Crack Size Tolerance of Under-matched Joints of Hull Steel with Different Weld Toughness
In order to investigate the safety performance of welding structure of 10CrNi3MoV hull steel,with the application of FAD method provided by SINTAP,this paper made safety assessment for 2 joints with the same yield stress under-matching ratio but different weld toughness.Based on tensile test and CTOD test results,assessment was carried out.Several different sizes (2a) of weld central crack were given.Then the crack size tolerance for each joint can be found.Through relative analysis,a few conclusions were gained.As long as the assessment level is selected,FAD shape changed little.Weld toughness influenced weakly on a joints resistance to plastic instability,but significantly on its anti-brittle capacity.The higher weld toughness is,the more likely assessment point located within failure assessment curve,i.e.the safety performance is correspondingly better.
crack size tolerance SINTAP under-matched joint toughness safety assessment
Ji Sun Chibin Gui Wenjun Chen
College of Naval Architecture and Power Engineering, Naval University of Engineering, Wuhan 430033, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuha
国际会议
厦门
英文
341-344
2012-01-04（万方平台首次上网日期，不代表论文的发表时间）