Engineering, Department of
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The Department of Engineering is internationally renowned for the quality of its research. In the 2008 Research Assessment Exercise (RAE), the Department submitted over 90% of its academic staff. The quality profile, as judged by the RAE, showed that 90% of the research was internationally recognised, internationally excellent or world leading in terms of originality, significance, and rigour.

The Department of Engineering has six research groups:

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Recent Submissions

Decentralised approaches to Anti-windup Design with Application to Quadrotor Unmanned Aerial Vehicles

Turner, Matthew Christopher; Ofodile, N. K.

Initial Condition Effects on Large Scale Structure in Numerical Simulations of Plane Mixing Layers

In this paper, Large Eddy Simulations are performed on the spatially developing plane turbulent mixing layer. The simulated mixing layers originate from initially laminar conditions. The focus of this research is on the effect of the nature of the imposed fluctuations on the large-scale spanwise and streamwise structures in the flow. Two simulations are performed; one with low-level three-dimensional inflow fluctuations obtained from pseudo-random numbers, the other with physically correlated...

McMullan, William Andrew; Garrett, Stephen J.

The existence of a lateral size effect and the relationship between indentation and scratch hardness in copper

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Kareer, A.; Hou, X. D.; Jennett, N. M.; Hainsworth, Sarah V.

Karhunen-Loève Transform based Lossless Hyperspectral Image Compression for Space Applications

The research presented in this thesis is concerned with lossless hyperspectral image compression of satellite imagery using the Integer Karhunen-Loève Transform (KLT). The Integer KLT is addressed because it shows superior performance in decorrelating the spectral component in hyperspectral images compared to other algorithms, such as, Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT) as well as the Lossless Multispectral and Hyperspectral Image Compression algorithm proposed ...

Mat Noor, Nor Rizuan bin

Minimizing discordances in automated classification of fractionated electrograms in human persistent atrial fibrillation

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Almeida, Tiago P.; Chu, Gavin S.; Salinet, J. L.; Vanheusden, Frederique J.; Li, Xin... et al.

Task Oriented Fault-Tolerant Distributed Computing for Use on Board Spacecraft

Current and future space missions demand highly reliable, High Performance Embedded Computing (HPEC). The review of the literature has shown that no single solution could meet both issues efficiently at present addressing HPEC as well as reliability. Furthermore, there is no suitable method of assessing performance for such a scheme.
In this thesis a novel cooperative task-oriented fault-tolerant distributed computing (FTDC) architecture is proposed, which caters for high performance and rel...

Fayyaz, Muhammad

Application of PEA technique to space charge measurement in cylindrical geometry HV cable systems

Space charge, as one of the major concerns for the reliability of polymeric High
Voltage Direct Current (HVDC) cables, has drawn wide attention in both academia and
industry. Accordingly, measurement techniques along with accurate data interpretation
have been required to study space charge behaviour in insulation materials and to
provide solid bases for simulation activities. In this work, a high temperature space
charge measurement system for mini-cables has been developed based on the...

Zheng, Hualong

Design and evaluation of flexible time-triggered task schedulers for dynamic control applications

A statically-scheduled time-triggered (TT) software architecture demonstrates very predictable patterns of temporal behaviour and is – therefore – widely considered to be an appropriate platform for many high integrity and safety-critical embedded applications. However, there remains an important class of highly dynamic control systems for which it is considered that TT architectures are not a good match and for which the use of ―event triggered‖ (ET) designs is usually preferred. These appli...

Hanif, Musharraf Ahmed

Temperature Effect on Electrical Treeing and Partial Discharge Characteristics of Silicone Rubber-Based Nanocomposites

This study investigated electrical treeing and its associated phase-resolved partial discharge (PD) activities in room-temperature, vulcanized silicone rubber/organomontmorillonite nanocomposite sample materials over a range of temperatures in order to assess the effect of temperature on different filler concentrations under AC voltage. The samples were prepared with three levels of nanofiller content: 0% by weight (wt), 1% by wt, and 3% by wt. The electrical treeing and PD activities of thes...

Ahmad, M. H.; Bashir, N.; Buntat, Z.; Arief, Y. Z.; Jamil, A. A. A.... et al.

Neural correlates of learning and trajectory planning in the posterior parietal cortex.

The posterior parietal cortex (PPC) is thought to play an important role in the planning of visually-guided reaching movements. However, the relative roles of the various subdivisions of the PPC in this function are still poorly understood. For example, studies of dorsal area 5 point to a representation of reaches in both extrinsic (endpoint) and intrinsic (joint or muscle) coordinates, as evidenced by partial changes in preferred directions and positional discharge with changes in arm postur...

Torres, E. B.; Quian Quiroga, Rodrigo; Cui, H.; Buneo, C. A.

Real-Time Model Predictive Control Based on Dual Gradient Projection: Theory and Fixed-Point FPGA Implementation

Rubagotti, Matteo; Patrinos, P.; Guiggiani, A.; Bemporad, A.

Modelling the non-linear motion of the rat central airways

Advances in volumetric medical imaging techniques allowed the subject-specific modelling of the bronchial flow through the first few generations of the central airways using computational fluid dynamics (CFD). However, a reliable CFD prediction of the bronchial flow requires modelling of the inhomogeneous deformation of the central airways during breathing. This paper addresses this issue by introducing two models of the central airways motion. The first model utilises a node-to-node mapping ...

Ibrahim, Gihad; Rona, Aldo; Hainsworth, Sarah V.

New environments for neurophysiological investigations.

The main topics of research are in the sub-areas of neurophysiology that are concerned with measurement of the electrical activity arising from contracting muscle (EMG) and from the surface of the scalp (EEG). Investigations are restricted to the surface-recorded interference pattern EMG, and to the EEG waveform recorded in response to sensory stimulation, known as the evoked potential (EP). The EMG and EP are representative of two important classes of signal commonly encountered in engineeri...

Sehmi, Arvindra Singh.

The creep and failure of engineering ceramics under multiaxial states of stress.

The effort dedicated to developing the material properties of engineering ceramics has not been accompanied by a similar effort in developing design methods that would allow engineers to make full use of these materials. In particular the high temperature creep behaviour of engineering ceramics has received little attention. In this thesis two parallel approaches, one theoretical and one practical, have been taken towards the final aim of constructing design codes for the creep of ceramic mat...

Searle, Andrew Arthur.

Automated synthesis of lumped linear three-terminal networks.

The classical techniques of network synthesis are restricted to designs in idealized elements with series-parallel configurations. This research is an investigation into the possibility of unrestricted synthesis employing alternative techniques which involve optimization by computer. In this method the values of the elements are modified such that an error function is reduced. If the current network is unable to satisfy the required network response then the components have to be modified. A ...

Savage, W. H.

A review and the development of bounding methods in continuum mechanics.

Energy theorems and kindred inequalities have long been a basis for the analysis of redundant structures and the material continuum. In the first section of this thesis we trace the development of the principal results of elasticity, time-independent inelasticity and creep, from the principle of virtual work and the well-known theorems of linear elasticity to recent results which describe the deformation of general inelastic materials under time-varying loads. In certain instances where incom...

Scaife, J. A.

The computation of waveguide vector fields and the generation of field patterns using computer graphics.

Abstract not available.

Santos, M. L. X. dos.

Simultaneous stabilization of multivariable linear systems.

The simultaneous stabilization of a collection of systems has received considerable attention over a number of years. The practical motivation for a solution to the simultaneous stabilization problem (SSP) stems from the stability requirements of multimode systems in practical engineering. For example, a real plant may be subjected to several modes due to the failure of sensors and nonlinear systems are often represented by a set of linear models for design purposes. To examine these problems...

Saif, Abdul-Wahid Abdul-Aziz.

The mathematical modelling of ball-joints with friction.

At present the effects of friction are not included in three-dimensional mechanism simulation packages because of the difficulty of determining a friction model for joints such as the spherical joint where the frictional resistance to motion depends not only upon the coefficient of friction and the magnitude of the loading on the joint but also on the pressure distribution within the joint resulting from that loading. Thus the basis of this thesis has been the development of a mathematical mo...

Sage, R. M.

Photon correlation velocimetry for the fluid flow through turbomachinery.

This thesis is concerned with the application of photon correlation velocimetry to the design of products which employ rotating components in fluids. Two examples are considered, viz. The development of turbines and compressors for power generation. The development of propulsor design for use on underwater powered vehicles. The former required the measurement of high speed gas flows (up to Mach 1.8) both within cascades and in a model turbine. The latter entailed tests on models in both a wat...