Effect of the direction of LOP on the conductivity of LY12 aluminum alloy

摘要：

　　The defect of lack of penetration in Friction stir welding is the most common defect in thebottom of the weld.The properties of tension and fatigue are reduced,due to the characteristics of close,complex orientation and so on.The eddy current testing is used in this experiment,which has high sensitivity to the defect of surface and near surface.The Eddy Current Conductivity testing instrument is used to analyze the conductivity distribution on friction stir welding,which is affected by the direction of LOP.The results show that the conductivity distribution is affected by LOPs direction.Due to the strength of eddy current is decreasing exponentially from the surface of testing sample,and the distribution of eddy current is affected strongly by the opening of LOP,and the motion of electron transfer is blocked strongly by LOP,the location of the lowest conductivity to LOP of different direction is in the opening of LOP on each weld.With the decreasing of direction angle α2,the location of the lowest conductivity to LOP of different direction is deviating from the weld center gradually.

关键词： LOP eddy current conductivity direction

作者: Zhang Xiaofan Li Lifu

作者单位: South China University of Technology,Guangzhou 510640 China

会议类型: 国际会议

会议名称: The Fifth International Symposium on Test Automation & Instrumentation(2014第五届国际测试自动化与仪器仪表学术会议)

会议地点: 北京

会议语种:英文

页码: 169-173

在线出版日期: 2014-09-23（万方平台首次上网日期，不代表论文的发表时间）