Uncertainty quantification of the failure assessment diagram for flawed steel components in BS 7910:2019

The failure assessment line (FAL) describes the interaction between plastic and fracture of flawed steel components subjected to tension or bending. This paper quantifies model uncertainty FAL as provided in internationally used British Standard BS 7910:2019 by comparing with actual load 82 wide plate 4 tubular joint tests. In findings others, it is demonstrated that accuracy significantly improved if crack tip constraint considered assessment. Irrespective this consideration, a non-negligible number tests has lower than one predicted 7910:2019, based on three toughness A penalty safety margin advocated compensate for this. It appears advantageous base average instead minimum equivalent mechanics together an associated (quantified) margin.