Structural Integrity of Metallic Structures
The Mechanics of Materials Division has over 30 year experience in ‘Structural Integrity’ of metallic materials based research, involving experimental testing, numerical modelling and the verification of component lifing methods which are associated with failures due to brittle, ductile, fatigue and creep fracture. The main aim has been directed towards developing techniques for predicting failure using fracture mechanics, continuum damage mechanics and micro to meso-scale modelling techniques, which are validated through appropriate experiments.
The division has collaborated with industry and international research establishments on numerous multi-disciplinary projects dealing with different aspects of fracture occurring at a range from cryogenic to very high temperatures. In particular, the main impetus has been in the field of high temperature creep/fatigue crack growth by considering the experimental and metallurgical aspects, micro‑models and numerical predictions associated with it. A considerable knowledge base has been accumulated on advanced steels, single crystals and high temperature protective coatings. The consequent product of this research has been the development of life assessment codes that have been adopted by a range of industrial bodies. Substantial input has been made to a number of codes including BS7910, ASTM, ASME, API, British Energy R6/R5 codes, ISO standards dealing with residual stresses and component creep/fatigue testing and also the design code for the ITER super magnet structure which includes fatigue fracture criteria for cracked components.
email: Kamran Nikbin
List of Publications
Relevant Links: Structural Integrity-RCA
Biglari FR, Nikbin KM, 2017, Numerical predictions of carburisation and crack evolution using a combined diffusion rate and remaining multi-axial creep ductility damage model, International Journal of Damage Mechanics, Vol:26, ISSN:1056-7895, Pages:859-880
et al., 2017, Quantification of residual stresses in electron beam welded fracture mechanics specimens, International Journal of Solids and Structures, Vol:106, ISSN:0020-7683, Pages:106-118
et al., 2017, Quantification of residual stresses in electron beam welded fracture mechanics specimens (vol 106, pg 106, 2017), International Journal of Solids and Structures, Vol:113, ISSN:0020-7683, Pages:255-255
et al., 2017, High Heat Flux Laser Testing of HfB2 Cylinders, Journal of the American Ceramic Society, Vol:100, ISSN:0002-7820, Pages:293-303
Najib MF, Nobari AS, Nikbin K, 2017, Modification and evaluation of a FRF-based model updating method for identification of viscoelastic constitutive models for a nonlinear polyurethane adhesive in a bonded joint, International Journal of Adhesion and Adhesives, Vol:74, ISSN:0143-7496, Pages:181-193