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Information × Registration Number 0214U007013, 0112U002776 , R & D reports Title Develop a methodology to determine the stress-strain state and diagnosing layered composites under static and dynamic loads by means of speckle-metrology popup.stage_title Head Ivanytskij Yaroslav, Registration Date 02-04-2014 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Based on the methods ESI and DCS for measuring 3D displacements developed an experimental method for determining the normal to the surface of the deformable layered carbon fiber movements in the vicinity of stress concentrators. On the basis of this technique is a method of detection of defects in samples of layered carbon fiber for maximum equilibrium during acoustic sensing. A design model using the finite element method (FEM) and experimental methods to determine the stress-strain state in the contact zone connection "composite-metal". Compared to field strains crumple zones built using FEM and obtained by the CA in the vicinity of stress concentrators. The problem of diffraction of elastic SH-waves on defects such as crack, located in the plate parallel to its surface. The problem is reduced to the solution of an infinite system of linear algebraic equations (LAE). Characteristic feature of the resulting system is exponential damping of the matrix elements with increasing amounts of normal waves are taken into account. The result obtained solution LAE dependence of transformation modes on the crack tip as functions of the geometrical parameters of the structure and physical and mechanical properties of the material of the plate. Product Description popup.authors Бойко Василь Миколайович Войтко Мирон Васильович Вороняк Тарас Іванович Гвоздюк Микола Марянович Гембара Оксана Володимирівна Голинський Іван Стахович Дрималик Андрій Романович Кметь Аркадій Борисович Кулинич Ярослав Петрович Куриляк Дозислав Богданович Куць Олександр Григорович Максименко Олександр Парфенович Муравський Леонід Ігорович Назарчук Зіновій Теодорович Сахарук Олександр Миколайович Чепіль Ольга Ярославівна popup.nrat_date 2020-04-02 Close