Fatigue life prediction of gas metal arc welded crucifrom joints of AA7075 aluminium alloy failing from root region

作     者：B. RAVINDRA T. SENTHIL KUMAR V. BALASUBRAMANIAN 

作者机构：Department of Mechanical Engineering Dr. Ambedkar Institute of Technology Near Jnana Bharathi Campus Department of Mechanical Engineering Anna University-Tiruchirappalli Centre for Materials Joining & Research (CEMAJOR) Department of Manufacturing Engineering Annamalai University 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2011年第21卷第6期

页      面：1210-1217页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：aluminium alloy gas metal arc welding cruciform joint fatigue life 

摘      要：Empirical relationship was developed to predict the fatigue life of gas metal arc welded （GMAW） cruciform joints failing from root region. High strength, age hardenable aluminium alloy of AA7075-T6 grade was used as the base material. The design of experiments concept was used to optimize the required number of fatigue testing experiments. Fatigue experiment was conducted in a servo hydraulic controlled fatigue testing machine under constant amplitude loading. The empirical relationship was developed. By using the developed empirical relationship, the fatigue life of GMAW cruciform joints failing from root region was predicted at 95% confidence level. The effect of cruciform joint dimensions on fatigue life was discussed in detail.