THEORETICAL ESTIMATION OF FILM ELECTRIC HEATER USEFUL LIFE DENSITY DISTRIBUTION
Theoretical expression function of the density distribution of film electric heater useful life was found, which makes it possible to determine any у-percent useful life of device. To get the result it is necessary to know the parameters of speed and character of changing the breakdown voltage in time. The indicated parameters can be determine by accelerated bench test with the attraction of method the theory of the active planning experiment