All Outputs (384)

Application of Human Factors Analysis and Classification System (HFACS) to UK rail safety of the line incidents (2016)
Journal Article
Madigan, R., Golightly, D., & Madders, R. (2016). Application of Human Factors Analysis and Classification System (HFACS) to UK rail safety of the line incidents. Accident Analysis and Prevention, 97, 122-131. https://doi.org/10.1016/j.aap.2016.08.023

Minor safety incidents on the railways cause disruption, and may be indicators of more serious safety risks. The following paper aimed to gain an understanding of the relationship between active and latent factors, and particular causal paths for the... Read More about Application of Human Factors Analysis and Classification System (HFACS) to UK rail safety of the line incidents.

Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements (2016)
Journal Article
Orhan, O., Haffner-Staton, E., La Rocca, A., & Fay, M. (2016). Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements. Tribology International, 104, 272-284. https://doi.org/10.1016/j.triboint.2016.09.015

This work characterises soot nanoparticles by electron tomography using Weighted Back Projection algorithm and appraises the uncertainties in two-dimensional calculations by comparison with 3D parameters for flame-generated soot and diesel soot-in-oi... Read More about Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements.

A computational fluid dynamics simulation of oil-air flow between the cage and inner race of an aero-engine bearing (2016)
Journal Article
Adeniyi, A. A., Morvan, H., & Simmons, K. (2017). A computational fluid dynamics simulation of oil-air flow between the cage and inner race of an aero-engine bearing. Journal of Engineering for Gas Turbines and Power, 139(1), https://doi.org/10.1115/1.4034210

In aero-engines, the shafts are supported on bearings that carry the radial and axial loads. A ball bearing is made up of an inner race, an outer race, and a cage, which contains the balls, these together comprise the bearing elements. The bearings r... Read More about A computational fluid dynamics simulation of oil-air flow between the cage and inner race of an aero-engine bearing.

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), https://doi.org/10.1177/0309324716666436

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 about Finite element modelling strategies of weld repair in pre-stressed thin components.

Investigation on a new hole-flanging approach by incremental sheet forming through a featured tool (2016)
Journal Article
Cao, T., Lu, B., Ou, H., Long, H., & Chen, J. (2016). Investigation on a new hole-flanging approach by incremental sheet forming through a featured tool. International Journal of Machine Tools and Manufacture, 110, https://doi.org/10.1016/j.ijmachtools.2016.08.003

One of the major challenges in conventional incremental sheet forming (ISF) is the extreme sheet thinning resulted in an uneven thickness distribution of formed part. This is also the case for incrementally formed parts with hole-flanging features. T... Read More about Investigation on a new hole-flanging approach by incremental sheet forming through a featured tool.

Finite element analysis and experimental study of plastic lattice structures manufactured by selective laser sintering (2016)
Journal Article
Sun, W., & Choo, H. L. (2017). Finite element analysis and experimental study of plastic lattice structures manufactured by selective laser sintering. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 231(1-2), https://doi.org/10.1177/1464420716662296

The availability of additive manufacturing technologies in particular the selective laser sintering process has enabled the fabrication of high strength, lightweight and complex cellular lattice structures. In this study, the effective mechanical pro... Read More about Finite element analysis and experimental study of plastic lattice structures manufactured by selective laser sintering.

Modelling VARTM process induced variations on bending performance of composite Omega beams (2016)
Journal Article
Zeng, X., Schubel, P. J., & Lorrillard, J. (2016). Modelling VARTM process induced variations on bending performance of composite Omega beams. Composites Part A: Applied Science and Manufacturing, 90, https://doi.org/10.1016/j.compositesa.2016.08.004

Finite element simulation with cohesive contact is presented, to correlate the vacuum assisted RTM process and the bending performance of Omega beams. The model considers the process induced variations, including part thickness, resin rich pockets an... Read More about Modelling VARTM process induced variations on bending performance of composite Omega beams.

Fracture characteristics of PEEK at various stress triaxialities (2016)
Journal Article
Chen, F., Gatea, S., Ou, H., Lu, B., & Long, H. (2016). Fracture characteristics of PEEK at various stress triaxialities. Journal of the Mechanical Behavior of Biomedical Materials, 64, 173-186. https://doi.org/10.1016/j.jmbbm.2016.07.027

Polyether-ether-ketone (PEEK) is an alternative to metal alloys in orthopaedic applications. It gives significant advantages including excellent mechanical properties and non-toxicity. In this work, a set of specimens with different notched radii wer... Read More about Fracture characteristics of PEEK at various stress triaxialities.

Effects of surface roughness on thermo-mechanical fatigue life of a P91 power plant steel (2016)
Journal Article
Kyaw, S. T., Rouse, J. P., Lu, J., & Sun, W. (in press). Effects of surface roughness on thermo-mechanical fatigue life of a P91 power plant steel. https://doi.org/10.1016/j.prostr.2016.06.086

P91 martensitic steel has now been widely used for power plant components such as steam pipe sections and headers. With the shift to renewable sources, traditional fossil power plants are increasingly expected to operate under so called “two shifting... Read More about Effects of surface roughness on thermo-mechanical fatigue life of a P91 power plant steel.

The competing chemical and physical effects of transient fuel enrichment on heavy knock in an optical spark ignition engine (2016)
Journal Article
Vafamehr, H., Cairns, A., Sampson, O., & Mohammadmohsen Moslemin, K. (2016). The competing chemical and physical effects of transient fuel enrichment on heavy knock in an optical spark ignition engine. Applied Energy, 179, https://doi.org/10.1016/j.apenergy.2016.07.038

The work was concerned with improving understanding of the chemical and physical trade-offs when employing transient over-fuelling to control auto-ignition in gasoline spark ignition engines under knock intensities not usually tolerated in optical en... Read More about The competing chemical and physical effects of transient fuel enrichment on heavy knock in an optical spark ignition engine.

Multiaxial viscoplasticity modelling of power plant steel (2016)
Journal Article
Saad, A. A., Sun, W., & Tobi, A. M. (in press). Multiaxial viscoplasticity modelling of power plant steel. Key Engineering Materials, 701, https://doi.org/10.4028/www.scientific.net/KEM.701.230

The thermo-mechanical fatigue (TMF) of power plant components is caused by the cyclic operation of power plant. A time-dependent plasticity model can be used to simulate the component response under cyclic thermo-mechanical loading. This paper is con... Read More about Multiaxial viscoplasticity modelling of power plant steel.

Pulsed laser ablation as a tool for in-situ balancing of rotating parts (2016)
Journal Article
Stoesslein, M., Axinte, D. A., & Bilbao Guillerna, A. (2016). Pulsed laser ablation as a tool for in-situ balancing of rotating parts. Mechatronics, 38, 54-67. https://doi.org/10.1016/j.mechatronics.2016.06.006

The balancing of complex rotating systems is a challenging task as it may require repetitive (dis)assembly to enable mass adjustments; thus, developing methods for in-situ dynamic balancing of rotatives is regarded as a key technology enabler. In thi... Read More about Pulsed laser ablation as a tool for in-situ balancing of rotating parts.

On the effects of friction modelling on small punch creep test responses: a numerical investigation (2016)
Journal Article
Cortellino, F., Sun, W., & Hyde, T. (in press). On the effects of friction modelling on small punch creep test responses: a numerical investigation. Journal of Strain Analysis for Engineering Design, 51(7), https://doi.org/10.1177/0309324716655661

This paper shows the results of finite element (FE) analyses of Small Punch Creep Testing (SPCT) of a P91 steel at 600°C using two different approaches to model the friction between the specimen and the punch. The numerical results obtained by using... Read More about On the effects of friction modelling on small punch creep test responses: a numerical investigation.

A study on the evolution of the contact angle of small punch creep test of Ductile materials (2016)
Journal Article
Cacciapuoti, B., Sun, W., & McCartney, D. (in press). A study on the evolution of the contact angle of small punch creep test of Ductile materials. International Journal of Pressure Vessels and Piping, https://doi.org/10.1016/j.ijpvp.2016.06.002

The work discussed in the present paper reports a novel investigation of the applicability of Chakrabarty's theory, for membrane stretching of a circular blank over a rigid punch, to small punch creep test (SPCT). The Chakrabarty solution was compare... Read More about A study on the evolution of the contact angle of small punch creep test of Ductile materials.

X-ray computed tomography for additive manufacturing: a review (2016)
Journal Article
Thompson, A., Maskery, I., & Leach, R. K. (2016). X-ray computed tomography for additive manufacturing: a review. Measurement Science and Technology, 27(7), Article 072001. https://doi.org/10.1088/0957-0233/27/7/072001

In this review, the use of x-ray computed tomography (XCT) is examined, identifying the requirement for volumetric dimensional measurements in industrial verification of additively manufactured (AM) parts. The XCT technology and AM processes are summ... Read More about X-ray computed tomography for additive manufacturing: a review.

Yb3+ doping effects on thermal conductivity and thermal expansion of Yttrium aluminium garnet (2016)
Journal Article
Wang, J., Xu, F., Wheatley, R., Neate, N. C., & Hou, X. (2016). Yb3+ doping effects on thermal conductivity and thermal expansion of Yttrium aluminium garnet. Ceramics International, 42(12), 14228-14235. https://doi.org/10.1016/j.ceramint.2016.06.034

Yttrium Aluminium Garnet (YAG) is an attractive candidate as thermal barrier material used for turbine blade in aero engines, due to its relatively low thermal conductivity, low oxygen diffusivity and good phase stability at high temperature. YAG has... Read More about Yb3+ doping effects on thermal conductivity and thermal expansion of Yttrium aluminium garnet.

Machining of additively manufactured parts: implications for surface integrity (2016)
Journal Article
Oyelola, O., Crawforth, P., M'Saoubi, R., & Clare, A. T. (in press). Machining of additively manufactured parts: implications for surface integrity. Procedia CIRP, 45, https://doi.org/10.1016/j.procir.2016.02.066

Additive manufacturing methods continue to move towards production ready technologies with the widely extolled virtues of rapid transition from design to part and enhanced design freedoms. However, due to fundamental limitations of laser based proces... Read More about Machining of additively manufactured parts: implications for surface integrity.

The role of geometry changes and debris formation associated with wear on the temperature field in fretting contacts (2016)
Journal Article
Jin, X., Sun, W., & Shipway, P. (2016). The role of geometry changes and debris formation associated with wear on the temperature field in fretting contacts. Tribology International, 102, https://doi.org/10.1016/j.triboint.2016.05.043

The temperature of a fretting contact is known to be a key factor in its development. However, as a test proceeds, the wear scar changes, both geometrically and through the formation of oxide-based debris-beds. Accordingly, the effects of these on th... Read More about The role of geometry changes and debris formation associated with wear on the temperature field in fretting contacts.

Inviscid instability of two-fluid free surface flow down an incline (2016)
Journal Article
Ghosh, S., Usha, R., Govindarajan, R., & Tammisola, O. (2017). Inviscid instability of two-fluid free surface flow down an incline. Meccanica, 52(4-5), 955-972. https://doi.org/10.1007/s11012-016-0455-6

The inviscid temporal stability analysis of two-fluid parallel shear flow with a free surface, down an incline, is studied. The velocity profiles are chosen as piecewise-linear with two limbs. The analysis reveals the existence of unstable inviscid m... Read More about Inviscid instability of two-fluid free surface flow down an incline.

The characteristics of railway service disruption: implications for disruption management (2016)
Journal Article
Golightly, D., & Dadashi, N. (in press). The characteristics of railway service disruption: implications for disruption management. Ergonomics, https://doi.org/10.1080/00140139.2016.1173231

Rail disruption management is central to operational continuity and customer satisfaction. Disruption is not a unitary phenomenon - it varies by time, cause, location and complexity of coordination. Effective, user-centred technology for rail disrupt... Read More about The characteristics of railway service disruption: implications for disruption management.