e/Laser peening

Information
has gloss	eng: Laser peening, or laser shock peening (LSP), is the process of hardening or peening metal using a powerful laser. Laser peening can impart a layer of residual compressive stress on a surface that is four times deeper than that attainable from conventional shot peening treatments. A coating, usually black tape or paint, is applied to absorb the energy. Short energy pulses are then focused to explode the ablative coating, producing a shock wave The beam is then repositioned and the process is repeated, creating an array of slight indents of compression and depth with about 5-7% cold work. A translucent layer, usually consisting of water, is required over the coating and acts as a tamp, directing the shock wave into the treated material. This computer-controlled process is then repeated, often as many a three times, until the desired compression level is reached, producing a compressive layer as deep as 1-2mm average.
lexicalization	eng: Laser hardening
lexicalization	eng: Laser Peening
instance of	e/Laser applications