FRACTURE TEST OF ?43 SOLDER NOTCHED BARS AT LOW TEMPERATURE

摘要：

Fracture tests at low temperature (-47—43℃) were performed on 20 notched bars fabricated from ?43 solder. The effect of notch radius,r,and notch depth,d/D,on fracture mode of ?43 solder was studied. The experimental results demonstrate that cracks initiate at the center of notch section and the notched bars fracture at the notch section at low temperature. The fracture mode is cleavage fracture and the fracture sections are coarse. Specimens with a sharper notch radius (a smaller r) and a larger notch depth (a smaller d/D ratio) show poor ductility. The stressstrain curve of ?43 solder tested on standard specimen at low temperature (-47—43℃) exhibits the character of yielding,hardening and necking. The ratio of ultimate strength to yield strength,σu/σy,and the ductility,δ5,at low temperature meet with the requirement in plastic design for structural steel.

关键词： Solder Notched bars Low temperature Fracture Test

作者: Wan-Zhen Wang Ji-Xiang Xu Xin-Tang Wang Xu-Chang Hao

作者单位: Faculty of Architectural,Civil Engineering and Environment,Ningbo University,Ningbo 315211,P. R. Chi School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 20024 Faculty of Architectural,Civil Engineering and Environment,Ningbo University,Ningbo 315211,P. R.Chin School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730055,P. R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 291-295

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）