Thu, 03 September, 2020
A TWI Research paper, ‘Different Bayesian methods for updating the fatigue crack size distribution in a tubular joint,‘ has been published in the OMAE Journal.
TWI employee and former NSIRC PhD candidate, Hadi Khalili has had his research published in the Journal of Offshore Mechanics and Arctic Engineering (OMAE).
Hadi’s PhD research investigated improvements to structural reliability assessments using different Bayesian methods to update initial assumptions used in such assessments. The research looked into fatigue damage of joints in offshore platforms, the modelling of crack size data, including updating (when new inspection data is available) the probability distribution of crack size and the reliability of the joint.
The paper investigated two different Bayesian methods, analytical and numerical, highlighting the advantages and disadvantages of both. While the methodologies can be applied to different kinds of structures, Hadi’s research focussed on tubular joints in a specific jacket platform to demonstrate the proposed approach and compare the results of the two methods.
Hadi’s supervisor at TWI was Dr Ujjwal Bharadwaj, with co-supervision provided by Selda Oterkus and Nigel Barltrop from the University of Strathclyde, and Mark Tipping from Lloyd’s Register. The publication was made possible by the sponsorship and support of Lloyd’s Register Foundation. The work was enabled through, and undertaken at, the National Structural Integrity Research Centre (NSIRC), a postgraduate engineering facility for industry-led research into structural integrity established and managed by TWI through a network of both national and international Universities.
You can read the paper by following this link.