Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids
Introduction. Spark-erosion processing of metals and alloys granules in working liquids is the basis of a several technological processes. Efficiency of energy use in them and parameters of the resulting product largely depend on the accuracy of stabilization and regulation of pulse power in each pl...
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National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2024
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Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-300175 |
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Electrical Engineering & Electromechanics |
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| datestamp_date |
2024-10-18T19:06:00Z |
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OJS |
| language |
English Ukrainian |
| topic |
discharge current plasma channels metal granules optical emission spectrum |
| spellingShingle |
discharge current plasma channels metal granules optical emission spectrum Shydlovska, N. A. Zakharchenko, S. M. Zakharchenko, M. F. Kulida, M. A. Zakusilo, S. A. Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| topic_facet |
discharge current plasma channels metal granules optical emission spectrum розрядний струм плазмові канали металеві гранули оптичний спектр випромінювання |
| format |
Article |
| author |
Shydlovska, N. A. Zakharchenko, S. M. Zakharchenko, M. F. Kulida, M. A. Zakusilo, S. A. |
| author_facet |
Shydlovska, N. A. Zakharchenko, S. M. Zakharchenko, M. F. Kulida, M. A. Zakusilo, S. A. |
| author_sort |
Shydlovska, N. A. |
| title |
Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_short |
Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_full |
Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_fullStr |
Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_full_unstemmed |
Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_sort |
spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids |
| title_alt |
Спектральний та оптикометричний методи контролю параметрів плазмових каналів, спричинених розрядними струмами між гранулами металів у робочих рідинах |
| description |
Introduction. Spark-erosion processing of metals and alloys granules in working liquids is the basis of a several technological processes. Efficiency of energy use in them and parameters of the resulting product largely depend on the accuracy of stabilization and regulation of pulse power in each plasma channel between the granules. To achieve this, until now only the voltage and current of the discharge pulses in the entire layer of granules have been controlled. Problem. The measurement methods, which are used, are not effective enough for monitoring the parameters of individual plasma channels and predicting the size distribution of eroded metals particles at the stage of their formation. The aim of the work is to develop a method for determining the volumes of components of plasma channels in layers of metals granules during their spark-erosion treatment to predict the size distribution of eroded metal particles at the stage of their formation, as well as to simplify the method of spectrometric analysis of the elemental composition of substances surrounding plasma channels for the operational prediction of the chemical composition of resulting products. Methodology. A series of experiments were carried out on spark-erosion processing of Al and Ag granules layers in distilled water. Using a digital camera, images of the plasma channels in them were obtained. Based on the theory of pulsed electrical breakdown of liquid dielectrics, an analysis of the components of plasma channels was carried out. Using the specialized ToupView program, the volumes of equivalent ellipsoids of rotation were determined, approximating the halos of colored radiation likely arising from streamers, as well as the spark cores of plasma channels emitting white light. The shades of the resulting radiation were studied for several metals and working liquids. The obtained data were compared with the known results of spectrometric studies for the same elements excited by similar mechanisms. Results. The theory of discharge-pulse systems for spark-erosion processing of granular conductive media has been developed in the direction of new methods for monitoring the parameters of discharge pulses and predicting the chemical composition and size distribution parameters of eroded metal particles at the stage of their production. An optic-metric method has been developed for determining the volumes of halos and cores of plasma channels. A simplified spectral method for determining the chemical composition of erosion particles based on the shade of the resulting radiation was proposed. Originality. The developed new optic-metric method makes it possible to obtain information about almost every plasma channel, which refines predictions of the size distribution of erosion particles. To implement the method, general-purpose hardware and specialized software that is freely available are used. The developed method of simplified spectral analysis of excited atoms makes it possible to make preliminary predictions of the chemical composition of the obtained erosion particles already at the stage of their formation without the use of expensive specialized equipment. Practical significance. The ratio of the volumes of halos and cores of plasma channels between Al and Ag granules in distilled water was measured. An analysis of the emission spectra of plasma channel halos between Al, Ag and Cu granules in distilled water, Fe in ethyl alcohol, Ni-Mn-Ga and Ti-Zr-Ni alloys in liquid nitrogen, and Ti-Zr-Ni in liquid argon was carried out. Based on spectrometry data, the resulting shades of these radiations were substantiated and their description in the RGB system is given. References 56, table 1, figures 4. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” |
| publishDate |
2024 |
| url |
http://eie.khpi.edu.ua/article/view/300175 |
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2024-12-15T20:53:20Z |
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eiekhpieduua-article-3001752024-10-18T19:06:00Z Spectral and optic-metric methods of monitoring parameters of plasma channels caused by discharge currents between metals granules in working liquids Спектральний та оптикометричний методи контролю параметрів плазмових каналів, спричинених розрядними струмами між гранулами металів у робочих рідинах Shydlovska, N. A. Zakharchenko, S. M. Zakharchenko, M. F. Kulida, M. A. Zakusilo, S. A. discharge current plasma channels metal granules optical emission spectrum розрядний струм плазмові канали металеві гранули оптичний спектр випромінювання Introduction. Spark-erosion processing of metals and alloys granules in working liquids is the basis of a several technological processes. Efficiency of energy use in them and parameters of the resulting product largely depend on the accuracy of stabilization and regulation of pulse power in each plasma channel between the granules. To achieve this, until now only the voltage and current of the discharge pulses in the entire layer of granules have been controlled. Problem. The measurement methods, which are used, are not effective enough for monitoring the parameters of individual plasma channels and predicting the size distribution of eroded metals particles at the stage of their formation. The aim of the work is to develop a method for determining the volumes of components of plasma channels in layers of metals granules during their spark-erosion treatment to predict the size distribution of eroded metal particles at the stage of their formation, as well as to simplify the method of spectrometric analysis of the elemental composition of substances surrounding plasma channels for the operational prediction of the chemical composition of resulting products. Methodology. A series of experiments were carried out on spark-erosion processing of Al and Ag granules layers in distilled water. Using a digital camera, images of the plasma channels in them were obtained. Based on the theory of pulsed electrical breakdown of liquid dielectrics, an analysis of the components of plasma channels was carried out. Using the specialized ToupView program, the volumes of equivalent ellipsoids of rotation were determined, approximating the halos of colored radiation likely arising from streamers, as well as the spark cores of plasma channels emitting white light. The shades of the resulting radiation were studied for several metals and working liquids. The obtained data were compared with the known results of spectrometric studies for the same elements excited by similar mechanisms. Results. The theory of discharge-pulse systems for spark-erosion processing of granular conductive media has been developed in the direction of new methods for monitoring the parameters of discharge pulses and predicting the chemical composition and size distribution parameters of eroded metal particles at the stage of their production. An optic-metric method has been developed for determining the volumes of halos and cores of plasma channels. A simplified spectral method for determining the chemical composition of erosion particles based on the shade of the resulting radiation was proposed. Originality. The developed new optic-metric method makes it possible to obtain information about almost every plasma channel, which refines predictions of the size distribution of erosion particles. To implement the method, general-purpose hardware and specialized software that is freely available are used. The developed method of simplified spectral analysis of excited atoms makes it possible to make preliminary predictions of the chemical composition of the obtained erosion particles already at the stage of their formation without the use of expensive specialized equipment. Practical significance. The ratio of the volumes of halos and cores of plasma channels between Al and Ag granules in distilled water was measured. An analysis of the emission spectra of plasma channel halos between Al, Ag and Cu granules in distilled water, Fe in ethyl alcohol, Ni-Mn-Ga and Ti-Zr-Ni alloys in liquid nitrogen, and Ti-Zr-Ni in liquid argon was carried out. Based on spectrometry data, the resulting shades of these radiations were substantiated and their description in the RGB system is given. References 56, table 1, figures 4. Обґрунтовано актуальність та доцільність розроблення та застосування оптичних методів контролю параметрів плазмових каналів у шарах металевих гранул під час їх іскро- та плазмоерозійного оброблення з метою підвищення точності керування процесами і якості продукції, яка отримується. Розроблено оптикометричний метод визначення відношення об’ємів кольорових ореолів, імовірно спричинених стримерами, та іскрових ядер плазмових каналів між гранулами металів у робочій рідині, який не потребує спеціалізованого спектрометричного обладнання, а базується на використанні апаратних засобів загального призначення та спеціалізованого програмного забезпечення, яке є у вільному доступі. Даним методом проведено аналіз відношення об’ємів кольорових ореолів та іскрових ядер плазмових каналів між гранулами Al та Ag у дистильованій воді, що дало додаткову інформацію для прогнозів співвідношення нано- та мікророзмірних фракцій ерозійних частинок металів на етапі їх формування. Проведено аналіз спектрів випромінювання кольорових ореолів плазмових каналів у дистильованій воді між гранулами Al, Ag, Fe та Cu, а також Ni-Mn-Ga та Ti-Zr-Ni у рідкому азоті і Ti-Zr-Ni у рідкому аргоні. Обґрунтовано і узагальнено відтінки результуючого випромінювання у цих випадках та наведено їх опис за RGB-кодами. Обґрунтовано можливість спрощення спектрометричного методу аналізу плазми та оточуючої її парогазової фази у шарах металевих гранул за аналізом відтінку результуючого випромінювання, який базується на отриманих раніше спектрометричних даних. Бібл. 56, табл. 1, рис. 4. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2024-10-18 Article Article Peer-reviewed Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/300175 10.20998/2074-272X.2024.6.10 Electrical Engineering & Electromechanics; No. 6 (2024); 72-83 Электротехника и Электромеханика; № 6 (2024); 72-83 Електротехніка і Електромеханіка; № 6 (2024); 72-83 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/300175/304112 http://eie.khpi.edu.ua/article/view/300175/304113 Copyright (c) 2024 N. A. Shydlovska, S. M. Zakharchenko, M. F. Zakharchenko, M. A. Kulida, S. A. Zakusilo http://creativecommons.org/licenses/by-nc/4.0 |