An analytical model for the identification of the threshold of stress intensity factor range for crack growth

Marzio Grasso, Antonio De Iorio, Yigeng Xu, George Haritos, Muhodin Mohin, Yong Chen

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
308 Downloads (Pure)

Abstract

The value of the stress intensity factor (SIF) range threshold (∆K_th ) for fatigue crack growth (FCG) depends highly on its experimental identification. The identification and application of ∆K_(th )are not well established as its determination depends on various factors including experimental, numerical or analytical techniques used. A new analytical model which can fit the raw FCG experimental data is proposed. The analytical model proposed is suitable to fit with a high accuracy the experimental data and capable to estimate the threshold SIF range. The comparison between the threshold SIF range identified with the model proposed and those found in literature is also discussed. The ∆K_th identified is found to be quite accurate and consistent when compared to the literature with a maximum deviation of 5.61%. The accuracy with which the analytical model is able to fit the raw data is also briefly discussed.
Original languageEnglish
Article number3014172
Number of pages13
JournalAdvances in Materials Science and Engineering
Volume2017
DOIs
Publication statusPublished - 18 Jan 2017

Keywords

  • Damage tolerance
  • Fatigue thresholds
  • Long cracks
  • Threshold stress intensity factor
  • Linear Elastic Fracture Mechanics (LEFM)
  • Fatigue crack growth

Fingerprint

Dive into the research topics of 'An analytical model for the identification of the threshold of stress intensity factor range for crack growth'. Together they form a unique fingerprint.

Cite this