Investigation of Vibration Assisted Friction Stir Welding

Hamid Montazerolghaem; Mohsen Badrossamay; Alireza Fadaei Tehrani

doi:10.4028/www.scientific.net/KEM.504-506.741

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 504-506Investigation of Vibration Assisted Friction Stir...

Investigation of Vibration Assisted Friction Stir Welding

Abstract:

Friction Stir Welding (FSW) is a relatively new solid state joining method that can be used to achieve very good weld quality. This technique is energy efficient, environment friendly, and versatile. The FSW process utilizes a rotating tool in which includes a pin and shoulder to perform the welding process. FSW applications in high strength alloys, such as stainless steel remain limited due to large welding force and consequent tool wear. It has been shown that applying the ultrasonic vibration on some processes such as turning and drilling the resultant forces are decreased and process condition is improved. In this paper the influence of applying vibration on FSW is investigated in simulating tools. For FSW modeling a proper transfer function of axial force has been proposed. The resultant axial force of conventional FSW and Vibration Assisted FSW (VAFSW) are compared in frequency and time domain state spaces. A good correlation between FSW simulation and experiments is observed. For further investigation of VAFSW the response surface of design of experiment (DOE) method is utilized. The influence of changing VAFSW process parameters is investigated. The simulation results indicate that vibration helps to decrease the welding force. Using DOE method the effects of implemented frequency and vibration speed amplitude in FSW are found.

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Periodical:

Key Engineering Materials (Volumes 504-506)

Pages:

741-746

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.504-506.741

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Online since:

February 2012

Authors:

Hamid Montazerolghaem, Mohsen Badrossamay, Alireza Fadaei Tehrani

Keywords:

Design of Experiment (DOE), Force Analysis, Friction Stir Welding (FSW), Vibration Assisted

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