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Information × Registration Number 0225U001652, (0124U000330) , R & D reports Title Computational models of piezoactive crystalline and quasi-crystalline composites with cracks at the material interfaces. popup.stage_title Дослідження довільної неперіодичної системи міжфазних колінеарних тріщин різної довжини у п’єзоматеріалі. Head Loboda Volodymyr V., д.ф.-м.н. Registration Date 04-02-2025 Organization Oles Honchar Dnipro National University popup.description1 Finding the critical parameters of interface cracks in quasicrystalline composites with piezoelectric properties, as well as piezoelectric and piezoelectric compounds with taking into account the contact of the crack faces. popup.description2  The purpose of the study is to analyze the influence of such factors on the fracture parameters of a partially electroded and partially isolated crack in a homogeneous piezoelectric material as the length of the electroded zone and its location, the direction of the electric field and the direction of polarization of the piezoelectric material; for an electrically permeable crack, obtain expressions for displacements, electric potential, stresses and electric induction at the interface of materials, determine the length of the contact zone and the stress intensity coefficient, investigate an electrically isolated crack with the addition of a concentrated charge and show the difference from the electrically permeable case in stress intensity and electric induction. Research methods - analytical and numerical methods. The main scientific results consist in the developed numerical-analytical algorithm for determining the parameters of the fracture of an interfacial crack in a piezoelectric bimaterial with an electrically permeable contact zone and the absence of mechanical friction. The scientific novelty of the obtained results is as follows: the plane-deformed state of a partially electroded and partially isolated crack in a homogeneous piezoelectric material was investigated, the electroded zone can be located on both sides of the crack or on one of the sides, mechanical tensile stresses orthogonal to the crack and an electric field orthogonal or parallel to the crack are given at infinity, the formation of mechanical contact zones between the crack sides is assumed; an interfacial crack in a piezoelectric bimaterial with an electrically permeable contact zone and the absence of mechanical friction was also investigated, and a significant influence of the polarization direction on the dimensions of the contact zone and the stress intensity coefficient was shown. Product Description popup.authors Adlutskyi Viktor Ya. Hart Eteri L. Herhel Iryna Yu. Dziuba Oleksandr A. Komarov Oleksandr V. Loboda Volodymyr V. popup.nrat_date 2025-02-04 Close