Publication Type : Journal Article
Publisher : International Journal of Advanced Manufacturing Technology
Source : International Journal of Advanced Manufacturing Technology, Volume 107, Issue 11-12, p.4925 - 4937 (2020)
Url : https://doi.org/10.1007/s00170-020-05341-7
Keywords : Friction stir welding, Heat generation, non-circular tool pin, Optimum conditions, Weld Quality
Campus : Chennai
School : School of Engineering
Center : Research & Projects
Department : Mechanical Engineering
Year : 2020
Abstract : Friction stir welding tools with non-circular pins exhibit comparatively superior weld quality than circular pins. Improper selection of process parameters directs towards excess or insufficient heat supply which deteriorates weld quality and tool life. This necessitates exact prediction of heat generation with respect to the chosen pin geometry that is required to optimise process parameters. In this paper, a novel analytical model is developed to quantify the percentage reduction in heat generation on the replacement of circular tool pin with non-circular. Experiments were conducted using tools with different pin geometries to validate the proposed model. Based on the obtained results, optimum process variable selection charts were prepared with respect to the reduction in heat supply to facilitate amiable environment to use non-circular tool pins. Weld quality on the suggested range in the charts was examined through macro structure, hardness and tensile analysis.
Cite this Research Publication : Stephen Leon J., Bharathiraja G., and Jayakumar V., “Analytical and experimental investigations of optimum thermomechanical conditions to use tools with non-circular pin in friction stir welding”, International Journal of Advanced Manufacturing Technology, vol. 107, no. 11-12, pp. 4925 - 4937, 2020.