Our studies on the improvement of processing efficiency for laser peening are presented in this paper.
Although laser peening is a useful technique for the surface treatment of metals, its uses are limited to
special applications, e.g., airplane parts, nuclear power plants, etc. For applications for general industries,
the processing efficiency must be improved through systematic studies that identify the numerous
parameters that affect laser peening. As an example, this paper introduces the effect of acoustic impedance
control in the plasma confinement layer on laser peening. Three solutions, sucrose, glycerol, and
ethylene glycol, have been used as the plasma confinement layer to improve the processing efficiency of
laser peening.
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