Experimental Analysis on Fatigue Life Assessment of Dissimilar Aluminum Alloys Weld Joints under Four-Point Rotating Bending Condition
Source abstract
Abstract
Industrial applications often require welded joints of dissimilar metals to perform reliably under adverse working conditions. Such conditions demand high resistance to failure modes, such as fatigue, corrosion, and creep. In applications involving intense vibrational and cyclic loading conditions, high strength-to-weight ratio metals, including aluminum, are more vulnerable to fatigue failure. This study investigates the fatigue strength of base metals and tungsten inert gas welded joints of the two most widely used aluminum alloys, AA7075 and AA2024, under four-point rotating bending. For the comparative study, these dissimilar alloys were joined together by using two different filler rods, AA4047 and AA4043, under similar welding conditions. SN curves for all the samples were generated through the experimental iterations. A comparison of different results shows that welded samples have better fatigue strength than the base metals, while, as a filler, AA4047 has better resistance to fatigue fracture than AA4043.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Advanced Welding Techniques Analysis · Mechanical Behavior of Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Mechanical Engineering Department, University of Engineering and Technology, Taxila 47050, Pakistan
School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea
Mechanical Engineering Department, Indian Institute of Technology (IIT) Madras, Chennai 600036, India
Department of Mechanical Engineering Technology, Government College University Faisalabad (GCUF), Faisalabad 38000, Pakistan
Funding
National Research Foundation of Korea
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