Effect of welding environment on fatigue crack growth rate of aluminium alloy 1100

Aluminium is a light metal that is widely used in industry because it has good machinability, good corrosion resistance has good machinability, good corrosion resistance, and high ductility. In its application to the vehicle structure, the welding process requires a connection process. However, aluminium welding has several problems because aluminium has high thermal conductivity, a large coefficient of expansion, specific gravity and a low melting point. So, this study aims to determine the difference in fatigue crack growth rate of welded joints from different welding environmental conditions such as air humidity and air temperature.