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- W3097572914 abstract "In this study, the effect of process variables on the weld shape in laser lap welding of aluminum alloys is investigated. A welding experiment using a central composite design (CCD) and the corresponding analysis of variance (ANOVA) were conducted to statistically investigate the significance of process variables and their interaction effect on the weld shape. The results of the ANOVA and analysis of the interaction effect indicated that laser power and focal position the most significantly affected weld depth. The weld depth increased as the laser power increased and the focal position became far away from the surface (below the surface). Scan speed and focal position corresponded to critical factors for the bead width. The bead width increased as the scan speed decreased and the focal position became far away from the surface (above the surface). Furthermore, the laser power and scan speed had exhibited the most significant effect on the weld area. The weld area increased when laser power increased and scan speed decreased. Second-order regression models were developed to predict the weld shape (weld depth, bead width, and weld area). The order of fitness of the regression models was as follows: bead width (R2=0.94), weld depth (R2=0.90), and weld area (R2=0.82). Key words: Laser welding, Central composite design(CCD), Aluminum alloy, Regression model, Weld shape" @default.
- W3097572914 created "2020-11-09" @default.
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- W3097572914 date "2020-10-30" @default.
- W3097572914 modified "2023-10-01" @default.
- W3097572914 title "Weld Shape Analysis using Central Composite Design in the Laser Welding of Aluminum Alloys" @default.
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- W3097572914 doi "https://doi.org/10.5781/jwj.2020.38.5.10" @default.
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