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Optimization of Nd:YAG laser welding onto magnesium alloy via Taguchi analysis |
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| Authors: | Lung Kwang Pan Che Chung Wang Ying Ching Hsiao Kye Chyn Ho |
| Affiliation: | a Department of Radiological Technology, ChungTai Institute of Health Science and Technology, Takun, Taichung 406, Taiwan b Department of Mechanical Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 335, Taiwan c Department of Weapon System Engineering,Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 335, Taiwan d General Management Section, Chung Shan Institute of Science and Technology, Lungtan, Taoyuan 325, Taiwan |
| Abstract: | The use of an Nd:YAG laser for thin plate magnesium alloy butt welding was optimized using the Taguchi analytical methodology. The welding parameters governing the laser beam in thin plate butt welding were evaluated by measuring of the ultimate tension stress. The effectiveness of the Taguchi method lies in clarifying the factor that dominates complex interactions in laser welding. The factors can be the shielding gas, laser energy, convey speed of workpiece, point at which the laser is focused, pulse frequency, and pulse shape. Furthermore, 18 combinations of these six essential welding parameters were set and Taguchi's method followed exactly. The optimal result was confirmed with a superior ultimate tension stress of 169 MPa, 2.5 times larger to that from original set for laser welding. |
| Keywords: | Taguchi analysis Nd:YAG laser Magnesium alloy Tension |
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