Browsing Mechanical & Manufacturing Eng (Theses and Dissertations) by Title
Now showing items 1-20 of 211
-
3D Bioprinted Cartilaginous Templates as Developmentally Inspired Implants for Large Bone Defect Regeneration
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2022)Whilst bone possesses an inherent capacity for regeneration, defects above a critical size cannot heal on their own. Damaged or diseased bone can be treated using autografts or a range of different bone grafting biomaterials, ... -
3D bioprinting of cartilage-mimetic implants for biological joint resurfacing
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2020)A major challenge in the field of tissue engineering and regenerative medicine is the development of effective therapies for treating large cartilage or osteochondral defects and ultimately regenerating whole osteoarthritic ... -
3D Bioprinting of Developmentally Inspired Templates for Bone and Joint Regeneration
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)There is an urgent need to develop alternatives to synthetic joint prosthesis to promote the regeneration of diseased osteoarthritic joints. Cell based therapies have shown promise for repairing cartilage and bone; however, ... -
3D Bioprinting Strategies To Engineer Structurally Organised Meniscal Tissue Grafts
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2023)Lesions to the meniscus are common sports-related injuries that can lead to articular cartilage degeneration and osteoarthritis if left untreated. While surgical repair procedures and meniscal substitutes offer better ... -
A 3D printed acoustic metamaterial liner to reduce low-frequency aeroengine noise
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2023)As the level of air travel continues to increase, so too does the demand for better noise-reduction technologies for aircraft. The environmental noise produced by aircraft has been shown to have a significant adverse effect ... -
A biomechanical analysis of the trunk and spine during paediatric cerebral palsy gait
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2017)Movement pathologies in the lower limbs of children with cerebral palsy are well established in the literature. However, movement pathologies of the upper body, in particular the trunk, are less well defined. Mechanical ... -
A Bridgman Furnace Front Tracking Model
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2015)The Bridgman furnace is widely used in industry and research, mainly because it provides a means to directionally solidify materials in a controlled manner, so that the resulting microstructure, and hence material properties, ... -
A forward advancing wave expansion method for numerical solution of large-scale sound propagation problems
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007)The study of atmospheric somid propagation has become an important subject since noise polhition problems emerged as a highly relevant matter in several areas such as sociology, economics, regulations and standards. Modelling ... -
A new technique for vortex methods in computational fluid dynamics
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2002)The random vortex method is a Lagrangian technique which involves solving the stream function-vorticity formulation of the Navier-Stokes equations. Discrete vortex particles, which are created at the surface to satisfy ... -
A practical framework for strategic noise mapping
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2008)Environmental noise is a major form of pollution and it is estimated that at least one quarter of the population of the EU suffer a reduced quality of life due to exposure to noise. To address the problem the European Union ... -
A stochastic model of damage accumulation in acrylic bone cement : application to failure modelling of cemented hip replacement
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2003)Acrylic bone cement, used to fixate several forms of orthopaedic joint replacement prosthesis, has a variable fatigue resistance arising mainly from porosity. It is argued that deterministic modelling assumptions of ... -
A study of heat transfer in forced convective drying with the application of laser-induced fluorescence thermometry
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2016)Industrial drying is a highly energy-intensive process accounting for up to 25% of energy consumption in some developed countries. While there is a wide range of literature on the topic of drying, the majority of studies ... -
A study of the heat transfer processes and related flows of a synthetic jet impinging perpendicular to a heated surface
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)To maintain the development of modern technology and its thermally intensive processes, versatile methods of enhancing localised heat transfer are continually required. This need has resulted in an on-going drive to achieve ... -
A study of the role of oil additives in the failure of ball bearings
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2000)This thesis examines the influence that extreme pressure oil additives have in the failure of ball bearings. Additives are commonly used in lubricating oils to improve their properties. In recent years some sections of ... -
A validated computational fluid dynamics methodology for characterisation of fluid flow and heat transfer in unsteady jets
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2016)To improve reliability and avoid premature failure in electronic devices, more effective techniques must be used to dissipate the heat generated by devices. Thermal simulations can enable engineers to investigate and verify ... -
A validated shape optimization approach for maximizing the convective heat transfer from generic heat sink geometries
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2016)Improving the effectiveness of heat transfer devices is one of the most challenging and determinant processes for industrial situations involving energy transformation. Thermal simulations can enable engineers to try and ... -
Acceleration of engineering and scientific applications using trivial operand processing
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2010)A vast array of scientific and engineering problems require the solution of linear systems of equations of the form A* x = y , where A is the coefficient matrix of the system and y is a vector of unknowns and jc is a vector ... -
Active fluidic control of a cylinder in a cross-flow using synthetic jet actuation
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2016)The objective of this body of work is to establish the effectiveness of a simple synthetic jet actuator in modifying the drag forces experienced by a cylinder in a cross flow. This is achieved through the production of a ... -
Adaptation of growing bone to altered mechanical load : morphological change, structural strength and gene expression
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2004)Osteoporosis, a condition characterised by a loss of bone mass, is of increasing clinical interest in an aging population. Bone formation and growth are controlled by genetic, hormonal and biomechanical factors. This ... -
Adaptive Liquid Cooling Methods in Microchannel Heat Sinks
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2020)This work investigates the effect of implementing three varying cooling techniques for high heat flux electronics cooling. High heat fluxes are being experienced in data centres as the number of transistors per inch increases ...
