Fabrication and prediction techniques for FGM (functionally graded materials) application to solid insulators

For the size reduction of electric power equipment, electric field stress around solid insulators is to be increasing, and carefully be considered. Application of FGM (functionally graded materials) will be an effective solution for this concern. For practical use of FGM, fabrication feasibility of permittivity graded materials and their prediction are very important. In this paper, we investigated permittivity controlling techniques for FGM from both an experimental approach and numerical simulation. Calculated results are well agreed with the experimental ones. Finally, effective techniques for FGM application to gas/solid composite insulation system can be obtained.