Strength of Materials

, Volume 14, Issue 10, pp 1289–1298 | Cite as

Effect of the dimensions of specimens on the crack resistance of creep-resisting hull steels

  • V. T. Troshchenko
  • V. V. Pokrovskii
  • V. G. Kaplunenko
  • P. V. Yasnii
  • G. P. Karzov
  • B. T. Timofeev
  • V. P. Leonov
Scientific-Technical
Received:
  • 32 Downloads

Conclusions

  1. 1.

    Increased thickness of specimens leads to reduced rate of fatigue crack growth on the first section of the diagram of fatigue failure and to increased value of Kth of the investigated steels at 293°K. This is probably due to the increased residual compressive stresses in the crack mouth and the increased time necessary for the emergence of a crack, originating in the central regions of the specimen, onto its lateral surface when the dimensions of the specimen are increased.

     
  2. 2.

    Increased thickness of the specimen practically does not cause a change of the rate of fatigue crack growth on the Paris section, but it increases the characteristics Kfc and KQ of the investigated steels under cyclic and static loading, respectively.

     
  3. 3.

    The effect of the scale on the characteristics of fracture toughness of structural steels is apparently connected with the proneness of the material to strain-hardening.

     

Keywords

Fatigue Hull Fracture Toughness Central Region Fatigue Crack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • V. T. Troshchenko
    • 1
  • V. V. Pokrovskii
    • 1
  • V. G. Kaplunenko
    • 1
  • P. V. Yasnii
    • 1
  • G. P. Karzov
    • 1
  • B. T. Timofeev
    • 1
  • V. P. Leonov
    • 1
  1. 1.Institute of Strength ProblemsAcademy of Sciences of the Ukrainian SSRKiev-Leningrad

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