Ultrasonic Impact Treatment method is an efficient method that can turned the harmful residual stress on the surface layer or weld area into compressive stress. The UIT equipment uses high-power energy to drive impact head to impact metal surface at 20000 times in frequency.

The Ultrasonic impact treatment equipment produces a number of beneficial effects in metals and alloys. Foremost among these is increasing the resistance of materials to surface-related failures, such as fatigue and stress corrosion cracking. The fatigue testing of large-scale parts and welded specimens showed that the UIT/UP is the most efficient improvement treatment as compared with traditional techniques such as heat treatment, TIG-dressing, hammer peening and shot peening.

Ultrasonic impact treatment technology is a cost effective method for increasing the safety and endurance of structures, so UIT has being accepted in many industries as a superior and viable technology for fatigue enhancement.