Tribo-dynamics of high speed precision spindle bearings by B.K. Karthikeyan

“…The demand for higher productivity and improved quality of the machined surfaces requires spindle designers to aim for higher spindle speeds and feed rates. For instance, in routing of non-ferrous metals, wood and plastics, spindle speeds of the order of 60,000 rpm have been achieved with the help of better assembly aiming for higher operational accuracy, and increased component quality. …”
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The construction and testing of an IR absorption metric for high speed sintering by H.R. Thomas

“…High Speed Sintering (HSS) is a new and innovative Rapid Manufacturing (RM) process that enables the manufacture of complex 3D geometries from polymer powders. …”
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Tribo-dynamic analysis of high-speed roller bearings for electrified vehicle powertrains by Harry Questa, Mahdi Mohammad-Pour, Stephanos Theodossiades, Colin Garner, Rickie Bewsher, Guenter Offner

“…Results reveal that the EHL film thickness increases from 0.2 to 1.9 micrometres across a speed range of 0 - 15 000 rpm. A comparison with conventional dry contact analysis shows that roller load can be underestimated if the lubricant film is neglected in the roller-race contact deformation.…”
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Adjusting the need for speed: assessment of a visual interface to reduce fuel use by Craig K. Allison, James Fleming, Xingda Yan, Roberto Lot, Neville A. Stanton

“…Abbreviations: CO­2: carbon dioxide; NASA-TLX: NASA task load index; RMS: root-mean-square; MD: mean difference.…”
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Effect of infra-red power level on the sintering behaviour in the high speed sintering process by Candice E. Majewski, D. Oduye, H.R. Thomas, Neil Hopkinson

“…Purpose: To investigate the effects of the infra-red power level on sintering behaviour in the High Speed Sintering process. Design/methodology/approach: Single-layer parts were produced using the High Speed Sintering process, in order to determine the effect of the infra-red power level on the maximum achievable layer thickness, and the degree of sintering. …”
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Tribodynamic modelling of high-speed rolling element bearings in flexible multi-body environments by Harry Questa, Mahdi Mohammad-Pour, Stephanos Theodossiades, Colin Garner, Stephen R. Bewsher, Gunter Offner

“…The elastohydrodynamic (EHL) film is shown to increase contact deflection, leading to increased contact forces and total bearing stiffness as rotational speeds increase. Results show that for a 68 Nm hub motor operating up to 21 000 rpm, the input bearing EHL film reaches a thickness of 4.15 μm. …”
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A simulation study on the effect of inlet valve opening on performance of high speed engines by Dimitar Nouhov, Rui Chen

“…The simulation was based on a 0.6l, 4-cylinder, 4-stroke, high speed (up to 13500rpm), production spark ignition engine. …”
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Optimising the front foot contact phase of the cricket fast bowling action by Paul James Felton, Fred Yeadon, Mark King

“…Good agreement was found between actual and simulated performances with a 4.0% RMS difference. Varying the activation timings of the torque generators resulted in an optimised simulation with a ball release speed 3.5 m/s faster than the evaluation simulation. …”
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Crank length alters kinematics and kinetics, yet not the economy of recumbent handcyclists at constant handgrip speeds by Barry Mason, Ben Stone, Martin Warner, Vicky Goosey-Tolfrey

“…Handgrip speed was controlled (1.6 m∙s-1 ) across trials with cadences ranging from 102 to 85 rpm. …”
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A study of aero engine fan flutter at high rotational speeds using holographic interferometry by Philip A. Storey

“…The holographic system was used to obtain good quality interferograms of the 0.86m diameter test fan when rotating at speeds just under 10 000rpm and undergoing unstalled flutter. …”
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Assessment of the accuracy of different systems for measuring football velocity and spin rate in the field by Katrine Okholm Kryger, Sean Mitchell, Steph Forrester

“…The aim of this study was to measure the level of agreement of four portable football velocity and spin rate measurement systems (Jugs speed radar gun, 2-D high-speed video, TrackMan and adidas miCoach football) against a Vicon motion analysis system. …”
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Datasets for High-speed range and velocity measurement using frequency scanning interferometry with adaptive delay lines by Christos Pallikarakis, Jonathan Huntley, Pablo Ruiz

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An experimental study into the effect of the pilot injection timing on the performance and emissions of a high-speed common-rail dual-fuel engine by John E.T. Rimmer, Stephen Johnson, Andrew Clarke

“…Furthermore, the effect of pilot injection quantity was investigated at a constant engine speed of 1500 rpm by completing a gaseous substitution sweep at the optimised injection timing for each load condition. …”
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Physical realisation of a nonlinear electromagnetic energy harvester for rotational applications by Ben Gunn, Stephanos Theodossiades, Steve Rothberg

“…This novel rotational vibration energy harvester concept may generate over 10 mW of electrical power for a broadband speed range of approximately 400 rpm (in the examined rotational system with set fluctuating speed) for wireless sensing purposes on rotating shafts.…”
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Calculations of in-cylinder flow of a controlled auto-ignition (CAI) engine by Julien A. Beauquel, Salah Ibrahim, Rui Chen

“…After validation of the numerical model against published laser doppler anemometry (LDA) experimental data (Pitcher et al., 2003), numerical calculations have been carried out to investigate the in-cylinder transient flow structure of a controlled auto-ignition (CAI) engine running at speeds of 1,500 rpm and 2,000 rpm. The geometry configuration of the engine is imported into the computational fluid dynamics (CFD) code used in this study. …”
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Effects of wheel and hand-rim size on submaximal propulsion in wheelchair athletes by Barry Mason, Lucas H.V. van der Woude, Keith Tolfrey, John P. Lenton, Vicky Goosey-Tolfrey

“…Each wheel was equipped with force-sensing hand-rims (SMARTWheel), which collected kinetic and temporal data. …”
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Engineering energy flexibility into buildings: development and evaluation of a model-predictive control strategy for demand response with space-heating by Rami El-Geneidy

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An eco-approach to optimise efficiency and productivity of a hydraulic excavator by Felix Ng, Jennifer Harding, Jacqui Glass

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Derivation of RCM-driven potential evapotranspiration for hydrological climate change impact analysis in Great Britain: a comparison of methods and associated uncertainty in future... by Christel Prudhomme, Jennifer Williamson

“…The results show that the FAO56 version of the Penman-Monteith equations reproduces best the spatial and seasonal variability of MORECS PET across GB when driven by HadRM3-Q0 estimates of relative humidity, total cloud, wind speed and linearly bias-corrected mean surface temperature. …”
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Influence of purge flow swirl at exit to the high-pressure compressor on OGV/pre-diffuser and combustion system aerodynamics by Duncan Walker, Bharat R. Koli, Peter Beecroft

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Evaluation of the bilateral symmetry assumption in manual wheelchair propulsion: a systematic review of literature in daily-life and sports contexts by Lorenzo Rum, Vicky Goosey-Tolfrey, Riemer Vegter, Elena Bergamini

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Impacts on safety - results and implications: TeleFOT [Field Operational Tests of Aftermarket and Nomadic Devices in Vehicles]. D4.4.3 Vol 0.4 by Ruth Welsh, Andrew Morris, Steven Reed, Pontus Wallgren, Satu Innamaa, Anna Rama, Oscar M. Perez, Stewart A. Birrell, Devid Will, Roberto Brignolo, Leandro Guidotti

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Global associations between regional gray matter volume and diverse complex cognitive functions: evidence from a large sample study by Hikaru Takeuchi, Yasuyuki Taki, Rui Nouchi, Ryoichi Yokoyama, Yuka Kotozaki, Seishu Nakagawa, Atsushi Sekiguchi, Kunio Izuka, Yuki Yamamoto, Sugiko Hanawa, Tsuyoshi Araki, Carlos M. Miyauchi, Takamitsu Shinada, Kohei Sakaki, Yuko Sassa, Takayuki Nozawa, Shigeyuki Ikeda, Susumu Yokota, Daniele Magistro, Ryuta Kawashima

“…To test this hypothesis, we used the data from a large sample of healthy young adults [776 males and 560 females; mean age: 20.8 years, standard deviation (SD) = 0.8] and investigated associations between rGMV and scores on multiple CCA tasks (including non-verbal reasoning, verbal working memory, Stroop interference, and complex processing speed tasks involving spatial cognition and reasoning). …”
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Real-time classification of aggregated traffic conditions using relevance vector machines by Christos Katrakazas, Mohammed Quddus, Wen-Hua Chen

“…Traffic conditions are labelled as dangerous (i.e. probably leading to a collision) and safe (i.e. a normal driving) based on 15-minute measurements of average speed and volume. Two different RVM algorithms are trained with two real-world datasets and validated with one real-world dataset describing traffic conditions of a motorway and two A-class roads in the UK. …”
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The impact of service and government-policy attributes on consumer preferences for electric vehicles in China by Lixian Qian, Jose M. Grisolia, Didier Soopramanien

“…We find that Chinese consumers have the highest willingness to pay for obtaining a free vehicle license for EVs (106,144 RMB on average) and being permitted to install a home charging post (91,039 RMB on average). …”
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Manufacture of large uniform droplets using rotating membrane emulsification by Goran Vladisavljevic, Richard A. Williams

“…The optimal conditions for producing uniform emulsion droplets were a Carbomer content of 0.1–0.25 wt% and a membrane rotational speed of 350 rpm, under which the average droplet diameter was 105–107 μm and very narrow coefficients of variation of 4.8–4.9%. …”
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Experimental design for characterization of force transmissibility through roller bearings in electric machines and transmissions by Jack Walker, Harry Questa, Rickie Bewsher, Mahdi Mohammadpour, Christoph Schweiger, Martin Sopouch, Gunter Offner

“…In particular, the rotational speed of the shaft, which significantly exceeds that of previously reported rigs, and the excitation frequency ramp up at the same rate as the frequency of the shaft enabling the phenomena found in Hybrid and Electric Vehicles. …”
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Analysis of process parameters related to the single-screw extrusion of recycled polypropylene blends by using design of experiments by Tingrui Fu, Barry Haworth, Leno Mascia

“…The resulting statistical and response surface predictions have demonstrated that the low viscosity component concentration in the blend is a dominating factor on melt pressure and screw torque, apart from the expected effect of screw speed on output. Viscous heating is affected only by screw speed and recycled polypropylene concentration. …”
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A self-tuned rotational vibration energy harvester for self-powered wireless sensing in powertrains by Ben Edward Gunn, Panagiotis Alevras, James Flint, Hailing Fu, Steve Rothberg, Stephanos Theodossiades

“…The device is demonstrated to be capable of powering a wireless temperature sensor transmitting data every 2 s for a range of more than 1000 rpm of the shaft rotational speed. Higher data transmission rates could be achieved by optimising the design of the harvester, which currently has an overall volume …”
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Minimisation of inverter-fed induction-motor losses by optimisation of PWM voltage waveforms by Ahmet F. Mergen

“…The motor operates with constant airgap flux density throughout its speed range to obtain maximum output power at fixed per unit slip. …”
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Power characteristics of inline rotor-stators with different head designs by Alex Hannam, Trevor Sparks, Gul Ozcan-Taskin

“…Increasing the number of stator teeth increased the power input and this effect was more prominent when operating at the highest rotor speed of 3000 rpm and at low flowrates (1–2 l/s).…”
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Development of a full scale experimental and simulation tool for environmental control system optimisation and fault detection by Thomas Childs, Andy Jones, Rui Chen, Angus Murray

“…Furthermore, a scenario depicting a ram air blockage in the secondary heat exchanger demonstrates the system’s ability to mask faults. …”
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Simulation study of particle–fluid two-phase coupling flow field and its influencing factors of crystallization process by Wen-Rui Wang, Zhao Li, Jia-Ming Zhang, Han Li

“…In the conditions listed in this paper, the minimum stirring speed is roughly 50 rpm to form a stable and circular flow field in the crystallizer, and the maximum particle size is controlled at around 12 mm and the feed particle concentration of roughly 32% to ensure cyclic crystallization. …”
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Advance control strategies for Maglev suspension systems by Jonathan E. Paddison

“…The Birmingham Maglev developed over fifteen years ago has successfully demonstrated the inherent advantages of low speed maglev over comparable wheeled systems. It remains the only commercially operational Maglev in the world today. …”
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Experimental investigation on the effect of drill quality on the performance of bone drilling by Khurshid Alam, Sujan Piya, Ahmed Al-Ghaithi, Vadim Silberschmidt

“…The favorable conditions for bone drilling are obtained when feed rate, drill speed and the roughness of the cutting edge of the drill were fixed at 30 mm, 2000 rpm and up to 2 mm, respectively. …”
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Numerical studies of reacting and non-reacting underexpanded sonic jets by Paul Birkby

“…A pressure-based CFD methodology has been employed, incorporating extensions to handle high speed, shock containing flows. The methodology extended previous studies of high speed flow employing pressure based methods to unlimited Mach Numbers. …”
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An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures by Petros Efthymiou

“…This thesis investigates the effect of cooling an optical research engine to temperatures as low as -7°C, one of the legislative test conditions. A high-speed 9 kHz optical investigation of the in-cylinder combustion and fuel spray along with in-cylinder pressure measurements was completed with the engine motored and fired at 1500 rpm during combustion conditions that were essentially homogeneous and stoichiometric. …”
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A pendulum-based rotational energy harvester for self-powered monitoring of rotating systems in the era of industrial digitization by Sayed Masabi, Hailing Fu, James Flint, Stephanos Theodossiades

“…The fabricated device was able to stably operate up to 250 rad/s input speed with an eccentric mass as low as 30 g where 104.5 mW RMS was measured through 450Ω resistive load. …”
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PIV study of the flow field generated by a sawtooth impeller by Heema Unadkat, Chris Rielly, Zoltan Nagy

“…Stereoscopic and high-speed particle image velocimetry (PIV) techniques have been employed to study the flow field induced by a sawtooth (EkatoMizer) impeller, operated in the fully turbulent flow regime at an impeller speed of 1500 rpm. …”
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Laser torquemeter - a new instrument by T.H. Wilmshurst, Steve Rothberg, Neil A. Halliwell

“…In addition there is inbuilt immunity to shaft speed fluctuations and whole body vibrations.…”
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PP/clay nanocomposites: compounding and thin-wall injection moulding by Tingrui Fu

“…Furthermore, DoE investigations determined that a screw speed of 159 rpm and a feed rate of 5.4 kg/h are the optimum compounding conditions for the twin screw extruder used to obtain the highest tensile modulus and yield strength from the PPCN compounds. …”
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The thermomechanical properties of aromatic polymers by Sinin bin Hamdan

“…These systems were used in addition to standard hydraulic ram and dropweight equipment. A heater unit to enable tests to be carried out over the desired temperature range was also designed and constructed and used with all the above systems. …”
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Insights into cold-start disi combustion in an optical engine operating at -7°C by Petros Efthymiou, Martin H. Davy, Colin Garner, Graham Hargrave, John E.T. Rimmer, Dave Richardson

“…A DISI single-cylinder optical research engine was modified to simulate a range of operating temperatures down to the proposed -7°C. A high-speed 9 kHz optical investigation of the in-cylinder combustion and fuel spray along with incylinder pressure measurements was completed with the engine motored and fired at 1500 rpm during homogeneous and stoichiometric combustion conditions. …”
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A variable rate torsional oscillator for the rotational characterisation and comparison of advanced biofidelic headforms at impact relevant rates by Rory England, Sean Mitchell, Andy Harland, Jon Farmer, Nick Peirce

“…One main research theme towards this is the re-enactment of injury events in the laboratory, using impact apparatus such as drop towers, pneumatic rams, and projectile launchers. These all require a surrogate human headform from which measurements can be taken. …”
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Practice improves court mobility and self-efficacy in tennis-specific wheelchair propulsion by Paul Sindall, John Lenton, Barry Mason, Keith Tolfrey, Rory Cooper, Kathleen Martin Ginis, Vicky Goosey-Tolfrey

“…Purpose: Wheelchair tennis (WT) chair propulsion is uniquely characterised by the requirement for racket-holding coupled with effective hand-rim contact. Thus, investigations involving strategies to enhance chair mobility skills are merited. …”
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Thermal sensitivity analysis of avionic and environmental control subsystems to variations in flight condition by Andy Jones, Thomas Childs, Rui Chen, Angus Murray

“…Considerable system gains could be made by introducing an element of active control, such as limiting bleed and ram air consumption when avionic temperatures are low and ECS bypass flow rate is high.…”
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Influence of boundary conditions on starvation of piston ring conjunction by Rickie Bewsher, Mahdi Mohammadpour, Homer Rahnejat, Gunter Offner

“…The case of a cylinder of a 4-cylinder 4 stroke gasoline engine, running at the engine speed of 1500rpm is considered. The results show that with a more detailed and realistic inlet boundary a significant reduction in the minimum film thickness is predicted which leads to increased friction throughout the engine cycle.…”
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Synthesis of n-hexyl acetate in batch and chromatographic reactors by Dipesh Patel

“…The feasibility of reactive distillation for the recovery of acetic acid using n-hexanol was evaluated through residue curve map (RCM) determination experiments. RCM provides information to a design engineer of the existence of separation boundaries imposed by the singular points corresponding to the reactive/non-reactive azeotropes, thus provides an insight into the feasibility of reactive distillation for this purpose. …”
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Seeded emulsion polymerization of vinyl acetate by Jian Wang

“…There was no significant change in polymerization rate when the stirring rate was changed from 50 to 150 rpm, but, the polymerization rate was considerably reduced when the stirring rate was increased to 300 rpm. …”
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Experimental study on a small diesel genset dual fuelled with methane by Rui Chen, Jill Stewart

“…The performance and emissions (NOx and smoke) characteristics of various gaseous concentrations were recorded at 1500rpm (synchronous speed) and at no load, ¼, ½, ¾ and full load. …”
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