Fatigue behaviour of the resistance spot-welded joint of similar and dissimilar metals (stainless steel and titanium)
Year: 2025
Type: dissertation
Abstract: Resistance spot welding (RSW) process is still widely used to weld panels and bodies, particularly in the automotive, railroad, and aerospace industries, despite the prevalence of alternative joining technologies such as laser beam welding and adhesive bonding. The purpose of this research project is to examine how RSW factors such welding current, welding pressure, welding time, holding time, squeezing time, and pulse welding affect the shear strength and hardness of spot-welded metals. Five values will be utilised for each welding parameter. Similar and dissimilar welded joints are going to be made using 0.5 and 1 mm stainless steel (AISI 304) and titanium (grade 2), respectively. The design of experiments (DOE) using Minitab software will be utilised to examine the influence of welding parameters on spot joint shear strength and hardness. The Taguchi design approach may be used to analyse RSW parameters to identify and decrease the number of specimens needed for experiments. This software sets welding conditions for each specimen. The findings are examined to find the best RSW parameters. For the best welded samples, SEM and XRD tests will be employed. After finding the optimal RSW parameters, each welded sample will undergo a fatigue test to determine its fatigue life and failure mechanisms. The RSW numerical model will be created using ANSYS software to examine the influence of certain RSW factors on the temperature distribution.
DOI: 10.35869/11093/9896
Author: Marwan Taher Mezher
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4412840201