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 375 for “"TA Engineering (General). Civil engineering (General)"”.
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Quantitative Analysis of Non-Linear Probabilistic State Estimation Filters for Deployment on Dynamic Unmanned Systems
… and explores the design, formulation and implementation of probabilistically orientated state estimation algorithms with focus towards unmanned system positioning and three-dimensional (3D) mapping. State estimation algorithms are considered an influential aspect of any dynamic system with …
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Development of a New High Performance Cold Mix Asphalt
… years, global climate change and energy shortages have become serious issues of common concern internationally. The majority of roads and highways are paved using hot mix asphalt (HMA) technology. The manufacture of hot mix asphalt is a key source of energy consumption, greenhouse gas …
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Through-Life Monitoring of the impact of vibration on the reliability of area array packages using Non- Destructive Testing
… day electronics. However, from the reliability standpoint, solder joints in these area array packages are often the weakest link. In case of harsh vibration environments like military and automobile applications, joint failure mainly occurs due to the high stress incurred during extreme …
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Fibre Modification for Concrete Reinforcement using a Novel Atmospheric Microwave Induced Plasma Torch (MIPT)
… of fibres was performed using contact angle measurement, scanning electron microscopy and atomic force microscope and the results are presented and analysed. Thus, the optimised plasma condition for each separate fibre is utilised. Fibres treated with optimised plasma condition …
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Evaluation of the Mechanical Strength of Bund Walls under the Catastrophic Failure of Storage Tanks via Fluid Structure Interaction
The catastrophic failure of storage tanks is a serious problem that can have disastrous effects on the environment, local community and the economy. Bund walls are structures used around storage tanks where hazardous substances are stored and handled for the purpose of retaining the losses in …
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An Experimental and Theoretical Study of Pile Foundations Embedded in Sand Soil
… achieve this, a series of comprehensive experimental pile load tests were carried out on precast concrete piles, steel closed-ended piles and steel open-ended piles, comprised of three slenderness ratios of 12, 17 and 25, using an innovative calibrated testing rig, designed and manufactured at …
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A coordinated UAV deployment based on stereovision reconnaissance for low risk water assessment
… consuming, slow and restrictive. This thesis takes advantage of the recent affordability and higher flexibility of Unmanned Aerial Vehicles (UAVs) to provide innovative solutions to the problem. The proposed solution involves having one UAV, “the leader”, equipped with sensors that are capable …
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Design of an Original Methodology for the Efficient and Economic Appraisal of Existing and New Technologies in Form Grinding Processes including Helical
… typical of that utilised in industry. The contact conditions of the helical grinding process were considered, and the workpiece geometry was designed to closely replicate the form and entry and exit conditions found in helical form grinding of screw compressor rotors. The equipment design …
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Non-invasive electromagnetic wave sensor for flow measurement and biphase application
Multiphase flow measurement is important in chemical processing, water treatment and oil & gas industry. The multiphase flow sensor proposed in this research utilizes the resonant frequencies that occur inside a cavity and the differences in the permittivity of the measures phases. By measuring …
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Development of a New Environmentally Friendly Glass Fibre Reinforced Cold Mix Microasphalt with High Resistance to Cracking and Deformation.
Nowadays, the pavement industry plays an important role in the global transportation infrastructure and stimulates economic growth in both advanced and emerging countries. Nevertheless, most of these transportation infrastructures are paved with using hot mix asphalt (HMA) technology. Apropos to …
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Numerical methods for the stress analysis of pipe-work junctions
… often the subject of multiple loads. acting simultaneously and at irregular intervals. Due to the nature and complexity of the loading. the subject has received a significant amount of study from designers and stress analysts to resolve some of the difficulties in stressing pressure structures. An …
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New wavelet based space-frequency analysis methods applied to the characterisation of 3-dimensional engineering surface textures.
… apparatus like a microscope gives a representation of a surface textures that can be seen as an image. This is actually an image representing the relief of the surface texture. From the image processing point of view, this problem takes the form of texture analysis. The introduction of the …
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Characterisation and Evaluation of Thermally Treated Recycled Glass for Mass Finishing and Superfinishing Processes
… recycling of glass is excellent in respect of sustainability and environmental efficiency. The aim of the study was to establish requirements for the high volume manufacture of thermally treated recycled glass preforms to satisfy stated performance criteria. Several powder characterization …
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Non-contact surface inspection
This thesis describes the development of a non-contact inspection system, used in providing a comparative method for gauging a surface. The purpose of this system is not to measure the 3-D shape of a part. The volume difference between the part to be inspected and a master, is merely part of the …
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Intelligent control for the centreless grinding of compliant, thin walled cylinders
… of computer control systems by the implementation of adaptive control techniques were considered. A manually controlled centreless grinding machine was automated and the mechanical capabilities of the machine were extended so that productivity was limited by process rather than machine …
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Development of a Novel Gradient-Force Tapered Fibre Optical Tweezers System for 3D Optical Trapping at Near Horizontal Fibre Insertion Angles
… Tweezers”. Furthermore, the use of fibre facilitates the decoupling of the optical trapping beam from the microscope optics, which provides further scope for the development of a portable optical trapping system, and the potential for uncomplicated integration with other advanced microscopy …
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