Skip to main content

Research Repository

Advanced Search

All Outputs (46138)

Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement
Presentation / Conference Contribution
Hooshmand, H., Liu, M., Pappas, A., Thompson, A., Leach, R., & Piano, S. (2023, June). Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement. Presented at Euspen’s 23rd International Conference & Exhibition, Copenhagen, Denmark

The most common optical technologies for surface topography measurement are coherence scanning interferometry (CSI), focus variation microscopy (FV) and imaging confocal microscopy (CM). Due to the benefits and drawbacks of each, these instruments ar... Read More about Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement.

Alternating Sequential Model Predictive Control of Matrix Converter
Presentation / Conference Contribution
Zhang, J., Rivera, M., & Wheeler, P. (2023, June). Alternating Sequential Model Predictive Control of Matrix Converter. Presented at 2023 IEEE International Conference on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2023, Wuhan, China

Weighting factor design is one of the challenges faced by model predictive control (MPC) when multiple control objectives are to be achieved simultaneously. This paper proposes an alternating sequential MPC (ASMPC) in which the cost functions are eva... Read More about Alternating Sequential Model Predictive Control of Matrix Converter.

Co-creating Museum Robots With People That Are Autistic and/or Have Learning Disabilities
Presentation / Conference Contribution
Cameron, H., Story, M., Reyes-Cruz, G., & Galvez Trigo, M. J. (2023, July). Co-creating Museum Robots With People That Are Autistic and/or Have Learning Disabilities. Presented at First International Symposium on Trustworthy Autonomous Systems, Edinburgh, UK

The integration of robots into everyday life is an increasingly common and mundane phenomena. Understanding how people regard and interact with these robots is a rapidly growing area of study, however, there is limited consideration of the attitudes... Read More about Co-creating Museum Robots With People That Are Autistic and/or Have Learning Disabilities.

Sequential Rule Mining for Automated Design of Meta-heuristics
Presentation / Conference Contribution
Meng, W., & Qu, R. (2023, July). Sequential Rule Mining for Automated Design of Meta-heuristics. Presented at GECCO 2023 Companion - Proceedings of the 2023 Genetic and Evolutionary Computation Conference Companion, New York, USA

With a recently defined AutoGCOP framework, the design of local search algorithms can be defined as the composition of the basic elementary algorithmic components. These compositions into the best algorithms thus retain useful knowledge of effective... Read More about Sequential Rule Mining for Automated Design of Meta-heuristics.

Cone-shape Fresnel zone lens of flat dielectric rings
Presentation / Conference Contribution
Hristov, H. D., Rodriguez, J. M., Kamburov, L. P., & Urumov, J. R. (2013, July). Cone-shape Fresnel zone lens of flat dielectric rings. Presented at 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), Orlando, Florida, USA

Subwavelength resolution of conical Fresnel zone lens
Presentation / Conference Contribution
Rodriguez, J. M., Carrasco, H., & Hristov, H. D. (2013, July). Subwavelength resolution of conical Fresnel zone lens. Presented at 2013 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), Lake Buena Vista, Florida, USA

The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link
Presentation / Conference Contribution
Pena-Quintal, A., Niewiadomski, K., Muneeswaran, V., Greedy, S., Sumner, M., & Thomas, D. (2021, July). The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link. Presented at 2021 Joint IEEE International Symposium on Electromagnetic Compatibility Signal and Power Integrity, and EMC Europe, EMC/SI/PI/EMC Europe 2021, Virtual

This paper explores the effect of using a Spread Spectrum modulation technique with a Buck Converter on a communication cable coupled at the input voltage. The EMI created by the switching of the power converter generates damped oscillations on the d... Read More about The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link.

Computational Study of a Customised Shallow-Sump Aero-Engine Bearing Chamber With Inserts to Improve Oil Residence Volume
Presentation / Conference Contribution
Adeniyi, A. A., Chandra, B., & Simmons, K. (2017, June). Computational Study of a Customised Shallow-Sump Aero-Engine Bearing Chamber With Inserts to Improve Oil Residence Volume. Presented at ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Charlotte, North Carolina, USA

An aero-engine bearing chamber is a structure that is used to contain and collect oil used in lubricating and cooling the bearings supporting the high-speed engine shafts. There are various bearings in an aero-engine. Within the bearing chambers, the... Read More about Computational Study of a Customised Shallow-Sump Aero-Engine Bearing Chamber With Inserts to Improve Oil Residence Volume.

Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber
Presentation / Conference Contribution
Bristot, A., Morvan, H., Simmons, K., & Klingsporn, M. (2017, June). Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber. Presented at ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Charlotte, North Carolina, USA

In aero-engine bearing chambers, the modelling of sheardriven oil films with the Volume of Fluid method poses significant challenges linked with the need to accurately capture the gasliquid interaction at the free surface. Typically, the modelling of... Read More about Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber.

Effect of Vortex Shedding on the Performance of Scoop Based Lubrication Devices
Presentation / Conference Contribution
Prabhakar, A., Abakr, Y. A., & Simmons, K. (2017, June). Effect of Vortex Shedding on the Performance of Scoop Based Lubrication Devices. Presented at ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Charlotte, North Carolina, USA

In civil aircraft aeroengine bearing chambers it is sometimes difficult to feed oil to bearings using the traditional under-race or targeted jet approaches. In such situations one proposed solution is that of a scoop delivery system. Published experi... Read More about Effect of Vortex Shedding on the Performance of Scoop Based Lubrication Devices.

Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds
Presentation / Conference Contribution
Santhosh, R., Hee, J. L., Simmons, K., Johnson, G., Hann, D., & Walsh, M. (2017, June). Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds. Presented at ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Charlotte, North Carolina, USA

In civil aero-engine transmission system bearings are used for shaft location and load support. An experimental test facility in the University of Nottingham's Gas Turbine Transmissions Research Centre (G2TRC) was designed and commissioned to investi... Read More about Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds.

Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques
Presentation / Conference Contribution
Hee, J. L., Santhosh, R., Simmons, K., Johnson, G., Hann, D., & Walsh, M. (2017, June). Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques. Presented at ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Charlotte, North Carolina, USA

In a civil aero-engine transmission system a number of bearings are used for shaft location and load support. A bespoke experimental test facility in the University of Nottingham's Gas Turbine and Transmissions Research Centre (G2TRC) was created to... Read More about Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques.

Oil scoop simulation and analysis using CFD and SPH
Presentation / Conference Contribution
Korsukova, E., Kruisbrink, A., Morvan, H., Paleo Cageao, P., & Simmons, K. (2016, June). Oil scoop simulation and analysis using CFD and SPH. Presented at ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Seoul, South Korea

Fame or function? How webcomic artists choose where to share
Presentation / Conference Contribution
Dowthwaite, L., Houghton, R., & Mortier, R. (2015, April). Fame or function? How webcomic artists choose where to share. Presented at Ergonomics and Human Factors 2015, Daventry, UK

Online social networks are complex systems that are traditionally discussed in several different ways, often revolving around either the technology and design of the platforms themselves, or the behaviour and social interactions of the communities th... Read More about Fame or function? How webcomic artists choose where to share.

High strength steel tubular X-joints—an experimental insight under axial compression
Presentation / Conference Contribution
Pandey, M., & Young, B. (2017, December). High strength steel tubular X-joints—an experimental insight under axial compression. Presented at Tubular Structures XVI: 16th International Symposium for Tubular Structures, Melbourne, Australia

The paper describes a test program on cold-formed high strength steel tubular X-joints. The nominal yield strength of the tubular material was 960 MPa. The fabricated joints include the braces and chord made up of rectangular and square hollow sectio... Read More about High strength steel tubular X-joints—an experimental insight under axial compression.

Evaluating and propagating uncertainty in digital fringe projection systems
Presentation / Conference Contribution
Gayton, G., Isa, M., Su, R., & Leach, R. Evaluating and propagating uncertainty in digital fringe projection systems. Presented at Optical Measurement Systems for Industrial Inspection XII, Online Only

Fringe projection is a measurement technique able to produce high-density data measurements of Lambertian surfaces using a camera and projector. Evaluating the uncertainty of a fringe projection system is challenging because of the highdensity and th... Read More about Evaluating and propagating uncertainty in digital fringe projection systems.