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A comparative study of the effect of electrical fields on bifurcation phenomena appearing in biaxially stretched slabs of Mooney-Rivlin and Ogden materials is described. The main conclusion of the analysis is that the stretch ratio at which the bifurcation appears crucially depends on both, the configuration of the system sample-electrodes, and the model used.
Solid-insulated distribution equipment has several design advantages when considering benefits for environmental protection, maintenance-free operation, compact-design, light weight etc. In such equipment, interfaces between different solid insulating materials are generally inevitable. The interface, depending on the placement in the equipment, is not only subjected to high electric field stress...
An experimental set-up was designed for testing the impact of adhesion defects at interfaces between silicone rubber and epoxy in composite insulators. Test samples were aged in this set-up by discharges appearing under a presence of tangential electric field at the interfaces exposed to humid conditions. This combination of stresses simulated realistic conditions, in which ageing at the interface...
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