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Vol.26, No.1, 2026, pp. 171–180 |
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EFFECT OF PIN GEOMETRY AND WELDING PARAMETERS ON PERFORMANCE OF FSW-JOINT HDPE Senouci Miloud1 1) Laboratory of Mechanic of Material, Energy and Environment (L2M2E), University Mustapha Stambouli of Mascara, ALGERIA S. Miloud https://orcid.org/0009-0004-0973-426X ; A. Djebli https://orcid.org/0000-0001-9102-2202 , *email: djebliabdelkader@univ-mascara.dz 2) LSTE, University Mustapha Stambouli of Mascara, ALGERIA 3) University of Tiaret, Tiaret, ALGERIA B. Abdelghani https://orcid.org/0000-0002-2827-9483
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Abstract Recent advancements in polymer welding have spotlighted Friction Stir Welding (FSW) as a promising method for creating durable joints in high-density polyethylene (HDPE) without melting the material. This research delves into how three critical factors: tool pin shape, rotation speed, and travel speed affect the ultimate tensile strength (UTS) and ultimate elongation (UE) of the welded HDPE. Two distinct tool pin geometries, cylindrical and hexagonal, are employed to evaluate their effect on the quality of the welded HDPE. A full 23 factorial experimental design is used to study the effect of each parameter, while regression equations are employed to forecast the resulting mechanical properties. The study reveals that the tool pin geometry is the most influential parameter on both ultimate tensile strength and ultimate elongation, with the hexagonal pin yielding stronger welds due to improved stirring action. The welding gave generally good results concerning the UTS in the contrary of UE, where it gave unsatisfactory results. Statistical analyses, like ANOVA confirm the dominant influence of tool pin geometry and give a detailed information about the contribution of all parameters and their interaction on the final weld quality. These findings provide insights into optimising FSW parameters for polymer welding applications. Keywords: • friction stir welding (FSW) • pin geometry • welding parameters • ANOVA • HDPE |
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