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Power Technology and Engineering

, Volume 52, Issue 2, pp 162–167 | Cite as

Accumulation of Corrosion-Fatigue Damage by Hydro Turbine Equipment Elements

  • L. I. Domozhirov
Article
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Questions are considered for evaluating material damage and substantiation of life on the basis of corrosion-fatigue crack development kinetics. Linear fracture mechanics are used for this approach suitable for large and small cracks, which makes it possible to include a nominal initial crack l0 among basic material properties. Calculated curves for fatigue in an aqueous medium based on 1010 cycles, and the curves for fatigue damage accumulation corresponding to 106 and 1010 cycles are provided for specimens with a cross section of 180X200 mm of steel 06Kh12N3D in rolled and cast conditions. Results are provided for evaluation of the life of during action of two-stage loading and repeated overloading.

Keywords

material damageability fatigue crack development aqueous medium fracture mechanics fatigue damage accumulation life transient loading 

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References

  1. 1.
    V. V. Bolotin, Machine and Structure Life [in Russian], Mashinostroenie, Moscow (1990).Google Scholar
  2. 2.
    V. P. Kogaev, Strength Calculations with Stresses Varying in Time [in Russian], Mashinostroenie, Moscow (1977).Google Scholar
  3. 3.
    V. P. Bagmutov and A. N. Savkin, “Comparative analysis of models for accumulation of dissipated surface with irregular variable damage accumulation,” Probl. Prochn., No. 6, 95 – 104 (2009).Google Scholar
  4. 4.
    A. G. Mazepa, E. A. Grin’, and T. I. Morozoova, “Study of crack growth kinetics under conditions of symmetrical and pulsating loading,” Probl. Prochn., No. 11, 23 – 27 (1981).Google Scholar
  5. 5.
    L. I. Domozhirov, “Application of linear fracture mechanics in order to describe fatigue crack growth rate with high load levels,” Probl. Prochn., No. 4, 10 – 15 (1986).Google Scholar
  6. 6.
    L. I. Domozhirov, Determination of Multicycle Fatigue Characteristics for Materials from the Point of View of Clarifying Linear Fracture Mechanics Approaches. Author’s Abstr. of Doctoral Thesis [in Russian], Moscow (1998).Google Scholar
  7. 7.
    M. N. Makhutov and L. I. Domozhirov, “Two-parameter failure criteria connected with refinement of plastic zone dimensions,” Zavod. Lab., 53(1), 54 – 59 (1989).Google Scholar
  8. 8.
    L. I. Domozhirov and N. A. Makhutov, “Crack hierarchy in cyclic fracture mechanics,” Mekhan. Tverdogo Tela, No. 5, 17 – 26 (1999).Google Scholar
  9. 9.
    L. I. Domozhirov, “Optimization of st4rength reserve factor for large components taking account of small cracks,” Tyazh. Mashinostr., No. 2, 35 – 39 (2006).Google Scholar
  10. 10.
    L. I. Domozhirov, “Development of a fatigue damage model for materials on the basis of contemporary achievements of linear fracture mechanics,” Tyazh. Mashinostr., No. 9, 8 – 14 (2014).Google Scholar
  11. 11.
    MR 125-02–95. Rule for Comprising Calculation Schemes and Determination of Loading Parameters for Structural Elements with Revealed Defects [in Russian], TsNIITMASh, Moscow (1996).Google Scholar
  12. 12.
    L. I. Domozhirov, “Determination of fatigue resistance characteristics in a corrosive medium on large loading bases,” Zavod. Lab., 68(10), 41 – 46 (2002).Google Scholar
  13. 13.
    L. I. Domozhirov, “Determination of fatigue limit for materials applied to large components,” Tyazh. Mashinostr., No. 11 – 12, 2 – 7 (2013).Google Scholar
  14. 14.
    L. I. Domozhirov, “Sayano-Shushen hydro power plant – accident that should not have occurred,” Tyazh. Mashinostr., No. 7 – 8, 58 – 63 (2015).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.JSC NPO TsNIITMAShMoscowRussia

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