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2012 A.A. Inozemtsev1, M.Sh. Nikhamkin2, A.V. Ilyinykh2, A.M. Ratchiyev1 JSC Aviadvigatel, Perm Perm National Research Polytechnical University The technique and results of experimental research the low-cyclic fatigue (LCF) and cyclic crack resistance of granulated nickel alloy are described .





Two variants of loading cycle form are compared: triangular and Mshaped, characteristic for disks of aviation engines turbines. Quantitative estimates of influence the form of loading cycle on cyclic durability and growth rate of fatigue cracks and the empirical ratios describing this influence are received. Satisfactory convergence of experimentally received curve LCF for the M-shaped loading cycle with calculated curve of LCF on model of linear summation is shown .

Key words: gas-turbine engine, turbine disk, cyclic resource, growth of fatigue cracks, linear summation of damages ___________________________________________________________________________________________________

Alexander Inozemtsev, Doctor of Technical Sciences, Chief Designer; Mikhail Nikhamkin, Doctor of Technical Sciences, Professor. E-mail: nikhamkin@mail.ru; Artem Ilyinykh, Candidate of Technical Sciences, Senior Lecturer; Aleksey Ratchiev, Engineer. E-mail: ratchiev@avid.ru




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