| 摘要 |
A method and apparatus for obtaining an indication of the quality of a laser material processing operation wherein at least two of the parameters comprising melt pool temperature, vapour intensity and plasma intensity are monitored separately but simultaneously. Sensors 10, 12 responsive to different parts of the electromagnetic spectrum associated with different ones of said parameters are arranged so as to receive radiated light from the vapour and plasma plume region 16. <IMAGE> |
