Compatibility of S-N and crack growth curves in the fatigue reliability assessment of a welded steel joint

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Reliability analysis is a crucial phase in assessing the safety status of new and existing structures. One of its applications is to predict the fatigue life of fatigue prone details. Two models are used to formulate the fatigue limit state: S-N curves in combination with Palmgren-Miner damage accumulation rule and linear elastic fracture mechanics using fatigue crack growth rate curves. Within each model, choices must be made on the values of the variables and these choices are sometimes different in different standards. This study investigates the consistency between the standards by determining the failure probability of the different models and values for a transverse butt weld joint under Variable Amplitude Loading. Partial factors required for the design are then derived as a function of the required reliability for each model and associated values. The influence of the uncertainties related to each involved variable is evaluated by performing a sensitivity analysis.
Originele taal-2Engels
TitelProcedia Structural Integrity
Pagina's959-966
Aantal pagina's8
Volume5
DOI's
StatusGepubliceerd - 6 sep 2017
Evenement2nd International Conference on Structural Integrity, (ICSI 2017), September 4-7, 2017, Funchal, Madeira, Portugal - Funchal, Portugal
Duur: 4 sep 20177 sep 2017

Congres

Congres2nd International Conference on Structural Integrity, (ICSI 2017), September 4-7, 2017, Funchal, Madeira, Portugal
Verkorte titelICSI 2017
LandPortugal
StadFunchal
Periode4/09/177/09/17

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