The objective of this thesis is to investigate the influence of welding residual stresses on the fatigue growth behavior of cracks located transverse to the weld bead. For this purpose, G.T.A. (Gas Tungsten Arc) welding was performed on the AI. Alloy ...
The objective of this thesis is to investigate the influence of welding residual stresses on the fatigue growth behavior of cracks located transverse to the weld bead. For this purpose, G.T.A. (Gas Tungsten Arc) welding was performed on the AI. Alloy 1100-O plate and the same initial crack is made on HAZ(Heat Affected Zone), weld metal and base metal respectively.
C.T.(Compact Tension) specimens were used as experimental material. Initial welding residual stresses were measured by using strain gage sectioning method. All specimens were tested under constant amplitude load with stress ratio R=0.1.