Experimental investigation of vibration stress relief of A106 steel pipe T-welded fittings

Abstract EN

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 hard-ness of the material.

The vibratory stress relief treatment was carried out at different vibration fre-quency.

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.