Particle tracking in a simulated melt pool of laser powder bed fusion

Laser powder bed fusion (LPBF) is an additive manufacturing technique that prints objects layer-by-layer by selectively melting powders using a focused laser. The mechanical properties of LPBF parts are affected processing parameters influence the flow within melt pool. Marangoni convection surface tension dependent mass transfer process from region lower to higher tension, influenced temperature and presence surface-active elements. convection-induced pattern in molten metal pool can induce different characteristics defects. Tracking oxide particles be potential mechanism for assessing fabricated parts. Therefore, this work, particle tracking algorithm was developed track produced LPBF. patterns were observed high-speed camera. Binary images simulated MATLAB script based on experimental observations. used patterns: radially outward, inward, rotational. Various factors affecting accuracy identified, such as size, image pixel size number oxides, pattern, velocity. velocity found have maximum accuracy. probability error has been quantified, causes errors explored.