On the Appiication of a Resonance Circuit to Assess the Presence of Pores in the Structure of the Compound

The purpose of research is to determine the possibility of using a resonant circuit to assess the presence of pores in the structure of a compound for explosion-proof equipment, this direction is one of the most promising at present.

Methods. In this work, a theoretical description of the occurrence of resonance in the oscillatory circuit is given, which indicates the possibility of using the resonant control method to determine the presence of pores in the structure of the compound. To determine the presence of voids in the compound, electrical parameters were examined by considering the electrical circuit. Based on the change in the resonant frequency of the RLC circuit, the possibility of a value judgment on the presence of pores in the structure of the casting compound is considered. Based on the change in the amount of dielectric substance between the plates of the capacitor, the change in its capacitance, the change in the resonant frequency is established.

Results. The experimental confirmation of the theoretical description, which is presented in the work, proved the correctness of the information presented. The authors describe the method for evaluating the presence of pores in the structure of the compound, developed by the authors, and the description of the equipment used for the developed method. A series of measurements was made to determine the frequency at which the resonance phenomenon is observed. A study of real samples of the compound was carried out. In the course of the experimental work, the dependence of the capacitance of the capacitor on the amount of the dielectric substance was established. Based on the knowledge about the capacitance of the capacitor, the possibility of a value judgment on the presence of pores in the structure of the compound used as a dielectric in a capacitor installed in an oscillatory circuit has been confirmed.

 Conclusion. Based on the results of the work carried out, conclusions were drawn about the use of the resonance control method to assess the presence of pores in the structure of the compound. The dependence of the change in the resonance frequency arising in the oscillatory circuit on the homogeneity of the compound substance used as a dielectric in the capacitor has been established and proved.

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