Simon Barrans
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View article: Safety and Sustainability in Medical Devices
Safety and Sustainability in Medical Devices Open
The European Union (EU) is promoting the integration of biobased plastics into industrial processes to support the circular economy framework and reduce greenhouse gas emissions. Biobased plastics have proven to be a low-carbon solution in…
View article: Use of the Theory of Critical Distances in Predicting Medium Cycle Fatigue Failure in Five-axis Ball End Milled Components
Use of the Theory of Critical Distances in Predicting Medium Cycle Fatigue Failure in Five-axis Ball End Milled Components Open
While casting may have historically been used to make components with free-form surfaces, five-axis milling with ball end cutters is becoming increasingly common. Although this form of production enables the use of more robust billet mater…
View article: An Adaptable Swivel Button Clamp with Enhanced Fatigue Durability
An Adaptable Swivel Button Clamp with Enhanced Fatigue Durability Open
This paper documents the design analysis and experimental validation undertaken to enable replacement of a galvanized, malleable cast iron swivel clamp button, used within the overhead line system, with a machined from billet, stainless-st…
View article: Predicting Failure of Tongue Compression End Fittings
Predicting Failure of Tongue Compression End Fittings Open
A common form of cantilever used to support the overhead line equipment is assembled from steel tubes with crimped in end fittings. Within the older UK stock, these end fittings have been seen to come loose. In this paper, the crimping ope…
View article: Predicting fatigue failure in five‐axis machined ball‐end milled components through FKM local stress approach
Predicting fatigue failure in five‐axis machined ball‐end milled components through FKM local stress approach Open
Components created with five‐axis machining show a multi‐scale surface character due to cusps created on the surface and feed and tool marks within the cusps. Therefore, it becomes difficult to incorporate the effects of surface character …
View article: Testing a novel FRP railway footbridge
Testing a novel FRP railway footbridge Open
Responding to the urgent need to replace pedestrian level crossings with footbridges on the UK rail network, a fibre reinforced polymer (FRP) bridge has been designed. This novel design incorporates a pretensioned, modified Warren truss st…
View article: Development of hook and eye fittings for registrations arms on the UK rail network
Development of hook and eye fittings for registrations arms on the UK rail network Open
Associated Utility Supplies (AUS) Ltd conducted a design and development project which investigated the current failure modes of hook and eye fittings, the projected resulted in a new design with improved product life, wear resistance, per…
View article: Microstructural and interface properties of aluminium alloy coatings on alumina applied by friction surfacing
Microstructural and interface properties of aluminium alloy coatings on alumina applied by friction surfacing Open
Two large groups of materials, namely metals and ceramics, are used in mass quantities in today’s industry because of their outstanding properties. To achieve higher product performance dissimilar materials need to be combined in assemblie…
View article: Mechanical and Microstructural Analysis of Friction Surfaced Aluminum Coatings on Silicon Nitride Ceramic Substrates
Mechanical and Microstructural Analysis of Friction Surfaced Aluminum Coatings on Silicon Nitride Ceramic Substrates Open
The lack of suitable techniques for joining Si $$_{3}{\text{N}}_{4}$$ ceramics with metals has limited the usage of this otherwise outstanding material for composite applications. In this study, aluminum AlMgSi0.5 (EN AW-6060) was c…
View article: Computational Study of a Radial Flow Turbine Operates Under Various Pulsating Flow Shapes and Amplitudes
Computational Study of a Radial Flow Turbine Operates Under Various Pulsating Flow Shapes and Amplitudes Open
Radial flow turbines are extensively used in turbocharging technology due to their unique capability of handling a wide range of exhaust gas flow. The pulsating flow nature of the internal combustion engine exhaust gases causes unsteady op…
View article: Comparison of theoretical approaches to determine the stresses in surface mounted permanent magnet rotors for high speed electric machines
Comparison of theoretical approaches to determine the stresses in surface mounted permanent magnet rotors for high speed electric machines Open
High-speed electrical machines (HSEMs) are becoming more popular in applications such as air handling devices. Using surface-mounted permanent magnet (PM) rotors manufactured from rare earth metals, they provide benefits over their mechani…
View article: The impact of volute aspect ratio and tilt on the performance of a mixed flow turbine
The impact of volute aspect ratio and tilt on the performance of a mixed flow turbine Open
Current trends in the automotive industry towards engine downsizing means turbocharging now plays a vital role in engine performance. The purpose of turbocharging is to increase the engine inlet air density by utilising, the otherwise wast…
View article: Microstructure and mechanical properties of aluminium alloy coatings on alumina applied by friction surfacing
Microstructure and mechanical properties of aluminium alloy coatings on alumina applied by friction surfacing Open
By combining lightweight metal alloys with ceramics, it is possible to adapt material properties on stressed parts and thus increase stiffness and/or change the thermal resistance: yet joining such materials is problematic due to the poor …
View article: Evolution of flow characteristics in a centrifugal compressor with an increase in operating speed
Evolution of flow characteristics in a centrifugal compressor with an increase in operating speed Open
Developments in materials, manufacturing and computing methods have catalysed the generation of efficient compressor designs with higher specific power outputs. Centrifugal compressors have become pervasive in environments demanding a comb…
View article: A Review of the High-speed Permanent Magnet Rotor Stress Analysis used for Automotive Air-handling Machines
A Review of the High-speed Permanent Magnet Rotor Stress Analysis used for Automotive Air-handling Machines Open
Machines incorporating high-speed electrical machines (HSEM) are becoming increasingly common place in applications including air handling, energy storage and medical devices. They are of increasing interest within the automotive field for…
View article: Review of the High-speed Permanent Magnet Rotor Stress Analysis used for Automotive Air-handling Machines
Review of the High-speed Permanent Magnet Rotor Stress Analysis used for Automotive Air-handling Machines Open
Machines incorporating high-speed electrical machines (HSEM) are becoming increasingly common place in applications including air handling, energy storage and medical devices. They are of increasing interest within the automotive field for…
View article: Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor
Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor Open
Centrifugal turbomachines of smaller sizes operating at higher speeds have become pervasive due to the increased specific power and reliability achieved by improvements in manufacturing, materials and computational methods. The presence of…
View article: Finite element analysis to model ischemia experienced in the development of device related pressure ulcers
Finite element analysis to model ischemia experienced in the development of device related pressure ulcers Open
Pressure ulcers are a common occurrence of damage to skin. Severity ranges from slightly discoloured skin to full thickness tissue damage which can be fatal in some cases. Engineering effort, typically developing computational models had m…
View article: Making Improvements to Product Development within an SME
Making Improvements to Product Development within an SME Open
This paper shares the experiences of a UK based manufacturing small to medium sized enterprise (SME), embedding improvements to a process for new and existing product development (PD).Examples of the improvements include the deployment of …
View article: Mechanical Design of Rotors with Surface Mounted Permanent Magnets
Mechanical Design of Rotors with Surface Mounted Permanent Magnets Open
Electric machines with permanent magnet rotors are becoming increasingly popular due to the high power density that they offer relative to other configurations. Where the speed of rotation is high, the magnets are typically mounted on the …
View article: Analysis of leading edge flow characteristics in a mixed flow turbine under pulsating flows
Analysis of leading edge flow characteristics in a mixed flow turbine under pulsating flows Open
Current trends in the automotive industry towards engine downsizing means turbocharging now plays a vital role in engine performance. A turbocharger increases charge air density using a turbine to extract waste energy from the exhaust gas …
View article: Effect of Cusp Size, Depth and Direction on Stress Concentration
Effect of Cusp Size, Depth and Direction on Stress Concentration Open
Recently multi-axial machining technology has improved significantly. It has become a widely accepted method of manufacturing components with complex, free form surfaces. Solid billet materials with negligible internal defects are used in …
View article: Effect of Machining Cusps on the Stress Concentration Factor on Curved Surface
Effect of Machining Cusps on the Stress Concentration Factor on Curved Surface Open
Recently multi-axis machining technology has improved significantly. It has become a widely accepted method of manufacturing components with complex, free form surfaces. Solid billet materials with negligible internal defects are used in t…
View article: The Impact of Volute Aspect Ratio on the Performance of a Mixed Flow Turbine
The Impact of Volute Aspect Ratio on the Performance of a Mixed Flow Turbine Open
Current trends in the automotive industry towards engine downsizing mean turbocharging now plays a vital role in engine performance. A turbocharger increases charge air density using a turbine to extract waste energy from the exhaust gas t…