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In this paper, the zirconia toughened alumina (ZTA) ceramics with different content of zirconia were fabricated. The dielectric relaxation properties were investigated by using thermally stimulated depolarization current (TSDC) method. The observed TSDC peaks were attributed to defect dipole polarization, and the related activation energies were evaluated by a fitting method. The influence of zirconia...
In this paper, the zirconia toughened alumina (ZTA) ceramics were fabricated by pressureless sintering method. Dielectric relaxation characteristics of both alumina and ZTA ceramics were investigated using thermally stimulated depolarization current (TSDC) method and the relaxation parameters were calculated from the experimental TSDC curves. In addition, the relationship between zirconia doping and...
This paper describes a verification tests for qualified DTS system. The verification tests firstly focused on power cable surface temperature measurement accuracy, positional accuracy and spatial resolution accuracy. Then the power cable conductor temperature calculation which was carried out by DTS system was also verification tested. The 220kV power cable laying in tunnel and applying different...
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