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32 Вісник НТУУ “КПІ”. Серія ПРИЛАДОБУДУВАННЯ. – 2017. – Вип. 53(1) О. І. Shevchenko Main Astronomic Observatory of NAS of Ukraine, Kyiv, Ukraine MODEL OF ULTRASOUND’S PASSING IN THREE-LAYER PLATE WITH USED OF ELECTRO-ACOUSTIC ANALOGY In the article resulted chart of passing and measuring of ultrasound through the probed standard by means of two transformers – source and receiver ultrasound. A layout of standard and transformers chart is resulted in the model of quadripoles. The use of electro-acoustic quadripoles in practical work allows to apply methods and theory of electric chains. The dimensions of piezoelectric permanent in the systems SIS are resulted and CGC, disparities of dimension of physical sizes at different approaches in determination of physical sizes in an electro-thermal analogy. The observance of dimension is analyzed in equalizations of resiliency for piezocrystal depending on the values of physical sizes in an electro-acoustic analogy. Equalization of measuring is resulted.