Abstract
In this study, the size distribution and average velocity of welding spatters were measured for various operation current and time conditions of welder. The analysis procedure using the Image-J program was suggested to determine the spatter size using the thermal camera images. The PIV analysis using Matlab program was used for the momentum and velocity of scattering spatters. The results showed that as the operation current of welder increase from 70A to 90A, the average size and maximum velocity of spatter particles increased by2.4 mm and 1.5 m/s, respectively.
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