Peening accordingly means the working of metal by hitting with a hammer
In the early 1970s peening experienced a major innovation when researchers such as Allan Clauer at Battelle labs in Columbus, Ohio applied high intensity laser beams onto metal components to achieve deep compressive residual stresses, which they patented as Laser Shock Peening, and became known as laser peening in the late 1990s, when it was first applied to gas fired turbine engine fan blades for the U.S. Air Force.
Peening |