天津大学学报（英文版）
天津大學學報（英文版）
천진대학학보（영문판）
TRANSACTIONS OF TIANJIN UNIVERSITY
2014年
6期
435-438
,共4页
柳阳%王东坡%邓彩艳%吴良晨%尹丹青%龚宝明
柳暘%王東坡%鄧綵豔%吳良晨%尹丹青%龔寶明
류양%왕동파%산채염%오량신%윤단청%공보명
fatigue%welded joint%combined cycle fatigue%ultrasonic frequency
A combined cycle fatigue (CCF) testing system with ultrasonic frequency component was developed to evaluate the CCF properties of S350 steel welded joints in this study. The fatigue testing results indicated that the S-N curves of CCF did not have fatigue limit, which agreed with those of pure high frequency fatigue of welded joints. The S-N curves showed that the CCF strength of welded joints dropped greatly with the increasing interaction between high and low frequency fatigue loading. An approximation design method of CCF was presented using amplitude envelope as the stress range.
