Fatigue Strength Improvement by Ultrasonic Impact Treatment (UIT)_

Author:  Dan Spinner, Applied Ultrasonics
Source:  The Shot Peener magazine, Vol 16 / Issue 4, Winter 2003
Doc ID:  2003046
Year of Publication:  2003
Abstract:  
Ultrasonic Impact Treatment (UIT) was originally invented to reduce welding stresses and deformations, introduce compressive stresses, increase corrosion-fatigue strength of welded joints and specifically enhance the fatigue resistance at subzero temperatures. In this vein, UIT has been used on bridge weldments in the U.S. when bridge repairs have been made, and in some instances, new bridge construction.