Title :
Measurement of electric charges at the interface between two dielectric layers using an electro-acoustic transducer technique
Author :
Takashima, Masatoshi ; Soda, Keiichi ; Takada, Tatsuo
Author_Institution :
Musashi Inst. of Technol., Tokyo, Japan
fDate :
4/1/1988 12:00:00 AM
Abstract :
An acoustic-electric field meter was developed that can measure electric field strength within two dielectric insulating layers. The meter was used for the measurement of accumulated charges at the interface between double insulating layers. For an accurate measurement of an electrical field in insulating materials, two experimental conditions were required: (1) an optimum electrode thickness, and (2) the optimum conversion constant from acoustic transducer pressure due to the electrical signal. A compensation equation to calculate the amount of accumulated charges for various thicknesses of insulating materials is presented. It was found that the amount of accumulated charge and the accumulation rate strongly depended on the condition of the interface between two dielectrics whether a metal electrode was present or not
Keywords :
acoustoelectric transducers; charge measurement; electric field measurement; accumulation rate; acoustic transducer pressure; acoustic-electric field meter; charge accumulation; charge measurement; compensation equation; double insulating layers; electrical field in insulating materials; electro-acoustic transducer technique; experimental conditions; interface between two dielectric layers; measurement of accumulated charges; metal electrode; optimum conversion constant; optimum electrode thickness; thicknesses of insulating materials; Acoustic materials; Acoustic measurements; Current measurement; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Electric variables measurement; Electrodes; Pressure measurement; Thickness measurement;
Journal_Title :
Electrical Insulation, IEEE Transactions on
