The fracture behaviour of lap-shear joints manufactured by friction stir spot welding (FSSW) technique is examined in this paper. Two aluminium sheets of 2.8 mm thickness were welded using different process parameters to form a lap-shear joint. Special tool was designed and fabricated for the stir-spot welding process. Tensile-shear tests were performed to determine the tensile-shear load bearing capacity and toughness of the weld. The stress intensity factor and the J-integral around a weld are determined in order to characterize the fracture behavior. The effect of different main process controlling parameters, e.g., the tool prop pin rotating speed, duration action time and sinking/penetration depth into the lower welded sheet on the weld fracture behaviour has been investigated through an intensive experimental program. Optical and scanning electron microscopes fractographes were obtained to examine the weld fracture modes. The results show that higher frictional heat due to relatively higher tool probe pin rotational speed and penetration depth into the lower sheet produces improved joint static strength and toughness.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-49255
PROCEEDINGS PAPER
Fracture Behavior of Friction Stir Spot Welded Joint Available to Purchase
Abdel-Hamid I. Mourad,
Abdel-Hamid I. Mourad
United Arab Emirates University, Al-Ain, UAE
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Khalifa H. Harib,
Khalifa H. Harib
United Arab Emirates University, Al-Ain, UAE
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Aly El-Domiaty
Aly El-Domiaty
United Arab Emirates University, Al-Ain, UAE
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Abdel-Hamid I. Mourad
United Arab Emirates University, Al-Ain, UAE
Khalifa H. Harib
United Arab Emirates University, Al-Ain, UAE
Aly El-Domiaty
United Arab Emirates University, Al-Ain, UAE
Paper No:
PVP2010-25986, pp. 205-215; 11 pages
Published Online:
January 10, 2011
Citation
Mourad, AI, Harib, KH, & El-Domiaty, A. "Fracture Behavior of Friction Stir Spot Welded Joint." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B. Bellevue, Washington, USA. July 18–22, 2010. pp. 205-215. ASME. https://doi.org/10.1115/PVP2010-25986
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