Volume 22, Issue 8 (August 2022)
Modares Mechanical Engineering 2022, 22(8): 555-565 |
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nikravan A R, kolahan F, Shariati M. Investigation of the effect of ND:YAG laser pulse parameters and compressive force applied to the seam on geometry and strength of the weld joint in 316L stainless steel thin-walled tube. Modares Mechanical Engineering 2022; 22 (8) :555-565
URL: http://mme.modares.ac.ir/article-15-56542-en.html
URL: http://mme.modares.ac.ir/article-15-56542-en.html
1- ferdowsi university of mashhad
2- ferdowsi university of mashhad , kolahan@um.ac.ir
2- ferdowsi university of mashhad , kolahan@um.ac.ir
Abstract: (1170 Views)
Due to the importance of the joints in the pressurized instruments and the abilities of the laser welding in this study, the welding of AISI316L tubes have been studied and analyzed. In this regard a fixture has been drawn in order to positioning of the tubes and fixed on the welding desk. The welding input parameters includes the laser welding adjusting variables, includes (welding current, welding pulse width, and welding frequency). Moreover, the effect of the two other variables (rotating speed and the force applied to the welding seam) has also been studied. The welding output characteristics comprises the welding width, depth of penetration and welding strength. The experimental data has been collected using L27 Taguchi design. The relation between the process input variables and output characteristics has been established using different regression models. Based on the analysis of variance (ANOVA) results, pulse width and welding current with 70% contribution have an influential effect on all the three response characteristics. Moreover, the seam force has only the influential effect on the depth of penetration and strength. Next, in optimization step based on the importance of the process characteristics (strength, depth of penetration, welding width), the optimized levels have been determined. At the end, the optimized condition has been conducted using laser welding, in comparison of which the samples in the design matrix, the welding depth has a close relation with the thickness of the wall, the welding boundaries smother and the strength has a close value to the base metal.
Keywords: Laser welding, Design Of Experiment, regression modeling, analysis of variance, optimization
Article Type: Original Research |
Subject:
Welding
Received: 2021/10/20 | Accepted: 2022/05/5 | Published: 2022/08/1
Received: 2021/10/20 | Accepted: 2022/05/5 | Published: 2022/08/1
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