How Laser Peening Improves Fatigue Strength

How Laser Peening Improves Fatigue Strength 

 

This video from the Metal Improvement Co. shows how lasers improve properties by inducing residual compressive stress. The area to be peened can be covered with material to act as an ablative layer and simultaneously as a thermal insulating layer, or peened directly onto the base metal. Laser peening induces exceptionally deep residual compressive stresses to enhance the fatigue strength of critical metallic components.