Research Repository

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A two-material miniature specimen test method and the sssociated inverse approach for high temperature applications (2018)
Journal Article
Wen, W., Sun, W., & Becker, A. (2019). A two-material miniature specimen test method and the sssociated inverse approach for high temperature applications. Theoretical and Applied Fracture Mechanics, 99, 1-8. doi:10.1016/j.tafmec.2018.10.008

A miniature two-material test specimen has been developed for material property characterization. Elastic-plastic and creep damage models have been applied for a semi-analytical model and a finite element (FE) model to simulate the miniature specimen... 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

On the interaction between welding residual stresses: a numerical and experimental investigation (2018)
Journal Article
Salerno, G., Bennett, C., Sun, W., Becker, A., Palumbo, N., Kelleher, J., & Zhang, S. Y. (2018). On the interaction between welding residual stresses: a numerical and experimental investigation. International Journal of Mechanical Sciences, 144, (654-667). doi:10.1016/j.ijmecsci.2018.04.055. ISSN 0020-7403

The interaction of weld induced residual stresses in an important issue for multi-pass and repair welding operations; effective prediction of the magnitude and location of peak residual stresses can lead to improved lifing predictions and greater und... Read More

Finite element modelling strategies of weld repair in pre-stressed thin components (2016)
Journal Article
Salerno, G., Bennett, C., Sun, W., & Becker, A. A. (in press). Finite element modelling strategies of weld repair in pre-stressed thin components. Journal of Strain Analysis for Engineering Design, 51(8), doi:10.1177/0309324716666436. ISSN 0309-3247

A total of two computational procedures have been developed in the commercial finite element software codes Sysweld and ABAQUS to analyse and predict the residual stress state after the repair of small weld defects in thin structural components. The... Read More

Analysis of shape and location effects of closely spaced metal loss defects in pressurised pipes (2016)
Journal Article
Al Owaisi, S., Becker, A. A., & Sun, W. (2016). Analysis of shape and location effects of closely spaced metal loss defects in pressurised pipes. Engineering Failure Analysis, 68, doi:10.1016/j.engfailanal.2016.04.032. ISSN 1350-6307

Metal loss due to corrosion is a serious threat to the integrity of pressurised oil and gas transmission pipes. Pipe metal loss defects are found in either single form or in groups (clusters). One of the critical situations arises when two or more de... Read More

A finite strain fibre-reinforced viscoelasto-viscoplastic model of plant cell wall growth (2015)
Journal Article
Huang, R., Becker, A. A., & Jones, I. A. (2015). A finite strain fibre-reinforced viscoelasto-viscoplastic model of plant cell wall growth. Journal of Engineering Mathematics, 95(1), doi:10.1007/s10665-014-9761-y. ISSN 0022-0833

A finite strain fibre-reinforced viscoelasto-viscoplastic model implemented in a finite element (FE) analysis is presented to study the expansive growth of plant cell walls. Three components of the deformation of growing cell wall, i.e. elasticity, v... Read More

Simulation of the fatigue behaviour of a power plant steel with a damage variable (2015)
Journal Article
Lu, J., Sun, W., Becker, A. A., & Saad, A. A. (2015). Simulation of the fatigue behaviour of a power plant steel with a damage variable. International Journal of Mechanical Sciences, 100, doi:10.1016/j.ijmecsci.2015.06.019. ISSN 0020-7403

The fatigue behaviour of a 9Cr power plant steel at a temperature of 600 °C was studied by uniaxial fatigue tests and microstructural analysis using electron microscopy. A continuum damage mechanics apporach was coupled to the constitutive equations... Read More

Elasto-plastic finite element analysis of titanium metal matrix composite shafts under torsional loading (2014)
Journal Article
Hyde, T. H., Punyong, K., & Becker, A. A. (2015). Elasto-plastic finite element analysis of titanium metal matrix composite shafts under torsional loading. Journal of Strain Analysis for Engineering Design, 50(3), 199-216. doi:10.1177/0309324714560387

Elasto-plastic finite element analyses of titanium metal matrix composite shafts subjected to torsional loading are presented based on a unit cell approach. The analyses cover different volume fractions and different values of the coefficient of fric... Read More

Effects of compositions of filler, binder and porosity on elastic and fracture properties of nuclear graphite (2014)
Journal Article
Kyaw, S. T., Sun, W., & Becker, A. A. (2015). Effects of compositions of filler, binder and porosity on elastic and fracture properties of nuclear graphite. Journal of Nuclear Materials, 457, doi:10.1016/j.jnucmat.2014.10.071

Physical mechanisms at different length scales have to be taken into account while predicting the overall failure of nuclear graphite structures of advanced gas cooled graphite reactors. In this paper, the effect of composition of meso graphite phase... Read More

Vibration suppression and coupled interaction study in milling of thin wall casings in the presence of tuned mass dampers (2013)
Journal Article
dampers. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 228(6), doi:10.1177/0954405413508769. ISSN 0954-4054

Damping of machining vibrations in thin-wall structures is an important area of research due to the ever-increasing use of lightweight structures such as jet engine casings. Published literature has focussed on passive/active damping solutions for op... Read More

Numerical simulation of residual stresses induced by weld repair in a stainless steel pipe considering the influence of an initial fabrication weld
Conference Proceeding
Salerno, G., Bennett, C., Sun, W., & Becker, A. A. (in press). Numerical simulation of residual stresses induced by weld repair in a stainless steel pipe considering the influence of an initial fabrication weld. Manuscript submitted for publication

This work presents the application of a finite element (FE) model developed to simulate the repair process in the case of components with a pre-existing stress state. The approach is tested in the case of a repair of a laser beam weld in a stainless... Read More