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Wyszukujesz frazę "Neslusan, M." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Analysis of surface roughness on bearing steel parts after cutting, superfinishing and burnishing operations
    Autorzy:
    Neslusan, M.
    Grzesik, W.
    Żak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/99566.pdf
    Data publikacji:
    2012
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    hard turning
    CBN tool burnishing
    superfinishing
    surface roughness
    Opis:
    The different technological operation can form the variety of surface with the different functionality. In this paper the surface texture produced by hard turning of a quenched 100Cr6 steel of 62-64 HRC hardness using mixed ceramic (MC) tools and subsequent superfinishing and multipass burnishing operations is characterized by means of a number of roughness parameters. Both conventional and wiper MC cutting tool inserts were employed. The main objective of this study is to improve service properties of the turned surfaces of bearing parts by additional removal and non-removal treatments in order to obtain smoother surfaces with lower surface roughness and better bearing characteristics.
    Źródło:
    Journal of Machine Engineering; 2012, 12, 1; 111-118
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non Destructive Evaluation of Surface Integrity Produced by Milling and Grinding Using Barkhausen Noise Signals
    Autorzy:
    Neslusan, M.
    Kejzlar, P.
    Cllikova, M.
    Micietova, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/971274.pdf
    Data publikacji:
    2015
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    Barkhausen noise
    hard milling
    grinding
    Opis:
    This paper deals with investigation of hard milled and ground surfaces via non destructive Barkhausen noise (BN) technique. The paper compares the raw BN signals, extracted BN features such as effective (rms) values and appearance of hysteresis loops produced by grinding and milling cycles. Information about surface state is correlated and confronted with metallographic observations, SEM readings as well as residual stress state. The paper also discusses the specific character of BN signals (and the corresponding BN features) produced by hard milled surface as a result of the magnetic shape memory effect when the machined surface undergoes severe plastic deformation at elevated temperatures.
    Źródło:
    Journal of Machine Engineering; 2015, 15, 2; 82-91
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Anisotropy in Case-Carburized Surfaces after Hard Turning
    Autorzy:
    Neslušan, M.
    Blažek, D.
    Hrabovský, D.
    Bukovina, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1201826.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper deals with magnetic anisotropy found in hard turned surfaces. The high magnetic anisotropy of the surface after hard turning operations occurs due to severe plastic deformation and high temperature, exceeding the Curie temperature in the cutting zone, followed by rapid cooling. The transformed microstructures of the surface, and stress anisotropy near the surface cause the magnetic anisotropy and magnetic domain reconfiguration. On the contrary, temperatures during grinding usually do not exceed Curie temperature and so the remarkable magnetic anisotropy after grinding operations in not found. The magnetic properties of the studied surfaces are analyzed by Barkhausen noise emission as well as magneto-optical methods. The results of these two techniques are used to study the magnetic anisotropy.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 188-189
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Structure Transformations in Rail Surface Induced by Plastic Deformation via Barkhausen Noise Emission
    Autorzy:
    Neslušan, M.
    Zgútová, K.
    Kolařík, K.
    Šramek, J.
    Čapek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032192.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper reports about magnetic Barkhausen noise emission of the rail surface exposed to long time cyclic plastic deformation. Severe plastic deformation of the rail surface induces remarkable structure transformations and alterations of stress state which contribute to valuable decrease of the Barkhausen noise emission compared to untouched surface of the rail. The paper analyses correlation between the Barkhausen noise signals (as well as extracted Barkhausen noise envelopes) and surface state (expressed in terms of micrographs, microhardness readings and residual stresses). This study would contribute to a possible concept for preventing unexpected rails deformation (or cracking) due to their thermal dilatation via the Barkhausen noise technique.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 1099-1101
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Evaluation of Residual Stresses and Structure Transformations Induced in Soft Steel after Turning
    Autorzy:
    Čilliková, M.
    Dubec, J.
    Neslušan, M.
    Mičietová, A.
    Blažek, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199710.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper deals with the stress and temperature induced microstructure transformations in a soft bearing steel 100Cr6 after turning operation. Investigation is carried out through a technique based on Barkhausen effect. Evaluation of surface integrity via structure transformations, X-ray diffraction as well as microhardness inspection is carried out as well. Surface integrity is investigated with the respect to the variable tool wears and consequent mechanical and thermal loads applied on the inspected surfaces. Different surface microstructures caused by the mechanical and associated thermal aspects of the surface formation are discussed and correlated with the parameters obtained from the measured Barkhausen emissions.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 60-61
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisotropic Magnetic Properties of MilledBearing Steel Surface
    Autorzy:
    Mičica, M.
    Blažek, D.
    Hadzima, B.
    Pištora, J.
    Neslušan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192261.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Bb
    75.60.Ej
    78.20.Ls
    Opis:
    For many reasons, the steel surfaces are machined to obtain required physical properties. Suitable methods are required for the management and control of the manufacturing processes, which are simultaneously sufficiently robust and sensitive. The non-destructive testing methods, sensitive to the magnetic properties of the surface, are very suitable for this purpose. The Barkhausen noise (BN) measurement, which reveals the discontinuous movement of the magnetic domains in the thin surface layer during magnetisation reversal process is very robust, while magneto-optical Kerr effect (MOKE) method, using polarized light for orientation measurements of magnetic domains at the surface, is very sensitive and provides detailed information about hysteresis curves (HC) of the materials. In this contribution our results obtained on the milled 100Cr6 bearing steel are presented. These properties were obtained by MOKE laboratory measurements and bring very interesting facts about the magnetisation reversal process, which depends on the orientation of the magnetic field with respect to the cutting direction. Our results clarify the strong anisotropy of BN, which is observed during the industrial application of this method.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1421-1423
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magneto-Structural Anisotropy of Hard Milled Surface
    Autorzy:
    Mičietová, A.
    Uríček, J.
    Blažek, D.
    Neslušan, M.
    Kejzlar, P.
    Čilliková, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032778.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper deals with investigation of hard milled surface as a surface undergoing severe plastic deformation at elevated temperatures. This surface exhibits quite remarkable magnetic anisotropy (expressed in term of the Barkhausen noise) and differs from ground surfaces. The main reason can be viewed in specific structure and the corresponding domains configuration formed during rapid cooling following after surface heating. Domains are not randomly but preferentially oriented in the direction of the cutting speed at the expense of feed direction. The Barkhausen noise signals (measured in two perpendicular directions such as cutting speed and feed direction) indicate that the mechanism of the Bloch wall motion during cyclic magnetization in hard milled surfaces differ from surfaces produced by grinding cycles or the raw surface after heat treatment.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 1087-1089
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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