In our laser peening process, a unique high energy laser is fired at the surface of a metal part to generate pressure pulses of one million pounds per square inch, which send shock waves through the part. Multiple firings of the laser in a pre-defined surface pattern will impart a layer of residual compressive stress that is four times deeper than that attainable from conventional peening treatments. Deeper levels of compressive stress provide greater resistance to potential fatigue and corrosion failures.
Curtiss-Wright Surface Technologies developed its laser peening process in conjunction with the Lawrence Livermore National Laboratory. Our laser peening process uses a unique high energy Nd:glass laser in conjunction with precision robotics to provide consistent and repeatable coverage of the square laser spots in the desired areas of the parts to be laser peened. The SAE has issued Specification AMS-2546 to address the recommended parameters for laser peening of metal surfaces.
Curtiss-Wright Surface Technologies operates laser peening facilities in the United States and the United Kingdom. For large stationary parts, our Mobile Laser Peening Facility enables application of the laser peening technology at the customer’s site.