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.
|Number of pages||9|
|Publication status||Published - 25 May 2018|
|Event||12th International Fatigue Congress (FATIGUE 2018) - Futuroscope, Poitiers, France|
Duration: 28 May 2018 → 1 Jun 2018
|Conference||12th International Fatigue Congress (FATIGUE 2018)|
|Period||28/05/18 → 1/06/18|
- Safety Factors
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Hoole, J., 23 Jun 2020
Student thesis: Doctoral Thesis › Doctor of Philosophy (PhD)File