Registration Number
0212U008275,
0111U003992
, R & D reports
Title
Theoretical - experimental study behavior of materials and structural elements under complex influences
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Head
Grygorchak Ivan Ivanovych,
Registration Date
10-12-2012
Organization
Lviv Polytechnic National University
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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
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Бобицький Я.В.
Григорчак Іван Іванович
Костробій П.П.
Палаш В.М.
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2020-04-02
