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Information × Registration Number 0217U000662, 0114U002146 , R & D reports Title Development of a methodology of comprehensive diagnosis of construction materials, taking into account the conditions of their operation popup.stage_title Head Nazarchuk Zinoviy, Registration Date 20-02-2017 Organization State western scientific center NAS of Ukraine and MES of Ukraine popup.description2 It is shown that the acoustic emission method can be widely used to study the processes accompanying corrosion and hydrogen cracking of materials. The given method allows one to determine more precisely the characteristics of static crack-strength of steels due to the possibility of detection of hidden stages of corrosion and hydrogen destruction. We obtained a mathematical model for determining the components of the stress state at any point of a butt weld pipe connection made of steel prone to tempering. Principles for modelling the optical waves propagation in waveguides with Bragg lattices are developed and the obtained wave equation is solved by the method of perturbation. The change of the coefficient of putting through and reflecting from the lattice in the optical fiber core with changing the effective refraction index and the lattice period is studied. The distribution of an electrostatic potential for different values of stress of an external electric field is studied. Far from the metal surface, the stress of the electrostatic field is linear. In the absence of an external electric field, the electrostatic potential becomes constant. The methodic of the computer simulation of thermomechanical processes in electrically conductive bodies at the high induction treatment for a more adequate prediction of the actual behaviour of electrically conductive solids in a wide temperature range is proposed. The problem of the field diffraction of a flat sound wave on a hard and soft semi-infinite cone with a cut top at an axial irradiation with providing all the necessary conditions and the assigned accuracy is solved. The characteristics of scattering the semi-infinite soft and hard cones in a wide range of geometric parameters and frequencies changes are investigated. Product Description popup.authors Ігнатюк Василь Васильович Бзовська Ірина Степанівна Дідух Марія Григорівна Дробенко Богдан Дем'янович Захарчук Євгеній Володимирович Зинюк Олег Дмитрович Клим Богдан Петрович Корній Валентина Василівна Котерлин Галина Михайлівна Куриляк Дозислав Богданович Кушнір Роман Михайлович Мриглод Ігор Миронович Назарчук Зіновій Теодорович Почабський Євген Петрович Ригайло Святослава Яківна Романюк Роман Романович Скальський Валентин Романович Хомин Марія Григорівна Шиян Ярослав Володимирович popup.nrat_date 2020-04-02 Close