System and method for monitoring laser shock processing

Details System and method for monitoring laser shock processing System and method for monitoring laser shock processing

2007-09-25

2007-09-25

Heinrich, Samuel M. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121690, C219S121850

Reexamination Certificate

active

10941560

ABSTRACT:
A method and system for monitoring laser shock peening of a work piece. A line spectrum is obtained from radiation emitted by a plasma produced by a laser shock peening process. The shape of the line spectrum about its emission peak is compared to a defined line shape to verify proper operation of the laser shock peening process. The line shape may be a Lorentzian line shape corresponding to a desired line shape. The line shape may a Gaussian line shape corresponding to an undesired line shape. The system can also detect the failure mode that occurs when the opaque layer is broken through by detecting the plasma spectral component produced by the work piece material, along with the plasma produced by the opaque layer.

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