Simple Self-Selective Method of Velocity Measurement for Particles in Spray Coating

A simple, low-cost technique for measuring the velocity of particles for spray coating methods is presented. The accuracy of measurement is determined by the precision of the only quantity of geometrical size of the deposited layer. Self-selection of the particles with parameters suitable for deposition occurs. For typical deposition conditions, a velocity of 650 m/s was detected. This technique allows in situ velocity monitoring during process.