Fundamental experiments of axial-type BSCCO-bulk superconducting motor model

MODELLING OF ROLLING OF SUPERCONDUCTING Ag/BSCCO TAPE

Numerical simulation of the deformation process during flat rolling of multifilament HTS tapes has been investigated using a commercial FEM program, ELFEN. The numerical models were built up in 2D and 3D using a DruckerPragerKap model for the powder. Three different roll diameters (024 mm, 0 8 5 mm and 0126 mm) have been investigated. It is found that it is possible to perform numerical simulat...

Axial Flux Disc Motor Analysis with Polycrystalline Type II Superconducting Materials

The discovery of the superconductivity phenomenon and understanding of electromagnetic properties of high temperature superconducting (HTS) materials allow the optimization and creation of several applications, such as, electrical machines and drives, fault current applications, or superconducting magnetic energy storage, well described in the literature. Electromechanical conversion devices ba...

Interface instability in the bulk processing of 2223 BSCCO powders

Interface instability (or s̀ausaging’) has been a major problem in the oxide powder-in-tube tape-rolling process. The fast Fourier transform of core instabilities are ® rst performed to study the rolled tapes and to obtain quantitative information on the wavelengths and magnitudes of the nonuniform pro® les. The existing experimental observations are also re-examined and summarized. Treating thi...

Superconducting Microwave Cavity Made of Bulk MgB2

We report the successful manufacture and characterization of a microwave resonant cylindrical cavity made of bulk MgB2 superconductor (Tc ≈ 38.5 K), which has been produced by the Reactive Liquid Mg Infiltration technique. The quality factor of the cavity for the TE011 mode, resonating at 9.79 GHz, has been measured as a function of the temperature. At T = 4.2 K, the unloaded quality factor is ...

Experiments in Fundamental Neutron Physics