Investigation of the influence of boundary conditions and degradation factor of the surface layer on the GTE structural elements stress-strain state

Abstract

The influence of the boundary conditions of the nonstationary thermal cyclic loading and degradation of the material surface layers on the stress-strain state of the material of the wedge-shaped specimens, which model the gas-turbine engine blade edge, is shown using the methods of physical and mathematical modeling with the presence of crack-type defects. The necessity of the investigation of structural changes and properties of the material, thermal and thermal-deformed state of the material is demonstrated to determine the possibilities of safe extension of the given lifetime of the equipment and assurance of efficiency as well as reliability of energy systems.

Authors and Affiliations

Leonid Kravchuk, Evgenii Zadvornyi, Kostiantyn Buiskykh, Mykola Feofentov, Svitlana Kyselevska

Keywords

Related Articles

Determination of the structural steels damage kinetics under non-stationary loading

The article presents adapted techniques which make possible to assess the damage of steels at high cyclic fatigue under the amplitudes varying according to the random law. The method for material damage assessment is bas...

Synthesis of control for family of pseudolinear differential systems

The work is devoted to development of methods of synthesis control for families of pseudolinear controlled systems. Construction of control in the form of static linear reverse connection foresees allocation of phase coo...

The generalized model of interaction of ultrasonic sh-polarization wave with 2d strain field in a plane layer

Within the framework of previously developed mathematical model of small elastic perturbations propagation in homogeneously strained elastic continuum a stationary problem for interaction of a narrow ultrasonic beam of S...

Computer modelling characteristics of ballast choke of the fluorescent lamp

Basing on the analysis of existing structures of the planar system induction coils authors proposed to fill the space between the turns of the coil by the ferromagnetic material. This design will increase the magnetic in...

Bending of isotropic plate with square washer and stiff straight crack taking into account crack sides contact area width

As a widely used industry lamellar structural elements, the strength of which are highly dependent on the type of defects cracks dramatically reduce the carrying capacity and operation design. As you know, these crack-li...

Download PDF file
  • EP ID EP280375
  • DOI 10.33108/visnyk_tntu2017.04.097
  • Views 69
  • Downloads 0

How To Cite

Leonid Kravchuk, Evgenii Zadvornyi, Kostiantyn Buiskykh, Mykola Feofentov, Svitlana Kyselevska (2017). Investigation of the influence of boundary conditions and degradation factor of the surface layer on the GTE structural elements stress-strain state. Вісник Тернопільського національного технічного університету, 88(4), 97-104. https://europub.co.uk./articles/-A-280375