Assessment of Minimal Fatigue Crack Growth Rate After a Single Overload in D16chT Alloy

  • Yuriy Pyndus
  • Oleh Yasniy
  • Vasyl Fostyk
  • Pavlo MaruschakEmail author
Research Paper


The paper presents a technique for estimation of minimal fatigue crack growth (FCG) rate after the single overloads by tension in D16chT aluminum alloy. The function of FCG rate decreasing depending on overload factor and stress ratio was proposed. This function is based on Walker equation for determining of FCG rate under constant amplitude cyclic loading and retarding part. Proposed phenomenological equation enables the minimal FCG rate to be predicted after a single overload taking into account overload factor and stress ratio in D16chT alloy. Good enough agreement of calculation results and testing data of minimal FCG rates after a single overload was shown graphically.


Fatigue Crack Single overload Retardation Minimal crack growth rate 


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Copyright information

© Shiraz University 2017

Authors and Affiliations

  • Yuriy Pyndus
    • 1
  • Oleh Yasniy
    • 1
  • Vasyl Fostyk
    • 1
  • Pavlo Maruschak
    • 1
    Email author
  1. 1.Ternopil National Ivan Pul’uj Technical UniversityTernopilUkraine

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