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A new model for predicting fretting fatigue crack initiation life based on e ective slip amplitude

Badrikouhi, E ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.24200/sci.2022.60534.6849
  3. Publisher: Sharif University of Technology , 2023
  4. Abstract:
  5. In this study, a new model is developed for fretting fatigue crack initiation life prediction based on the slip amplitude as a macroscopic feature of the contact interfaces. The main di erence between the presented model and many other fretting fatigue life prediction models is the focus on the fretting speci c characteristics. In this model, a damage parameter is combined with a damage severity factor to obtain a new fretting fatigue crack initiation life prediction parameter. To investigate the accuracy of this new parameter, a series of fretting fatigue tests were conducted. Also, crack initiation life data from the literature were added to enhance parameter accuracy investigation. It was shown that the e ective slip amplitude was an unbiased geometric-independent parameter in fretting fatigue crack initiation life prediction. Also, comparison of the prediction results from the e ective slip amplitude with those of Smith-Watson-Topper and Ruiz parameters illustrated that the new parameter could outperform available fretting fatigue life prediction parameters. © 2023 Sharif University of Technology. All rights reserved
  6. Keywords:
  7. Crack initiation ; Damage parameter ; Damage severity factor ; Fretting fatigue ; Life prediction ; Slip amplitude
  8. Source: Scientia Iranica ; Volume 30, Issue 4 B , 2023 , Pages 1255-1264 ; 10263098 (ISSN)
  9. URL: https://scientiairanica.sharif.edu/article_23041.html