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Information × Registration Number 0210U003554, 0108U006471 , R & D reports Title Calculation models of fatigue crack grows under variable non-cyclical loading popup.stage_title Head Andreykiv Olexandr Yevgenovych, Registration Date 09-02-2010 Organization Ivan Franko National University of Lviv popup.description2 An analysis and synthesis of researches of distribution of fatigue cracks is conducted in resiliently plastic bodies at the cyclic loadings. Mathematical models are built for determination of period to critical growth in the solids of cracks at the variable uncyclic loadings. Functional dependences are got for determination of speed of distribution of crack. A mathematical model is built for determination of periods to critical growth of cracks at the uncyclic loadings. Mathematical models are built thus tested the experimental information known in literature. Optimization of operating parameters of oil pipeline is conducted with the purpose of optimum resource of pipe. Product Description popup.authors Андрейків Олександр Євгенович Слободян Микола Степанович Турчин Ігор Миколайович popup.nrat_date 2020-04-02 Close