ACOUSTIC MONITORING OF LASER PULSES IN PROCESSING OF METAL-CERAMIC HARD ALLOY

This work is devoted to studying the relationship between the factors of processing with laser pulses of T15K6 hard alloy, the parameters of acoustic emission, and process productivity. The laser source was a pulsed fiber laser with a wavelength of 1064 nm, a power of 20 to 60 W, and pulse duration of 250 to 500 ns. The main dependencies for the lower and upper frequency ranges (10-28 kHz and 32-70 kHz) were plotted. Acoustic emission signals provide insight into the effects of concentrated energy flows on material and can be used to understand hard-to-observe phenomena and ongoing processing performancence.