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Materials Science

, Volume 54, Issue 6, pp 883–888 | Cite as

Stressed State of Nozzles with Local Extractions of Defects

  • B. DrobenkoEmail author
  • S. F. Budz
  • І. S. Budz
  • І. S. Kuz’
Article

We study the complex stress-strain state of nozzles with extractions of defects on the inner surface under the operating conditions. On this basis, we construct functional dependences between the depth, length, and width of extraction made for the evaluation of its geometric parameters for which the operating stresses in the nozzle do not exceed permissible stresses. The obtained dependences have been used at the Burshtyn Thermal Power Plant to develop a technology of repair works on the power-generating equipment by extracting samples of the material near defective areas.

Keywords

strength fracture of materials service life power-generating equipment 

References

  1. 1.
    S. F. Budz, B. D. Drobenko, and V. S. Mikhailishin, Computer Simulation of the Thermoelastoplastic Behavior of Mechanical Systems [in Russian], Preprint 34-89, Institute for Applied Problems in Mechanics and Mathematics, Academy of Sciences of Ukr. RSR, Lviv (1992).Google Scholar
  2. 2.
    O. R. Hachkevych and B. D. Drobenko, “Specific features of the numerical solution of coupled problems of determination of electromagnetic, thermal, and mechanical fields in deformable thermally sensitive conducting bodies under quasistationary electromagnetic loads,” Mat. Met. Fiz.-Mekh. Polya,50, No. 3, 166–177 (2007).Google Scholar
  3. 3.
    O. R. Hachkevych and B. D. Drobenko, “Thermomechanics of magnetized conducting heat-sensitive bodies,” in: A. I. Burak and R. M. Kushnir (editors), Modeling and Optimization in the Thermomechanics of Conducting Inhomogeneous Bodies [in Ukrainian], Vol. 4, Spolom, Lviv (2010.Google Scholar
  4. 4.
    L. Ya. Liberman and M. I. Peisikhis, Properties of Steels and Alloys Used in Boiler and Turbine Manufacturing. Guidelines [in Russian], Vol. 1, Polzunov ONTI TsKTI, Leningrad (1966).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • B. Drobenko
    • 1
    Email author
  • S. F. Budz
    • 1
  • І. S. Budz
    • 2
  • І. S. Kuz’
    • 3
  1. 1.Pidstryhach Institute for Applied Problems in Mechanics and MathematicsUkrainian National Academy of SciencesLvivUkraine
  2. 2.“L’vivs’ka Politekhnika” National UniversityLvivUkraine
  3. 3.I. Franko Lviv National UniversityLvivUkraine

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