Search academic texts

Information × Registration Number 0212U008275, 0111U003992 , R & D reports Title Theoretical - experimental study behavior of materials and structural elements under complex influences popup.stage_title Head Grygorchak Ivan Ivanovych, Registration Date 10-12-2012 Organization Lviv Polytechnic National University popup.description2 Based on the entropy principle in the selection of materials for storage devices and energy conversion bodied in difficult conditions is selected and experimentally substantiated a new range of materials that do not contain highly toxic components. Found crystalline phases raznomernogo structuring for efficient generation of electric power in difficult conditions. Surface potential for the metal tip is modelled within the spherical jellium model. The eigenfunctions and eigenvalues for this model of the surface potential are found. The upper energy level of electrons and electron density distribution of the metal tip are calculated. Advantages and expedience of application of optical fiber with the Bragg's gratings for the continuous monitoring of build constructions was validated. The influence of temperature on the reflection coefficient of the grating on optical fiber core was investigated. The high sensitivity of these sensors to mechanical and thermal loads had been shown. Theoretical research on establishing the distribution of temperature fields andresidual mechanical stresses in the vicinity of welded joints of aluminum alloys are made of electron-beam welding. This will improve the effective methods of technical diagnostics of actually existingstructural elements. The analytical expressions for assessment of the nature and distribution oftemperature fields in the area termodeformatsiynoho influence on electron beamwelding of aluminum plates. Product Description popup.authors Бобицький Я.В. Григорчак Іван Іванович Костробій П.П. Палаш В.М. popup.nrat_date 2020-04-02 Close