Research Repository

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Experimental characterisation and computational modelling of cyclic viscoplastic behaviour of turbine steel (2019)
Journal Article
Rae, Y., Benaarbia, A., Hughes, J., & Sun, W. (2019). Experimental characterisation and computational modelling of cyclic viscoplastic behaviour of turbine steel. International Journal of Fatigue, doi:10.1016/j.ijfatigue.2019.01.022

Fully reversed strain controlled low cycle fatigue and creep-fatigue interaction tests have been performed at ±0.7% strain amplitude and at three different temperatures (400°C, 500°C and 600°C) to investigate the cyclic behaviour of a FV566 martensit... Read More

Investigation of short-term creep deformation mechanisms in MarBN steel at elevated temperatures (2018)
Journal Article
Benaarbia, A., Xu, X., Sun, W., Becker, A., & Jepson, M. (2018). Investigation of short-term creep deformation mechanisms in MarBN steel at elevated temperatures. Materials Science and Engineering: A, 734, (491-505). doi:10.1016/j.msea.2018.06.063. ISSN 0921-5093

This paper reports the short-term creep behavior at elevated temperatures of a MarBN steel variant. Creep tests were performed at 3 different temperatures (625oC, 650oC and 675oC) with applied stresses ranging from 160 MPa to 300 MPa, and failure tim... Read More

A thermodynamically-based viscoelastic-viscoplastic model for the high temperature cyclic behaviour of 9-12% Cr steels (2018)
Journal Article
Benaarbia, A., Rouse, J. P., & Sun, W. (2018). A thermodynamically-based viscoelastic-viscoplastic model for the high temperature cyclic behaviour of 9-12% Cr steels. International Journal of Plasticity, 107, doi:10.1016/j.ijplas.2018.03.015

Improving the understanding of the long term rate dependent behaviour of materials is of critical importance in many engineering applications. Without this understanding, it is potentially difficult to ensure safe and effective plant operation while... Read More

Unified viscoplasticity modelling and its application to fatigue-creep behaviour of gas turbine rotor (2017)
Journal Article
Benaarbia, A., Rae, Y., & Sun, W. (2018). Unified viscoplasticity modelling and its application to fatigue-creep behaviour of gas turbine rotor. International Journal of Mechanical Sciences, 136, doi:10.1016/j.ijmecsci.2017.12.008. ISSN 0020-7403

This paper presents an elasto-visco-plastic finite element modelling framework including the associated UMAT codes to investigate the high temperature behaviour of gas turbine rotor steels. The model used in the FE study is an improved and unified mu... Read More