Numerical investigation of laser beam-welded AA2198 joints under different artificial ageing conditions
Research output: Journal contributions › Conference article in journal › Research
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In: Procedia Structural Integrity, Vol. 42, 01.01.2022, p. 244-250.
Research output: Journal contributions › Conference article in journal › Research
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TY - JOUR
T1 - Numerical investigation of laser beam-welded AA2198 joints under different artificial ageing conditions
AU - Examilioti, Theano
AU - Germanou, Athina
AU - Papanikos, Paraskevas
AU - Kashaev, Nikolai
AU - Klusemann, B.
AU - Alexopoulos, Nikolaos D.
N1 - Conference code: 23
PY - 2022/1/1
Y1 - 2022/1/1
N2 - The present study aims to investigate the effect of weld geometry and geometrical shape imperfections on the mechanical behavior of welded joints under different post-weld heat treatment conditions. Finite element analyses were performed using the local mechanical properties of laser beam welded AA2198 joints obtained from micro-flat tensile test specimens. The finite element results show that, for the as-welded condition show that the maximum strain was observed in the lower region of the fusion zone, independently the geometrical imperfections. By applying post weld heat treatment, the maximum strain concentration can now be noticed in the upper region of the fusion zone for all the ageing times due to the lower local elongation at fracture values.
AB - The present study aims to investigate the effect of weld geometry and geometrical shape imperfections on the mechanical behavior of welded joints under different post-weld heat treatment conditions. Finite element analyses were performed using the local mechanical properties of laser beam welded AA2198 joints obtained from micro-flat tensile test specimens. The finite element results show that, for the as-welded condition show that the maximum strain was observed in the lower region of the fusion zone, independently the geometrical imperfections. By applying post weld heat treatment, the maximum strain concentration can now be noticed in the upper region of the fusion zone for all the ageing times due to the lower local elongation at fracture values.
KW - Al-Li alloy
KW - laser beam-welding
KW - local mechanical properties
KW - finite element model
KW - Engineering
UR - https://www.mendeley.com/catalogue/86e6f6e3-8a79-3753-8be8-20666570da77/
UR - http://www.scopus.com/inward/record.url?scp=85158961499&partnerID=8YFLogxK
U2 - 10.1016/j.prostr.2022.12.030
DO - 10.1016/j.prostr.2022.12.030
M3 - Conference article in journal
VL - 42
SP - 244
EP - 250
JO - Procedia Structural Integrity
JF - Procedia Structural Integrity
SN - 2452-3216
T2 - Conference - European Conference on Fracture 2022
Y2 - 27 June 2022 through 1 July 2022
ER -