Evaluating the Impact of Conservatism in Industrial Fatigue Analysis of Life-Limited Components

Joshua Hoole, Pia Sartor, Julian Booker, Jonathan Cooper, Xenofon, V. Gogouvitis, R. Kyle Schmidt

Research output: Contribution to conferenceConference Paperpeer-review

3 Citations (Scopus)


This paper presents a review of the conservatism approaches applied by different industrial sectors to the stress-life (S-N) analysis of ‘life-limited’ or ‘safe-life’ components. A comparison of the fatigue design standards for 6 industrial sectors identified that the conservatism approaches are highly inconsistent when comparing the areas of variability and uncertainty accounted for along with the conservatism magnitude and method of application. Through the use of a case-study based on the SAE keyhole benchmark and 4340 steel S-N data, the industrial sector which introduces the greatest reduction of a component life-limit was identified as the nuclear sector. The results of the case-study also highlighted that conservatism applied to account for scatter in S-N data currently provides the greatest contribution to the reduction of component life-limits.
Original languageEnglish
Number of pages9
Publication statusPublished - 25 May 2018
Event12th International Fatigue Congress (FATIGUE 2018) - Futuroscope, Poitiers, France
Duration: 28 May 20181 Jun 2018


Conference12th International Fatigue Congress (FATIGUE 2018)
Internet address


  • Fatigue
  • Safe-life
  • Conservatism
  • Safety Factors


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