Browsing by Author "Semeniuk, Orest"

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    Research of wear resistance of high-temperature coverings at fretting corrosion
    (National Aviation University, 2022-11) Semeniuk, Orest; Семенюк, Орест
    Working conditions of turbine blades modern aviation gas turbine engines (GTE) characterized by high levels of current static loads, wide range of operating temperatures, high speed of rotation, and as a result – high vibroloading. Given the general trend towards the growth of inter-repair and general technical resources are increasing the increase of traction characteristics becomes more significant GTE, which causes an increase in the limits of permissible loads and operating temperatures of blades. To reduce the vibroload, the blades are tightened in the upper part on the zigzag surfaces. As a result of vibro displacement is intense wear contact the surfaces of the shelves as a result of the development of fretting-corrosion that leads to increased wear and premature release parts of the system. In addition, the destruction due to the occurrence cyclic displacements in a nominally fixed connection. The shanks of the blades are also subjected. The purpose of the study was to find such a material, which at higher operating temperatures should have higher values wear resistance.