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Wyszukujesz frazę "magnetic measurements" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Determination of the absolute values (D, H, T) of the geomagnetic field at secular points in the Hornsund area, Spitsbergen, 1979
    Autorzy:
    Koblański, Andrzej
    Małoszewski, Stanisław
    Śliz, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2057328.pdf
    Data publikacji:
    1985
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Spitsbergen
    magnetic measurements
    Źródło:
    Polish Polar Research; 1985, 6, 3; 357-364
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some results of magnetic mapping in the Fuglebergsletta area at the northwest edge of Hornsund Fiord, Spitsbergen
    Autorzy:
    Koblański, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2057286.pdf
    Data publikacji:
    1985
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    interpretation of magnetic measurements
    Źródło:
    Polish Polar Research; 1985, 6, 4; 515-525
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Selected Parameters of Organic-Inorganic Hybrid Membranes Based on Various Polymers and Nd-Fe-B Fillers
    Autorzy:
    Rybak, A.
    Kaszuwara, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/352783.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    organic-inorganic hybrid membranes
    magnetic measurements
    rheological parameters
    mechanical properties
    gas separation
    Opis:
    In this paper magnetic organic-inorganic hybrid membranes based on EC, PPO polymer matrices and various magnetic powder microparticles were synthesized and studied. Constant pressure permeation technique and the Time Lag method were used to obtain the gas transport coefficients. The mechanical, rheological and magnetic parameters of magnetic hybrid membranes were examined. It was found that their separation and gas transport properties (D, P, S and α) were improved with the decrease in powder particle size and the increase of membrane’s remanence, saturation magnetization and magnetic particle filling. The increase of the magnetic powder addition and a decrease of its granulation improved also mechanical and rheological parameters of the tested membranes. This improvement also had a positive effect on their gas separation properties and their potential usage in the future.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 1825-1832
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consideration of the spatial orientation of magnetic field quantities and tensile mechanical stress in the Finite Element Analysis of electrical machines
    Autorzy:
    Schauerte, Benedict
    Xiao, Xiao
    Jansen, Kevin
    Hameyer, Kay
    Powiązania:
    https://bibliotekanauki.pl/articles/2172800.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    magnetic measurements
    magneto-mechanical coupling
    vector hysteresis
    non-oriented electrical steel
    Villari effect
    Opis:
    Due to speed-dependent centrifugal forces, the support of the torque, static mechanical stress introduced by manufacturing processes the laminated core of rotating electrical machines is exposed to considerable mechanical stress. The resulting stress distribution changes the magnetic properties of the electrical steel. To take this into account, a magnetization model is constituted on the basis of vector magneto-mechanical measurements that include the magnetic permeability as a function of the mechanical stress and the angle between magnetization - and the maximum principal stress direction. Subsequently, the model is integrated into the finite element simulation of a permanent magnet excited synchronous machine at different rotational speeds.
    Źródło:
    Archives of Electrical Engineering; 2022, 71, 4; 949--961
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Leak Detection in Waterworks: Comparison Between STFT and FFT with an Overcoming of Limitations
    Autorzy:
    Lay-Ekuakille, A.
    Griffo, G.
    Visconti, P.
    Primiceri, P.
    Velazquez, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/220719.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    uncertainty
    measurements
    magnetic sensors
    leak detection in pipelines
    regularization
    Opis:
    Detection of leakages in pipelines is a matter of continuous research because of the basic importance for a waterworks system is finding the point of the pipeline where a leak is located and - in some cases - a nature of the leak. There are specific difficulties in finding leaks by using spectral analysis techniques like FFT (Fast Fourier Transform), STFT (Short Term Fourier Transform), etc. These difficulties arise especially in complicated pipeline configurations, e.g. a zigzag one. This research focuses on the results of a new algorithm based on FFT and comparing them with a developed STFT technique. Even if other techniques are used, they are costly and difficult to be managed. Moreover, a constraint in the leak detection is the pipeline diameter because it influences accuracy of the adopted algorithm. FFT and STFT are not fully adequate for complex configurations dealt with in this paper, since they produce ill-posed problems with an increasing uncertainty. Therefore, an improved Tikhonov technique has been implemented to reinforce FFT and STFT for complex configurations of pipelines. Hence, the proposed algorithm overcomes the aforementioned difficulties due to applying a linear algebraic approach.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 4; 631-644
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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