Experimental and Simulation Study of Laser Aided Deposition Process Using Image and Temperature Sensors
Laser aided deposition is a material additive based manufacturing process by metallurgically bonding the deposited material to the substrate. For a precise study of the process, a mathematical model was established to investigate thermal and mass transportation phenomena, which includes substrate melting and solidification as well as the powder heating process. The detailed process together with the temperature distribution is simulated. The simulation results of the melt pool length, width and peak temperature are validated for the laser deposition process through the measurements on the melt pool geometry and surface peak temperature by the CMOS camera and the dualwavelength temperature sensor. A smart embedded vision system using CMOS camera is used to measure the size of the melt pool. The length and width of the melt pool are measured in real time using CMOS camera with an on-board DSP processing system which processes the images in real time and provides the output through a serial port to a real-time controller. A dual wavelength non-contact temperature sensor is used for measuring the temperature of the melt pool in real time. . The comparison of the melt pool length and peak temperature was conducted between simulation and experiment and shows a good agreement.
K. Phatak et al., "Experimental and Simulation Study of Laser Aided Deposition Process Using Image and Temperature Sensors," 23rd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings, Laser Institute of America, Jan 2004.
23rd International Congress on Applications of Laser and Electro-Optics
Mechanical and Aerospace Engineering
Keywords and Phrases
Cameras; Lasers; Mass Transportation; Sensors; Temperature Sensors; Visual Communication
Article - Conference proceedings
© 2004 Laser Institute of America, All rights reserved.