Relationship Between the Crack Velocity, Fractal Dimension, and Dynamic Fracture Toughness of a Material

  • A. M. Bragov
  • A. Yu. Konstantinov
  • A. V. Kuznetsov
  • A. K. Lomunov
  • G. G. Savenkov


This paper presents the results of experimental studies of the crack propagation velocity and the dynamic fracture toughness of St. 45 steel and D16T Duralumin using a modified Kolsky method with a split Hopkinson bar. The results of microfractographic analysis of samples are given, and the fractal dimension is determined. The critical stress intensity factors are calculated using the obtained fractal dimension values.


crack velocity fractal dimension dynamic fracture toughness 


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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. M. Bragov
    • 1
  • A. Yu. Konstantinov
    • 1
  • A. V. Kuznetsov
    • 2
  • A. K. Lomunov
    • 1
  • G. G. Savenkov
    • 2
    • 3
  1. 1.Research Institute of MechanicsLobachevsky State UniversityNizhnii NovgorodRussia
  2. 2.Armalit Machine-Building PlantSt. PetersburgRussia
  3. 3.St. Petersburg State Technological Institute (Technical University)St. PetersburgRussia

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