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Browsing by Subject "angle of electric phase displacement"

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    Item type:Article, Access status: Open Access ,
    Badania kąta przesunięcia elektrycznego dla próbek piasku i bentonitu
    (2010) Krochmal, Janusz Kazimierz
    A prototype research stand based on modern impedance meter Hioki 3522 type was made in the Laboratory of Oil Engineering, Faculty of Drilling, Oil and Gas, AGH-UST. It was used for realization of a research project no. N524 348335 within which phase angle j of modeled fine sand and bentonite samples was tested for frequencies available with the meter, i.e. 0.001 Hz to 100 kHz in air-dry conditions. These media have different water sorption qualities; being strongly polar, water influences electrical polarization. The results of these experiments confirm results expected on the basis of previous tests. Significant differences were revealed between frequencies corresponding to the observed maximum value of angle j for fine sand and bentonite.