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1
Content available Operation and DCSBN plasma reactor in laboratory conditions
Krmelová V., Janik R., Kopal I.
Zeszyty Naukowe Wyższej Szkoły Zarządzania Ochroną Pracy w Katowicach
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2018
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Nr 1(14)
95--103
EN
Low-temperature plasma treatment has been used in the last years as a useful tool to modify the surface properties of different materials like textile, glass, wood. Plasma technology applied to textiles is a dry, environmentally and worker friendly method to achieve surface alteration without modifying the bulk properties of different materials. In the present work low-temperature plasma was used to treat surface of cotton fabric. We used laboratory line for plasma surface modification - plasma reactor using DCSBD (Diffuse Coplanar Surface Barrier Discharge) plasma systems with flat and curved electrode with active plasma area 200 x 100 mm for continuous treatment of common textiles and polymeric materials. We described laboratory line for plasma surface modification and safety at work with this low-temperature plasma reactor. Also we defined a temperature distribution in cotton fabric during plasma treatment using thermal camera BCAM FLIR. The surface morphology of the untreated and plasmatreated cotton fabrics was analyzed by scanning electron microscopy (SEM).
PL
Obróbka plazmą w niskiej temperaturze była w ostatnich latach wykorzystywana jako przydatne narzędzie do modyfikacji właściwości powierzchni różnych materiałów, takich jak: tkaniny, szkło, drewno. Technologia plazmy zastosowana do tkanin jest suchą, przyjazną środowisku i pracownikowi, metodą zmiany powierzchni bez modyfikacji dużej masy właściwości różnych materiałów. W niniejszej pracy wykorzystano plazmę o niskiej temperaturze celem obróbki powierzchni materiału z bawełny. Celem modyfikacji powierzchni wykorzystano linię w laboratorium – reaktor plazmowy z zastosowaniem systemów plazmowych DCSBD (Rozproszona Równoległa Bariera Powierzchniowa) z elektrodą płaską i zakrzywioną z czynną powierzchnią plazmy 200 x 100 mm mm celem ciągłej obróbki popularnych tkanin i materiałów polimerycznych. Opisano linię laboratorium wykorzystaną do modyfikacji powierzchni za pomocą plazmy oraz bezpieczeństwo pracy z reaktorem plazmy o niskiej temperaturze. Określono również rozmieszczenie temperatury w materiale z bawełny podczas obróbki plazmą przy użyciu kamery cieplnej BCAM FLIR. Przeanalizowano skład powierzchni niepoddanego i poddanego obróbce plazmą materiału z bawełny za pomocą skaningowej mikroskopii elektronowej (SEM).
2
Content available remote The Thermal Data Interpolation in Data Reduction for Evaluation of Thermal Diffusivity Measured by Flash Method
Kopal I., Koštial P., Ruziak I., Švecová Z., Kučerová J., Mokryšová M.
Machine Dynamics Problems
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2006
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Vol. 30, No. 3
163-166
EN
The paper presents a powerful algorithm useful to solve the problem of experimental data values finding don't occur within the registered experimental data set by using the one-dimensional polynomial interpolation procedure via a cubic spline method. Described free algorithm is presented in the form of Matlab routine with short author's comments.
3
Content available remote The Optimization of Tyre Construction and the Construction Influence on the Rolling Resistance
Mokryšová M., Koštial P., Kopal I., Kučerová J., Švecová Z., Ružiak I.
Machine Dynamics Problems
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2006
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Vol. 30, No. 4
68-73
EN
The rolling resistance (RR) of tyres under vertical load can be measured in the laboratory on a large smooth rolling drum. We have determined the most suitable the steel belt angle. The higher steel belt angle leads to lower rolling resistance, to the better comfort and lower fuel consumption.
4
Content available remote The Fillers Distribution Influence on Rubber Compounds Thermal Conductivity
Koštial P., Ružiak I., Kučerová J., Mokryšová M., Švecová Z., Kopal I., Bezecný J., Osipcakova D.
Machine Dynamics Problems
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2006
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Vol. 30, No. 4
12-19
EN
In the paper we are presenting the study of fillers distribution influence on rubber compounds thermal conductivity. The inhomogeneity of fillers distribution is presented on the measurements of thermal diffusivity as well as the electrical conductivity of rubber compounds.
5
Content available remote Measurements of External Temperature in Rolling Tyre
Koštial P., Kučerová J., Mokryšová M., Švecová Z., Kopal I., Ružiak I.
Machine Dynamics Problems
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2006
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Vol. 30, No. 4
7-11
EN
In this paper we are presenting a complex system for the simultaneous contact-less measurement of external tyre temperatures. The measurement is fully automatic, controlled by a personal computer, and installed "in situ" on the car. The global position system, which is connected with the PC, allows simultaneous measurements of temperatures, pressure and also the car speed.
6
Content available remote Contact Measurement of Thermal Transport Properties of Laminates in Vertical and Horizontal Direction by EDPS Method
Ružiak I., Kopal I., Koštial P., Mokryšová M., Švecová Z., Kučerová J.
Machine Dynamics Problems
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2006
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Vol. 30, No. 4
97-102
EN
In this paper we present the contact measurement of thermal transport properties of distinguished laminate using the extended dynamic plane source (EDPS) method. All used methods are appropriate for the determination of thermal transport properties of materials with low thermal conductivity. Measurement errors do not exceed five percent. We have measured thermal transport properties of laminate in vertical and horizontal directions.
7
Content available remote The Infrared Thermography Applications in Material Engineering
Koštial P., Kopal I., Mokryšová M., Hajduchová L., Klabník M., Žiačik P.
Machine Dynamics Problems
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2004
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Vol. 28, No. 3
183-188
EN
This paper is a contribution into a wider discussion about nondestructive testing in material engineering. The aim of described research is the enhancement of experimental possibilities for subsurface defects detection in materials, products and structures by using an infrared scanning detector camera in real conditions of industrial practice. It was demonstrated that such type of high quality infrared imagers, supported by pulsed thermography with external thermal stimulation, powerful personal computer and several simple image-processing procedures, could serve as a useful tool for contactless detection of various types hidden flaws in different materials.
8
Content available remote Optical Apparatus for Non-Destructive Measurements of Spatial Profile of Objects
Koštial P., Mokryšova M., Kopal I., Klabník M., Žiaćik P.
Machine Dynamics Problems
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2004
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Vol. 28, No. 3
189-194
EN
In the paper we presented the results of measurements of tyre sidewall by commercially produced system Aramis in dynamic regime.
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