Case Studies
Improving the Aerodynamic Performance of a Two Man Bobsled
Wind-tunnel testing was used to obtain an assessment of the "baseline" performance of a full-scale bobsled. The aerodynamic development of the bobsled was then carried out using a quarter scale model after calibration against the full scale results. The design of the bobsled was developed iteratively using flow visualisation techniques in conjunction with aerodynamic force measurements. Potential design modifications were made to the quarter scale model whilst in the wind-tunnel in order to rapidly arrive at a solution with improved aerodynamic performance whilst remaining within the competition rules. The end result was a 35% reduction in drag. For a full copy of this case study please contact us and quote reference EECS01
Development of a Novel Wheel Concept for Racing Bicycles
Wind tunnel testing was used to develop and test a novel low-drag racing wheel. The aerodynamic performance of the new wheel concept was developed using flow visualisation and an aerodynamic force balance. The wheel was then rapidly prototyped and compared against racing wheels currently in use. The new wheel was found to reduce the overall drag of the bicycle at the speeds tested. For a full version of this case study please contact us and quote reference EECS02.
Development of Simulation Tools to Aid in the Design of Traffic Acoustic Barriers
Traffic related sound can have a serious detrimental effect on those living close to major routes. This study developed a computational tool capable of predicting the performance of acoustic barriers in various conditions including high winds. Computational flow modelling removed the need for acoustic barriers to be tested in situ which would have required the manufacture and testing of costly prototype barriers. The modelling methodology also permits barrier designs to be evaluated rapidly within a short timescale. For a full version of the case study please contact us and quote reference EECS03
The Effect of Heat Treatment on Metal-Metal Surface Replacement
The life span of a Total Hip Replacement is affected by wear. This study developed a new aggressive testing regime to test the wear characteristics of the hip replacement. This regime simulates the more aggressive wear induced by active patients that is not accounted for in traditional testing procedures. Once validated, this new testing methodology was used to assess the efficacy of alternative heat treatment methodologies used on components of the hip replacement. By using a multi-disciplinary approach we were not only able to assess the performance of the product but were also able to develop a tool required to simulate the loading scenario more accurately. For a full copy of this case study please contact us and quote EECS05
The Development of a System to Remove Ceramic Liner for a Hip Joint
Total Hip Replacements have a limited life span and sometimes require revision surgery. During this precedure, worn components are removed from the prosthetic and replaced by new components. However the ceramic liner of a hip replacement is difficult to remove. This study reviewed potential new removal methods, and examined the tools required. An optimum removal/replacement methodology was identified and validated. This study shows that design development is not limited only to components, but can apply also to procedures and precesses. For a full copy of this case study please contact us quoting EECS06
Development of an In-situ Technique to Measure the Stiffness of Cartilage
Cartilage stiffness is associated with Osteoarthritis, with changes in stiffness preceding visual degeneration. Test facilities were used to develop a device to measure the stiffness of cartilage in situ. This information was then used to develop a software tool that could map the stiffness results on a surface map of the knee and so determine regions of potential concern. This multi-disciplinary approach, using both testing and computer modelling enables wear to be monitored over time. For a full copy of this case study please contact us quoting EECS07
Friction Testing of Metal Implant Coatings
The wear of a hip replacement causes particles to be released into the gap between components. Not only does this in turn increase wear but it can also lead to absorption into the body and further complications. Test facilities were used to evaluate the weight loss of ten different samples of a potential coating to evaluate performance under simulated loading conditions. This permitted a range of potential materials to be assessed prior to full scale manufacture, unsuitable materials were eliminated prior to the next stage of development. This methodology can be applied to many areas of manufacturing engineering. Please contact us for a full copy of this case study quoting reference number EECS08
Development of an Optimal Patient Support Surface
Bedsores are an issue for patients undergoing prolonged bed rest. This study aimed to develop a mattress that actively alters the profile of the bed surface. Rather than use a random pattern of surface changes, the surface profiles were optimised using an experimental rig that developed an optimised actuation pattern. In this way the device can be programmed to provide optimum support profiles based on the needs of the patient. The use of an experimental rig in this way permitted the efficacy of the device to be tested cost effectively at prototype stage. For a full copy of this case study please contact us quoting reference EECS09
