System and method for laser shock peening

摘要

A system (10) for laser shock peening includes a laser (12) positioned to direct a laser pulse (20) at a first side (22) of a work piece (24) and a coupler (30) on a second side (36) of the work piece (24). The system (10) further includes a Doppler shift detector (16) positioned to measure a velocity of the coupler (30). A method for laser shock peening includes depositing an amount of energy from a laser pulse (20) into a first side (22) of a work piece (24) and transmitting a pulse (40) having a first frequency at a second side (36) of the work piece (24). The method further includes receiving a reflected pulse (46) having a second frequency from the second side (36) of the work piece (24) and determining the velocity of the work piece (24) based on the difference between the first frequency and the second frequency.