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Optimisation of material properties for the modelling of large deformation manufacturing processes using a finite element model of the Gleeble compression test (2014)
Journal Article
Bennett, C., & Sun, W. (in press). Optimisation of material properties for the modelling of large deformation manufacturing processes using a finite element model of the Gleeble compression test. Journal of Strain Analysis for Engineering Design, 49(6), https://doi.org/10.1177/0309324713520310

The finite element modelling of manufacturing processes often requires a large amount of large plastic strain flow stress data in order to represent the material of interest over a wide range of temperatures and strain rates. Compression data generat... Read More about Optimisation of material properties for the modelling of large deformation manufacturing processes using a finite element model of the Gleeble compression test.

High temperature, low cycle fatigue characterization of P91 weld and heat affected zone material (2014)
Journal Article
Farragher, T., Scully, S., O'Dowd, N., Hyde, C. J., & Leen, S. (2014). High temperature, low cycle fatigue characterization of P91 weld and heat affected zone material. Journal of Pressure Vessel Technology, 136(2), Article 021403. https://doi.org/10.1115/1.4025943

The high temperature low cycle fatigue behavior of P91 weld metal (WM) and weld joints (cross-weld) is presented. Strain-controlled tests have been carried out at 400 °C and 500 °C. The cyclic behavior of the weld material (WM) and cross-weld (CW) sp... Read More about High temperature, low cycle fatigue characterization of P91 weld and heat affected zone material.

A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel (2014)
Journal Article
Barrett, R., Farragher, T., Hyde, C. J., O'Dowd, N., O'Donoghue, P., & Leen, S. (2014). A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel. Journal of Pressure Vessel Technology, 136(2), Article 021402. https://doi.org/10.1115/1.4025618

The finite element (FE) implementation of a hyperbolic sine unified cyclic viscoplasticity model is presented. The hyperbolic sine flow rule facilitates the identification of strain-rate independent material parameters for high temperature applicatio... Read More about A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel.

A Basis for Selecting the Most Appropriate Small Specimen Creep Test Type (2014)
Journal Article
Hyde, T. H., Hyde, C. J., & Sun, W. (2014). A Basis for Selecting the Most Appropriate Small Specimen Creep Test Type. Journal of Pressure Vessel Technology, 136(2), Article 024502. https://doi.org/10.1115/1.4025864

Many components in conventional and nuclear power plant, aero-engines, chemical plant etc., operate at temperatures which are high enough for creep to occur. These include plain pipes, pipe bends, branched pipes etc., the manufacture of such componen... Read More about A Basis for Selecting the Most Appropriate Small Specimen Creep Test Type.

GIS for all: exploring the barriers and opportunities for underexploited GIS applications (2014)
Journal Article
Hao, Y., Brown, M., & Harding, J. (2014). GIS for all: exploring the barriers and opportunities for underexploited GIS applications

Geographical Information Systems have been existed since the early 1960s, but evidence suggests that adoption of GIS technologies still remains relatively low in many sectors. We will explore both the barriers that affect the utilisation of GIS a... Read More about GIS for all: exploring the barriers and opportunities for underexploited GIS applications.

A depth-averaged model for non-isothermal thin-film rimming flow (2013)
Journal Article
Kay, E., Hibberd, S., & Power, H. (2014). A depth-averaged model for non-isothermal thin-film rimming flow. International Journal of Heat and Mass Transfer, 70, https://doi.org/10.1016/j.ijheatmasstransfer.2013.11.040

A model for non-isothermal shear-driven thin-film flow on the inside surface of a stationary circular cylinder is presented. Motivated by an application to film flow in an aero-engine bearing chamber the model extends lubrication theory analysis of t... Read More about A depth-averaged model for non-isothermal thin-film rimming flow.

Pragmatic optimisation methods for determining material constants of viscoplasticity model from isothermal experimental data (2013)
Journal Article
Rouse, J. P., Hyde, C. J., Sun, W., & Hyde, T. (in press). Pragmatic optimisation methods for determining material constants of viscoplasticity model from isothermal experimental data. Materials Science and Technology, 30(1), https://doi.org/10.1179/1743284713Y.0000000277

A procedure to estimate material constants for the unified Chaboche viscoplasticity model from experimental data has been published elsewhere; however several critical assumptions are made to enable this and potential numerical problems can limit the... Read More about Pragmatic optimisation methods for determining material constants of viscoplasticity model from isothermal experimental data.

Vibration suppression and coupled interaction study in milling of thin wall casings in the presence of tuned mass dampers (2013)
Journal Article
Kolluru, K. V., Axinte, D. A., Raffles, M. H., & Becker, A. A. (2014). Vibration suppression and coupled interaction study in milling of thin wall casings in the presence of tuned mass dampers. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 228(6), https://doi.org/10.1177/0954405413508769

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 about Vibration suppression and coupled interaction study in milling of thin wall casings in the presence of tuned mass dampers.

Finite element investigation of the effect of spina bifida on loading of the vertebral isthmus (2013)
Journal Article
Quah, C., Yeoman, M. S., Cizinauskas, A., Cooper, K., McNally, D., & Boszczyk, B. (2014). Finite element investigation of the effect of spina bifida on loading of the vertebral isthmus. Spine Journal, 14(4), https://doi.org/10.1016/j.spinee.2013.08.040

Background: Spondylolysis (SL) of the lower lumbar spine is frequently associated with spina bifida occulta (SBO). There has not been any study that has demonstrated biomechanical or genetic predispositions to explain the coexistence of these two pat... Read More about Finite element investigation of the effect of spina bifida on loading of the vertebral isthmus.

Usability of Geographic Information: current challenges and future directions (2013)
Journal Article
Brown, M., Sharples, S., Harding, J., Parker, C., Bearman, N., Maguire, M., …Jackson, M. (2013). Usability of Geographic Information: current challenges and future directions. Applied Ergonomics, 44(6), https://doi.org/10.1016/j.apergo.2012.10.013

The use of Geographic Information or GI, has grown rapidly in recent years. Previous research has identified the importance of usability and user centred design in enabling the proliferation and exploitation of GI. However, the design and developme... Read More about Usability of Geographic Information: current challenges and future directions.

Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers (2013)
Journal Article
Tremolet de Villers, B. J., MacKenzie, R. C., Jasieniak, J. J., Treat, N. D., & Chabinyc, M. L. (2014). Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers. Advanced Energy Materials, 4(5), Article 1301290. https://doi.org/10.1002/aenm.201301290

It is demonstrated that a combination of microsecond transient photocurrent measurements and fi lm morphology characterization can be used to identify a charge-carrier blocking layer within polymer:fullerene bulk-heterojunction solar cells. Solution-... Read More about Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers.

Inertial effects at moderate Reynolds number in thin-film rimming flows driven by surface shear (2013)
Journal Article
Kay, E., Hibberd, S., & Power, H. (in press). Inertial effects at moderate Reynolds number in thin-film rimming flows driven by surface shear. Physics of Fluids, 25(10), https://doi.org/10.1063/1.4825134

In this paper, we study two-dimensional thin-film flow inside a stationary circular cylinder driven by an imposed surface shear stress. Modelling is motivated by a need to understand the cooling and film dynamics provided by oil films in an aero-engi... Read More about Inertial effects at moderate Reynolds number in thin-film rimming flows driven by surface shear.

Discrete element modelling of material non-coaxiality in simple shear flows (2013)
Journal Article
Ai, J., Langston, P. A., & Yu, H. (2014). Discrete element modelling of material non-coaxiality in simple shear flows. International Journal for Numerical and Analytical Methods in Geomechanics, 38(6), 615-635. https://doi.org/10.1002/nag.2230

We investigate the quasi-static simple shear flow of a two-dimensional assembly of cohesionless particles using discrete element method (DEM) simulations. We focus on the unsteady flow regime where the solid would experience significant evolution of... Read More about Discrete element modelling of material non-coaxiality in simple shear flows.

Determination of elastic and viscoplastic material properties obtained from indentation tests using a combined finite element analysis and optimization approach (2013)
Journal Article
Kang, J., Becker, A. A., & Sun, W. (2015). Determination of elastic and viscoplastic material properties obtained from indentation tests using a combined finite element analysis and optimization approach. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 229(3), https://doi.org/10.1177/1464420713504534

Conventional indentation tests do not provide an accurate estimation of viscoplastic material properties. In this work, a combined finite element analysis and optimization approach is developed for the determination of elastic–plastic and creep mater... Read More about Determination of elastic and viscoplastic material properties obtained from indentation tests using a combined finite element analysis and optimization approach.

A review on remanufacture of dies and moulds (2013)
Journal Article
Chen, C., Wang, Y., Ou, H., He, Y., & Tang, X. (2014). A review on remanufacture of dies and moulds. Journal of Cleaner Production, 64, https://doi.org/10.1016/j.jclepro.2013.09.014

Dies and moulds, which are essential tools for manufacturing engineered products, usually fail or become obsolete after a certain period of use for a variety of reasons. Thus, they often need remanufacture. The objectives of this paper are to review... Read More about A review on remanufacture of dies and moulds.

Predicting the coefficient of thermal expansion for textile composites based on a unit cell approach (2013)
Conference Proceeding
Brown, L. P., Zeng, X., Long, A. C., Brooks, R., & Jones, I. A. (2013). Predicting the coefficient of thermal expansion for textile composites based on a unit cell approach.

The study focuses on unit cell FE modelling to predict coefficients of thermal expansion (CTEs) for sheared fabric laminates. Shear, as a dominant deformation mode in textile composites forming, introduces high degrees of anisotropy in both elasticit... Read More about Predicting the coefficient of thermal expansion for textile composites based on a unit cell approach.

Recent developments in the realistic geometric modelling of textile structures using TexGen (2013)
Conference Proceeding
Brown, L. P., Zeng, X., Long, A., & Jones, I. A. (2013). Recent developments in the realistic geometric modelling of textile structures using TexGen.

Realistic geometric representation of fabrics is essential for modelling of mechanical and physical properties of textiles and textile composites. It is also advantageous to be able to generate those models quickly and easily. Recent developments in... Read More about Recent developments in the realistic geometric modelling of textile structures using TexGen.

Small ring testing of a creep resistant material (2013)
Journal Article
Hyde, C. J., Hyde, T., Sun, W., Nardone, S., & De Bruycker, E. (2013). Small ring testing of a creep resistant material. Materials Science and Engineering: A, 586, https://doi.org/10.1016/j.msea.2013.07.081

Many components in conventional and nuclear power plant, aero-engines, chemical plant etc., operate at temperatures which are high enough for creep to occur. These include steam pipes, pipe branches, gas and steam turbine blades, etc. The manufacture... Read More about Small ring testing of a creep resistant material.