Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"tyres"”.
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Flow Around Cambered and Yawed Pneumatic Tyres
An investigation has been conducted to study the flow around a deformed pneumatic tyre. An experimental rig is presented which enables an isolated tyre with Formula One inspired wheel geometry to be towed through a water towing tank at variable axle height, camber and yaw, with a highly accurate …
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Fuels from tyres by pyrolysis in molten salts
The current annual arisings of used car/van tyres in the U.K. has been found to be around 25m (188,000 tonnes). After the established reuse industries have taken their requirements this leaves 13.5m (102,000 tonnes) waste tyres; a quantity that can no longer be satisfactorily tipped. Laboratory …
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The Co-Construction of Properties in a Machinic-Complex: A study of the Car and Dunlop Pneumatic Tyres 1900-1925
… examines the development of Dunlop pneumatic tyres and the car 1900- 1925. It explores the transformation of these artefacts from 'unreliable', 'crafted' luxuries, to 'reliable', 'scientific' products for a middle class market through a process of co-construction. It argues that through the …
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Exploring waste tyre problems and sustainable waste management in the Tunisian context
Waste tyres represent one of the environmentally damaging fractions of the solid waste stream in Tunisia, where the problem of inefficient waste tyre management is endemic. This is easily identified by the piles of accumulating tyre waste located on both sides of many streets and in illegal places; …
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Investigation into the use of waste tyre shreds in reinforcement of sandy soils in South Africa
End-of-life tyres are a disposal problem resulting from the large volumes produced worldwide every year. Waste tyres are difficult to manage because of their sheer volume and the potential impacts on human health and environment. These discarded tyres, currently stockpiled and dumped in the open, …
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Lateral tyre forces on off-road surfaces
A successful model for off-road tyres must be reliable, efficient and capable of reproducing and predicting the main system phenomena. Mathematical models are proposed for longitudinal, lateral and combined lateral and longitudinal force generation characteristics of off-road tyres. For a better …
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Investigation of Severe Abrasive Truck Tyre Wear
In the design of tyres, rolling resistance and wear resistance cannot be optimized at the same time. Tyres with high rolling resistance have good wear performance and good adhesion, whereas tyres with low resistance have poor wear performance and poor adhesion. It is therefore necessary to …
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Determination of the power losses on a tyre-mounted ore-grinding mill
… pulleys, a differential gear set, the tyres, a shell and a disc brake sub-assembly. The tyres used to drive the shell can either be of the pneumatic or solid rubber types. The model mill was designed such that the tyre parameters required in the theoretical solution for power losses, …
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Generation, Characterisation and Potential Health Effects of Tyre Wear Particles
Every time we drive, as our tyres turn on tarmac, the rubber surface wears away, releasing micro and macroscopic tyre wear particles into our environment. Tyre wear particles are rapidly becoming a significant contributor to urban and suburban air pollution, driven by the move away from internal …
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Active noise control in a luxury vehicle
… random uncorrelated forces were applied on the tyres for analysing andevaluating ARNC systems. In terms of feedforward control, a computer modelof a causal adaptive feedforward system was used to investigate the relationshipbetween the locations, DoF and the performance of the control system.An …
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High Fidelity Modelling of Motorcycle Dynamics
… fidelity real time model of the motorcycle and tyres in their control strategies. The use of such a model would assist in integrating separate strategies into an overall vehicle stability strategy. Furthermore, the development of racing and high performance road motorcycles has traditionally …
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Measuring of noise and wearing of quiet surfaces
… standard it is suggested that four different tyres representing different vehicle types should be used. In Finland the method was modified so that measurements are done with one slick tyre (ASTM E 524). This method is called CPXmod. In this research it was recommended that SPBmod-method should …
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The forensic reconstruction of road traffic accidents
… effects as weather, road surface and the type of tyres to be accounted for.
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A communication perspective of how local government is equipped to interact with its public: a study of the Ulundi Municipality
… angry residents blocked roads and began burning tyres and throwing stones against the lack of services in their communities. This led to clashes with the police. Dissatisfaction with service delivery is the primary cause of civil unrest. Nepotism in conjunction with bribery and corruption are key …
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Practice makes imperfect: a discussion of revenue practice note 24 and related issues
… the cost of repairs, servicing, lubrication and tyres).
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Practice makes perfect: a discussion of revenue practice note 24 and related issues
… the cost of repairs, servicing, lubrication and tyres).
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Human response to vibration from earthmoving machines.
… also provided evidence that the large pneumatic tyres are the sources of the low frequency vibration.
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Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver
… LQR however, fails to stabilise the vehicle as tyres saturate. The formulation is extended to improve its robustness. Full nonlinear optimisation with direct transcription is used to derive a controller that can stabilise a vehicle at the handling limit under the action of disturbances. The …
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Characterisation of network structure in recycled rubber
… amount of untreated crumb can be used in new tyres due to significant property loss. The de-vulcanisation process offers the potential for providing high quality recycled material that can be used as a substitute for virgin rubber. Rubber materials produced during industrial trials that formed …
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Dynamic Analysis of Alternative Suspension Systems for Sport Motorcycles
… through non-linear simulations with delayed step tyres inputs. Appropriate values of the interconnection passive components for different possible mechanical implementation are found by means of optimization processes. Linear stability analyses are performed for each of the different optimal …
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