The article proposes a new method for the non-destructive measurement of one of the most important maximum permissible parameters of surge current power thyristors. The method is based on continuous control at each moment of time of the dynamic capacitance, the changing in the nature of the time dependence of which predicts the destruction of the semiconductor structure.
The article shows one of the factors influencing the formation of corrosion of hollow reinforced concrete structures — leakage currents in insulators. The development of corrosion depends on the amount of electricity that has passed through the reinforced concrete. A method for controlling the corrosion state by changing the color parameters on the video image of the reinforced concrete surface is proposed. A full-scale experiment is carried out on samples simulating various degrees of corrosion, as well as on a sample with an unknown level of corrosion. The images are obtained using an industrial endoscope.
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