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Failure criteria for electromagnetic materials

Chudzicka-Adamczak M.

Vibrations in Physical Systems

2006

Vol. 22

101--106

The vortex dynamics in HTc superconductor in external magnetic field

Sosnowski J.

Journal of Technical Physics

2005

Vol. 46, no 4

245-255

The penetration of magnetic induction into HTc superconductors has been considered taking into account the layered structure of these materials. For magnetic field parallel to the planes a one-dimensional penetration has been considered, while in perpendicular magnetic field it is a two-dimensional problem. The flux creep equation has been considered, whose solution was confirmed by experimental data measured on an Y-Ba-Cu-O sample. The magnetic diffusion equation has been solved for a description of the magnetic induction profiles in an increasing external magnetic field. The dynamic anomalies of the current-voltage characteristics have been then predicted, in agreement with experimental observations. The model taking into account the influence of the vortex-pinning center interaction on the magnetic field dependence of the critical current, has been also applied successfully for description of the anomalies.

Czy wodomierze ulegają zużyciu

Tuz P. K.

Rynek Instalacyjny

2004

Nr 7-8

87--89

Artykuł zawiera wnioski z badań przeprowadzonych nad metrologią wodomierzy mieszkaniowych jednostrumieniowych DN 15 w klasie metrologicznej B. Wśród przebadanych wodomierzy były nowe produkty, ale również te z nieaktualną cechą legalizacyjną.

Non-Newtonian flows over an oscillating plate with variable suction

Hayat T., Abbas Q., Khan M., Siddiqui A. M.

Archives of Mechanics

2003

Vol. 55, nr 4

327-344

The flow of second order fluid due to an oscillating infinite plate in the presence of a transverse magnetic field for two forms of time-depend suction are considered. The analytical solution of the governing boundary value problems are obtained. It is found that an external magnetic field and normal stress coefficient on the flow has opposite effects.