Multi-viewpoint imaging based simulations of sensors for APS jet monitoring

0357933 - ÚFP 2011 RIV GB eng J - Článek v odborném periodiku
Djakov, B. E. - Oliver, D.H. - Enikov, R. - Vasileva, E. - Chumak, Oleksiy - Hrabovský, Milan
Multi-viewpoint imaging based simulations of sensors for APS jet monitoring.
Journal of Physics: Conference Series. Roč. 223, č. 1 (2010), 012008-012008. ISSN 1742-6588. E-ISSN 1742-6596.
[International Summer School on Vacuum, Electron, and Ion Technologies (VEIT 2009)/16th./. Sunny Beach, 28.09.2009-02.10.2009]
Grant CEP: GA AV ČR KJB100430701
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: plasma jet * plasma flow fluctuations * image processing
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://iopscience.iop.org/1742-6596/223/1/012008

Test results are presented for different configurations of newly developed optical sensors consisting of several narrow-collimated photo detectors pointed at a plasma jet along different directions in its cross section. The sensors are capable of detecting time-variations of the position, width and asymmetry of a plasma jet. Two plasma torches with different plasma forming gas, air and argon/water vapor mixture, were used in our experiments under typical atmospheric plasma spraying (APS) conditions. The tests are based on fast, side-on imaging of the plasma jet from two or three angles (viewpoints). Reference values for the jet center coordinates, width and maximum brightness were deduced by processing the full information in the images. Next, data from small areas were processed to obtain values of the same parameters that simulate the sensor actual performance. It is commented that the accuracy of the new sensors seems reasonable for the purpose of on-line control of APS.
Trvalý link: http://hdl.handle.net/11104/0196099