Chromatic monitoring of dc plasma torches: The latest developments

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F06%3A00042426" target="_blank" >RIV/61389021:_____/06:00042426 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Chromatic monitoring of dc plasma torches: The latest developments

Original language description

The chromatic-sensing technique is based on reduction of the Optical spectroscopic information about an object to three signals obtained by photodetectors with different spectroscopic responsivities. Each plasma state is represented by a point of the hue, luminance, and saturation (HLS) Or C1C2C3 chromaticity space. For specific operating conditions, the plasma fluctuations cause the formation of a ring around the point of S = 0, which makes the measurement of H impossible. Such a situation can be avoided by alternative tuning of the chromatic system. Systematic studies of the output/input correlation for air and water vapour/argon Mixture plasmas are made. The results are presented in the form of 'response surfaces', which are of interest for an eventual on-line control. This is illustrated by a 'C-2 vs. argon flow rate and jet axial co-ordinate' surface, which can be used to locate the correct powder injection point in a plasma spray process.

Czech name

Chromatické monitorování obloukových plazmatronů: Poslední vývoj

Czech description

Chromatická metoda je založena redukci informace z optického spektra vyzařovaného plazmatem na tři signály získané snímáním třemi fotodetektory s různými spektrálními citlivostmi. Měření byla provedena na plazmatu směsi vodní páry a argonu. Metoda může být užita pro určení optimálních podmínek podávání prášku při plazmovém stříkání.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

—

Project

<a href="/en/project/GA202%2F05%2F0669" target="_blank" >GA202/05/0669: Expanding supersonic plasma jet generated in dc water-stabilized arcs</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plasma Processes and Polymers

ISSN

1612-8850

e-ISSN

—

Volume of the periodical

3

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

4

Pages from-to

170-173

UT code for WoS article

—

EID of the result in the Scopus database

—