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Development of trinocular CCD-based optical detector for real-time monitoring of laser cladding

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4 Author(s)
Asselin, M. ; Dept. of Mech. Eng., Waterloo Univ., Ont., Canada ; Toyserkani, E. ; Iravani-Tabrizipour, M. ; Khajepour, A.

Real-time measurements of clad geometry is an essential control signal for the closed-loop control of laser cladding (laser solid freeform fabrication) process. The measurement of clad geometry in real-time by vision-based detectors is a challenging task due to relative position of clad melt pool and the detectors and intensive image processing. In this paper, the development of a novel trinocular optical CCD-based detector for measuring clad geometry is discussed. An algorithm, including a fuzzy adaptive threshold strategy, a perspective image projection method, and a simple but realistic strategy for analyzing the projected images is developed to extract the clad height, clad width and rate of solidification in real-time.

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Mechatronics and Automation, 2005 IEEE International Conference  (Volume:3 )

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