Project Code: 32878
Compare the probability of failure of selected welded structures using two approaches: risk-based assessment and fracture-mechanics-based assessment.
Demonstrate whether/how the two methods can be integrated.
The project aims to develop new capabilities in assessing the reliability of safety-critical welded structures, and to integrate risk-based assessment (‘top-down’) and fracture-mechanics-based assessment (‘bottom-up’). The project will focus initially on a single failure mode (brittle fracture under monotonic loading), both because of its practical importance and because of its amenability to modelling using fracture mechanics techniques, both deterministic and probabilistic. Different types of welded structure will be considered, with particular attention paid to structural redundancy and the role of residual stress.
Relevant Industry Sectors
Oil and Gas; Pipelines; Power Generation; Infrastructure
Technical and Economic Benefits
Improved safety and reduced costs of assessment and inspection will be enabled by: (i) integration of two disparate methods of quantitative reliability assessment, which are currently typically undertaken by different teams; (ii) an understanding of the probability of failure associated with Engineering Critical Assessment (ECA) carried out using currently accepted deterministic methods.
None as yet