首页 | 本学科首页   官方微博 | 高级检索  
     


An experimental investigation of fatigue behavior and deformation of double spot friction welded joints
Affiliation:1. Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran;2. Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran;3. School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran;1. DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy;2. Chemistry Dept., University of Torino, Via Pietro Giuria 7, Torino 10125, Italy;3. Laboratoire de Technologie des Composites et Polymères (LTC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;4. Nanoscience and Materials, INRIM, Strada delle Cacce 91, Torino 10138, Italy;1. Department of Mechanical Engineering, College of Engineering, Kyung Hee University, Yongin 446-701, Republic of Korea;2. Department of Chemistry, Inha University, Incheon 22212, Republic of Korea;1. Department of Physics, Razi University, Kermanshah, Iran;2. Department of Physics, University of Colorado, Colorado Springs, CO 80918, USA;1. School of Electronic and Information Engineering, Southwest Petroleum University, Chengdu 610500, China;2. PetroChina Sichuan Petrochemical Co., Ltd., Nanchong 637000, China
Abstract:Fatigue behavior of double spot friction welded joints in aluminum alloy 7075-T6 plates is investigated by conducting monotonic tensile and fatigue tests. The spot friction welding procedures are carried out by a milling machine with a designed fixture at the best preliminary welding parameter set. The fatigue tests are performed in a constant amplitude load control servo-hydraulic fatigue testing machine with a load ratio of (R = Pmin/Pmax) 0.1 at room temperature. It is observed that the failure mode in cyclic loading (low-cycle and high-cycle) resembles that of the quasi-static loading conditions i.e. pure shearing. Primary fatigue crack is initiated in the vicinity of the original notch tip and then propagated along the circumference of the weld’s nugget.
Keywords:Double spot friction welding  Fatigue life  Fracture
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号