Experimental Investigation of Vibration Stress Relief of A106 Steel Pipe T-Welded Fittings

  • Hameed Dwech Lafta Technical College of Engineering- University of Sulaimani Polytechnic
  • Sarkawt Rostam Technical College of Engineering- University of Sulaimani Polytechnic
  • Fryad Jalal Mahmud Technical College of Engineering- University of Sulaimani Polytechnic
  • Ronya Osman Abdulrahman Technical College of Engineering- University of Sulaimani Polytechnic
  • Rebin Omer Ali Technical College of Engineering- University of Sulaimani Polytechnic
  • Rabar Abdulbaqi Rauf Technical College of Engineering- University of Sulaimani Polytechnic
Keywords: Vibratory stress relief, Residual stresses, Welded pipe fitting, Heat treatment, Hardness test.

Abstract

This research examines the use of vibratory treatments to reduce residual stresses in small welded parts. In this experimental investigation, a post weld vibration treatment was applied to T- A106 steel pipe fitting specimens to study the effect of the treatment on the residual stress and the hardness of the material. The vibratory stress relief treatment was carried out at different vibration frequency. The results have demonstrated that post-weld vibratory stress relief of small size fittings is possible and residual stress may be relieved, and the treatment may be an alternative method for heat treatment especially when unchange in dimensions and material stability are required.

 

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Published
2019-07-31
How to Cite
Lafta, H., Rostam, S., Mahmud, F., Abdulrahman, R., Ali, R. and Rauf, R. (2019) “Experimental Investigation of Vibration Stress Relief of A106 Steel Pipe T-Welded Fittings”, Journal of Engineering, 25(8), pp. 52-61. doi: 10.31026/j.eng.2019.08.04.