In order to guarantee a fatigue lifetime with a conventional and low probability of failure, a probabilistic fatigue assessment diagram is proposed as a tool. The safe domain is limited by the fatigue failure assessment curve, which depends on material properties through Basquin’s exponent and the endurance limit of the material. From the double-truncated dis- tribution of the targeted maximum applied stress, it is possible to find the failure probability and its associated safety factor. An example of an aeronautical component made of TA6V ti- tanium alloy welded by laser and exhibiting an undercut at the weld toe is given.
A PROBABILISTIC FATIGUE ASSESSMENT DIAGRAM TO GET A GUARANTEED LIFETIME WITH A LOW PROBABILITY OF FAILURE / Jallouf, S.; Casavola, Caterina; Pappalettere, Carmine; Pluvinage, G.. - (2016).
A PROBABILISTIC FATIGUE ASSESSMENT DIAGRAM TO GET A GUARANTEED LIFETIME WITH A LOW PROBABILITY OF FAILURE
CASAVOLA, Caterina;PAPPALETTERE, Carmine;
2016-01-01
Abstract
In order to guarantee a fatigue lifetime with a conventional and low probability of failure, a probabilistic fatigue assessment diagram is proposed as a tool. The safe domain is limited by the fatigue failure assessment curve, which depends on material properties through Basquin’s exponent and the endurance limit of the material. From the double-truncated dis- tribution of the targeted maximum applied stress, it is possible to find the failure probability and its associated safety factor. An example of an aeronautical component made of TA6V ti- tanium alloy welded by laser and exhibiting an undercut at the weld toe is given.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
