Temat: atomic - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Surface topography of slide journal bearings
Autorzy:: Miszczak, A.
Czaban, A.
Powiązania:: https://bibliotekanauki.pl/articles/246105.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: atomic force microscope
surface topography
journal bearing
Opis:: In this article the measurements results of surface topography of different types of slide bearings sleeves have been presented. The research has been conducted with the use of atomic force microscope (AFM). The results of measurements of surface topography were presented in the form of surface topography maps, three-dimensional graphs and some examples of selected cross-sections of investigated surface in the form of profile graphs. Measurements of surface topography were made for thin-walled sleeves of slide journal bearings covered with PTFE, POM, bronze and white metal layers. Operated and new sleeves have been considered with the use of Atomic Force Microscope NT-206produced in MTM in Minsk, Republic of Belarus [2]. Atomic Force Microscope NT-206 provides information for samples with maximum roughness value plus or minus 1 mi m. Max. field in one scanning process is up to 32)um x 32mi m. Measurements were preceded with resolution 256x256points. Presented in the work results of surface topography measurements also include the calculated values of average deviation profile Ra and Rq and the value of fixed distance between the lowest and highest inequality. The application SurfaceXplorer was used for processing and visualization of the data obtained from AFM NT-206, which besides from generating 2D, 3D and profile diagrams, was used to calculate and draw graph of height distribution. The comparison of received data will allow verifying type and amount of surface wear of discussed journal micro-bearings parts in micro and nanoscale and will help to design surface layers with improved tribological properties.
Źródło:: Journal of KONES; 2011, 18, 3; 279-285
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Surface topography of non-operated slide journal micro-bearings
Autorzy:: Czaban, A.
Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/242167.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: atomic force microscope
surface topography
microgrooves
herringbone grooves
micro-bearing
Opis:: In this paper authors present results of measurements of slide journal bearings surface topography measured with an atomic force microscope (AFM). The results of measurements of surface topography were presented in the form of surface topography maps, three-dimensional graphs and some examples of selected cross-sections of investigated surface in the form of profile graphs. Measurements of surface topography were made for journals and sleeves of slide journal micro-bearings from personal computers' hard drives and fans, with the Atomic Force Microscope NT-206 produced in MTM in Minsk, Republic of Belarus. The values of profile roughness parameters Ra and Rq and the distance between maximum peak height and maximum valley depth are presented as well. The application SurfaceXplorerŽ was used for processing and visualization of the data obtained from AFM NT-206, which besides from generating 2D, 3D and profile diagrams, was used to calculate and draw graph of height distribution. Surface pictures of investigated bearings sleeves were made with the optical microscope Zeiss Axiovert 25+. That measurements give information about micro-grooves dimensions and location. On the surfaces of studied micro-bearings some micro-grooves can be found in form of herringbone, with depth about 1.5mi m and width 150/mi m. Received information about micro-grooves geometry will allow to develop proper theory of hydrodynamic lubrication for micro-bearings with micro-grooves. Topography of surfaces of investigated journal micro-bearings will be reconsidered after exploiting them proper amount of time.
Źródło:: Journal of KONES; 2011, 18, 2; 109-115
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Nanoindentation and atomic force microscopy of thin surface layers formed on the shaft surface after burnishing process
Autorzy:: Kuznetsova, T.
Zubar, T.
Chizik, S.
Miszczak, A.
Labuda, W.
Powiązania:: https://bibliotekanauki.pl/articles/242839.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: microstructure
atomic force microscopy
nanoindentation
microhardness
Young's modulus
burnishing process
Opis:: The article presents the experimental results of investigation of the pumps shaft surface made of stainless steel after burnishing process. The process of burnishing shafts proposed here aims at increasing the service durability of marine pump shafts of seawater installations, which should give economic benefits in comparison with traditional methods. Burnishing process enables the achievement of high smoothness of machined surface together with the surface layer hardening. This process has been performed in industrial experience on universal machine tools and on CNC machines but it is regarded as plastic tooling. Therefore, the final formation of dimensions and service properties with the use of burnishing constitutes a chipless and dustless treatment, which allows for ranking burnishing among ecological tooling methods. The properties of the surface layers determine the tribological properties of the shaft. The methods of scanning electron microscopy (SEM), atomic force microscopy (AFM) and nanoindentation (NI) were used. The morphology of the changed layers formed by plastic deforming of steel during burnishing treatment was investigated on micro- and nanolevel by SEM and AFM after 1, 2, 3 and 4 passed of burnishing tool. The values of microhardness and Young´s modulus were measured on the shaft cross section from the surface till the 50 – 300 μm depth. The presence of the soft changed layer on the hardened shaft surface after burnishing process determines the decrease of the coefficient of friction during exploitation.
Źródło:: Journal of KONES; 2016, 23, 3; 303-310
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Surface topography of operated slide journal micro - bearings used in computer fans
Autorzy:: Miszczak, A.
Czaban, A.
Labuda, W.
Powiązania:: https://bibliotekanauki.pl/articles/242980.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: atomic force microscope
surface topography
microgrooves
herringbone grooves
micro-bearing
Opis:: In this paper authors present results of measurements of slide journal bearings surface topography measured with a profilometer and an atomic force microscope (AFM). Surface topography of investigated bearings (i.e. journals and sleeves) was measured using the Hommeltester T8000- R60 profilometer. The results of these measurements give information about micro-grooves dimensions and location. Measurements of surface topography were made for journals and sleeves of slide journal micro-bearings from personal computers fans, with the Atomic Force Microscope NT-206 produced in MTM in Minsk, Republic of Belarus. The results of measurements of surface topography were presented in the form of surface topography maps, threedimensional graphs and some examples of selected cross-sections of investigated surfaces in the form of profile graphs. The values of profile roughness parameters Ra and Rq and the distance between maximum peak height and maximum valley depth are presented as well. The application SurfaceXplorer registered trademark was used for processing and visualization of the data obtained from AFM NT-206, which besides from generating 2D, 3D and profile diagrams, was used to calculate and draw graphs of height distribution. In this research authors used two identical sets of micro-bearings. The investigated bearings are: a) Kama Flow SP0825FDB12H fan with grooved surface of bearing sleeve, b) Xilence Case fan which sleeve surface was without grooves. First set of that micro-bearings functioned for a year at rated RPM continuously (i.e. 24 hours a day). Second set of the same micro-bearings also functioned for a year at rated RPM, but in intermittent mode (i.e. 15 minutes on, 15 minutes off). On the surfaces of studied micro-bearings some microgrooves can be found in form of herringbone, with depth about 1-2..m and width 100-150..m. Received information about microgrooves geometry will help to develop proper theory of hydrodynamic lubrication for micro-bearings with microgrooves and allows determining how the mode of operating affects on the wear of co-operating surfaces.
Źródło:: Journal of KONES; 2012, 19, 4; 457-463
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Structure analysis of the surface of plunger and barrel assembly in the injection pump pumping section
Autorzy:: Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/246030.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: atomic force microscope
surface topography
roughness
plunger
barrel
injector pump
pumping section
Opis:: Precision surfaces in a diesel engine’s fuel system are used in the two components. First one is the pumping section in the injection pump. The second ones are injectors. In this paper authors present results of the topography measurements of the surface of plunger and barrel assembly in the injection pump pumping section. The measurements were performed using the atomic force microscopy (AFM) NT-206. The measured surface topographies were shown in the form of two and three-dimensional views of selected areas of the investigated surfaces. There are also presented the profiles of the selected area cross-sections as well as roughness height distribution and cumulative height distribution of roughness. Additionally, the basic parameters describing the surface roughness, such as: a roughness average Ra, a root mean square value Rq of roughness, a skewness Ssk (Rsk) and kurtosis Sku (Rku), are also specified. The samples (plungers and barrels), which have been measured, come from the injection pump pumping section as a new ones and after estimated period of operation time. The lateral precision surfaces have been measured. The atomic force microscope NT-206 allows to perform scanning of the measured surface with maximum are dimensions of 32 μm x 32 μm and maximal roughness height of ± 1 m. Scanned surfaces was divided into 256x256 measuring points and the measurements were performed in the static (contact) mode. After surface scanning on the atomic force microscope, the data was calculated in the SurfaceXplorer® 1.311 or Gwyddion 2.35 software. In this paper, only selected surfaces from the several dozen performed scans are shown. The obtained results allow to determinate the degree and type of wear of tested surfaces at the micro-level.
Źródło:: Journal of KONES; 2014, 21, 3; 227-234
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Surface topography analysis of precision assemblies of fuel injector nozzles
Autorzy:: Miszczak, A.
Labuda, W.
Grondecki, M.
Powiązania:: https://bibliotekanauki.pl/articles/246251.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Atomic Force Microscope
surface topography
roughness
plunger
barrel
injector pump pumping section
Opis:: Precision surface assemblies can be found in the two locations in a fuel system of a diesel engine. These parts are the pumping section in an injection pump and the injector nozzles. In this paper the authors present the results of surface topography measurements of precise surface assemblies of some fuel injectors. The measurements have been made with the atomic force microscope (AFM) NT-206. The results of surface topography measurements were presented in the form of 2D and 3D images and also as surface roughness profiles in some selected cross-sections of the investigated surfaces. It has been also shown cumulative roughness height distribution and roughness height distribution as well as Minkowski volume (first Minkowski functional). After scanning the surface on the atomic force microscope, the obtained data were processed with the SurfaceXplorer ® 1.311 and Gwyddion 2.35 software. The study concerned some new injector nozzles and also injector nozzles after a certain time of operation. The side and the conical precise surface assembly of the injector nozzle body and needle were tested. The atomic force microscope NT-206 allows to perform a surface scan of the sample with maximum dimensions of 32x32 μm and a maximum height of roughness ± 1 μm. Scanned area was divided into 256x256 measurement points, while the measurement was carried out in a static (contact) mode. The results presented in this paper also includes the calculated values of Ra, Sa (roughness average) and Rq, Sq (root mean square roughness) surface roughness parameters and the value of the skewness Ssk (Rsk), kurtosis Sku (Rku) and maximum distance between the lowest valley and the highest peak of investigated surface – Rt. The obtained data allow evaluating the degree and type of wear of tested surfaces on the micro-scale.
Źródło:: Journal of KONES; 2014, 21, 4; 353-360
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Surface topography of operated slide journal micro - bearings used in HDD
Autorzy:: Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/242978.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: atomic force microscope
surface topography
microgrooves
herringbone grooves
micro bearing in HDD
Opis:: In this paper author present results of measurements of slide journal micro-bearings surface topography measured with an atomic force microscope (AFM). The results of measurements of surface topography were presented in the form of surface topography maps, three-dimensional graphs and some examples of selected cross-sections of investigated surface in the form of profile graphs. Measurements of surface topography were made for journals and sleeves of slide journal micro-bearings from personal computers' hard disc drives, with the Atomic Force Microscope NT-206 produced in MTM in Minsk, Republic of Belarus. In this research author used two identical sets of micro-bearings from 2.5" HDD Samsung HM160HI 5400rpm and 3.5" HDD Seagate Barracuda 7200.10 ST380815AS 7200 rpm hard disc drives. First set of those four microbearings worked for a year at rated RPM continuously (i.e. 24 hours a day). Second set of the same micro-bearings also worked for a year at rated RPM, but in intermittent mode (i.e. 15 minutes on, 15 minutes off). The values of profile roughness parameters Ra and Rq and the distance between maximum peak height and maximum valley depth are presented as well. The application SurfaceXplorer registered trademark was used for processing and visualization of the data obtained from AFM NT-206, which besides from generating 2D, 3D and profile diagrams, was used to calculate and draw graph of height distribution. Surface topography of investigated bearings sleeves was also measured using Hommeltester T8000-R60 profilometer. Those measurements give information about micro-grooves dimensions and location. On the surfaces of studied micro-bearings, some micro-grooves can be found in form of herringbone, with depth about 1.5..m and width 150..m. Received information about micro-grooves geometry will allow developing proper theory of hydrodynamic lubrication for micro-bearings with micro-grooves.
Źródło:: Journal of KONES; 2012, 19, 4; 449-456
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Analysis of surface topography of slide journal bearings and micro - bearings
Autorzy:: Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/247394.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: surface topography
atomic force microscope
static contact mode
height distributions of surface roughness
Opis:: In this paper, the author presents the results of measurements of the slide journal bearings and micro-bearings sleeves and journal surfaces. The study was performed with the atomic force microscope (AFM) NT-206. The results of measurements of surface topography are presented in the form of a 2D and 3D map of surface topography and also in the form of profiles for selected cross-sections of examined surfaces. Additionally, the height distributions of surface roughness are presented. The Atomic Force Micsroscope NT-206 allows investigating the surface of sample with maximum scanning area 32μm x 32μm and with the maximum value of roughness ±1μm. The measurements can be carried out in three modes: static (contact) mode, dynamic (non-contact) mode, dynamic intermittent mode. The author used the contact mode. The application of this mode of operation, in the case of samples with a hard surface, for example, the journal of a bearing, enables to obtain a good mapping of the measured surface. The presented in this paper results of surface topography measurements, include the calculated values of the Ra and Rq parameters and also the maximum value of the distance between the lowest and the highest surface inequality. The obtained results allow evaluating the amount and type of wear of researched elements in the micro-scale and they also are useful in the design of such surface layers of co-operating components, in order to obtain optimum tribological properties. When considering the impact of the surface roughness on the change of height of bearing gap, and consequently the change of flow and operating parameters, the information about average distribution of roughness value is required. With such measurements, it is possible to obtain these data. In the presented research the micro-bearings from personal computers hard drives, as well as classic bearings and sleeves, were investigated.
Źródło:: Journal of KONES; 2013, 20, 4; 285-292
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Topografia współpracujących powierzchni łożysk tocznych pomierzona na mikroskopie sił atomowych
Topography of rolling bearings cooperating surfaces measured with an atomic force microscope
Autorzy:: Czaban, A.
Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/189772.pdf
Data publikacji:: 2011
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: mikroskop sił atomowych
łożyska toczne
topografia powierzchni
mikro- i nanochropowatość
atomic force microscope
rolling bearing
surface topography
microroughness
nanoroughness
Opis:: W niniejszej pracy autorzy przedstawiają wyniki pomiaru topografii powierzchni współpracujących elementów w łożyskach tocznych przeprowadzone na mikroskopie sił atomowych (AFM). Badaniu topografii powierzchni poddano elementy toczne (kulki, rolki) oraz bieżnie łożysk tocznych przepracowanych i nowych. Badania zostały przeprowadzone na mikroskopie sił atomowych typu NT-206 firmy MTM z Białorusi. Zaprezentowane w pracy wyniki topografii powierzchni zawierają również wyliczone wartości chropowatości Ra i Rq oraz wartość maksymalnej odległości pomiędzy najniższą a najwyższą nierównością. Dzięki programowi komputerowemu SurfaceXplorer topografię powierzchni przedstawiono w pracy w trzech postaciach: mapy powierzchni, trójwymiarowego obrazu chropowatości powierzchni i profilu przez wybrany przekrój powierzchni. Dodatkowo zaprezentowano również rozkłady wysokości chropowatości. Uzyskane wyniki pozwalają na dokonanie oceny stopnia i rodzaju zużycia badanych elementów w skali mikro, pomogą również w projektowaniu takiej warstwy wierzchniej elementów współpracujących, aby uzyskiwać jak najlepsze efekty tribologiczne.
In this paper authors present measurements results of the surface topography of the cooperating surfaces of rolling bearings conducted with an atomic force microscope (AFM). Measurements of surface topography were made for rolling elements (balls, rollers) and races of non-used and used rolling bearings. In the investigations, the authors used the Atomic Force Microscope NT-206 produced in MTM in Minsk, Republic of Belarus. The presented results of surface topography measurements include calculated values of profile roughness parameters Ra and Rq and the distance between maximum peak height and maximum valley depth. The application SurfaceXplorer was used for processing obtained data and the visualization of surface topography in the three forms: a surface roughness map, a three-dimensional surface topography plot and a profile graph in selected cross-section. Furthermore distribution functions graphs of peaks and valleys heights, tilt and orientation are presented. The results and information about surface topography allows one to evaluate the degree and type of wear in microscale and will help to design surface layers with improved tribological properties.
Źródło:: Tribologia; 2011, 5; 31-38
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Analiza topografii powierzchni panewek mikrołożysk ślizgowych z mikrorowkami
Surface topography analysis of sleeves with micro-grooves of slide micro-bearings
Autorzy:: Miszczak, A.
Wierzcholski, K.
Powiązania:: https://bibliotekanauki.pl/articles/189220.pdf
Data publikacji:: 2012
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: mikrołożyska ślizgowe
mikrorowki na powierzchni panewki
topografia powierzchni
mikroskop sił atomowych
profilometr
slide micro-bearings
micro-grooves on sleeve surface
surface topography
atomic force microscope
profilometer
Opis:: W niniejszej pracy autorzy przedstawili topografię powierzchni panewek mikrołożysk ślizgowych z mikrorowkami zmierzonymi za pomocą mikroskopu sił atomowych (NT-206 produkowanego w MTM na Białorusi) i profilometru (T8000-R60 firmy Hommeltester). Wyniki pomiarów topografii powierzchniprzedstawiono w formie dwu- i trójwymiarowych wykresów oraz przekrojów badanej powierzchni. Topografię powierzchni wykonano dla panewek mikrołożysk ślizgowych stosowanych w 2,5" HDD Samsung HM160HI – 5400 obr/min, 3.5" HDD Seagate Barracuda 7200.10 ST380815AS – 7200 obr/min oraz wentylatorze komputerowym Kama Flow SP0825FDB12H. Rozpatrywane mikrołożyska eksploatowane były przez rok na nominalnych prędkościach obrotowych w dwóch trybach pracy. Pierwszy tryb pracy charakteryzował się pracą ciągłą (tj. 24 godziny). Drugi tryb pracy to tryb przerywany, czyli 15 minut urządzenie było włączone i 15 minut wyłączone. Dzięki wynikom uzyskanym za pomocą profilometru określono wielkość, kształt i rozmieszczenie mikrorowków. Wyniki otrzymane na mikroskopie sił atomowych posłużyły do oceny chropowatości powierzchni w skali mikro i manometrycznej oraz zużycia powierzchni ślizgowych.
This paper presents the sleeve surface topography containing microgrooves measured by virtue of Atomic Force Microscopy NT-206 constructed in MTM Belarus, and a T8000-R60 Hommeltester profile measurement gauge. The topography was generated in 2D and 3D charts for the cross-sections of the considered surface sample. The topography was developed for slide micro-bearing sleeve applied in 2.5" HDD Samsung HM160HI – 5400rpm, 3.5" HDD Seagate Barracuda 7200.10 ST380815AS - 7200 RPM and in computer ventilator Kama Flow SP0825FDB12H. The micro-bearings were exploited for one year at nominal rotational speed for two cases. The first case included continuous operation of 24 hours per day. The second case included interrupted operation, e.g. 15 minutes on and 15 minutes off. By virtue of the results obtained using profile measurement gauge, we can record the quantities, shapes, and location of microgrooves. Moreover, the results obtained using AFM were helpful for roughness assessment and wear surface evaluation.
Źródło:: Tribologia; 2012, 3; 103-110
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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