied extensively under various combinations of cyclic loads. The threshold condition of fatigue crack extension was expressed by a quarter-elliptic function in terms of the stress intensity factor ranges for mode I and III. The equation can be derived on the basis of the crack-tip displacement criterion. The threshold condition for fracture is also expressed by another quarter-elliptic function.
%K combined torsion and tension
%K fatigue crack propagation
%K sliding contact
%K stress intensity factor(SIF)
%K threshold<br>扭转/拉伸复合加载
%K 疲劳裂纹扩展
%K 滑移接触
%K 应力强度因子
%K 门槛值
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=BF71B8B271D5DFFF&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=0B39A22176CE99FB&sid=50BBDFAC8381694B&eid=6235172E4DDBA109&journal_id=0412-1961&journal_name=金属学报&referenced_num=8&reference_num=13