Mechanical & Manufacturing Eng (Theses and Dissertations): Recent submissions
Now showing items 161-180 of 244
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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 ... -
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 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 ... -
Cartilage extraceullular matrix-derived scaffolds for joint regeneration
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2016)The goal of this thesis was to address key limitations associated with autologous chondrocyte implantation (ACI) for articular cartilage regeneration, specifically the need for two hospital stays, cell culture and high ... -
Vertical Upflow Convective Boiling: Flow Regimes, Heat Transfer and EHD Augmentation
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)This work focuses on vertical upflow convective boiling in a tubular heat exchanger. The work is experimental and utilizes a novel transparent sapphire test section coated with a transparent film of ITO. This allows ... -
Towards 3D bioprinting of anatomically accurate, mechanically reinforced cartilage templates for biological joint resurfacing
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)Osteoarthritis (OA) is a pervasive disease worldwide which affects the articular cartilage and the underlying bone in synovial joints such as the knee. Currently, the only treatment for a severely degenerated knee joint ... -
Identification and Measurement of Variables Affecting Component Lifetime: A Case Study of Polymer Degradation in the Biopharmaceutical Industry
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)Modern maintenance methods are dependent upon understanding and monitoring component degradation; however, many industrial situations exist where monitoring is impossible, and component degradation mechanisms are not well ... -
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, ... -
Predictions of Rotor Broadband Noise
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)This thesis presents an enhanced method for predicting aerodynamically generated broadband noise, produced by rotating machinery. The method improves on existing work for Vertical Axis Wind Turbine (VAWT) noise prediction, ... -
Validation of numerical methods in cold spray by direct nozzle-internal measurements of non-dilute particle motion
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)This work presents the research conducted during the development of a new optical particle velocity measurement in the field of Cold Spray. Cold Spray is a process for surface coating formation and additive manufacturing, ... -
Integrating non-viral gene therapy and 3D bioprinting for bone, cartilage and osteochondral tissue engineering
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)The repair of osteochondral defects, affecting both the articular cartilage and the underlying subchondral bone, is key for the effective recovery of joint homeostasis and the prevention of further cartilage degeneration ... -
Numerical investigation of woven wire mesh screens for landing gear aerodynamic flow and noise control
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)Recently, acoustic engineers, researchers, and relevant institutions seek to reduce noise levels associated with the aerodynamic complexities of an aircraft, particularly within close proximity to airport communities. The ... -
Characterisation and Reduction of Aircraft Landing Gear Noise
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2017)Aircraft noise has become an important concern in aviation design as it has a negative impact on the health of people living in the vicinity of airports. The total noise of an aircraft is generated by the engines and by ... -
Towards the development of a robotic dexterity assessment framework
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2017)The importance of flexible manufacturing processes and small-scale assembly is growing due to the increased pace of globalisation and greater consumer demands for product customisation. To address this trend, there has ... -
Computational investigations of mesenchymal stem cell ageing in mechanobiological simulations of tissue differentiation
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2014)Musculoskeletal health is a major determinant of the quality of life for the increasing aged population groups in our society. Improved healthcare is essential to ensure successful ageing and enhanced musculoskeletal health ... -
Manipulation of decellularized porcine scaffolds for tissue engineering vascular grafts
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2014)The prevalence of vascular disease continues to increase worldwide, the treatment for which relies heavily on diseased vessel replacement. Tissue engineering vascular grafts potentially offers a new solution for addressing ... -
The relationship between micro-structure and mechanical behaviour in passive skeletal muscle
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2014)This thesis presents and discusses investigative work performed on characterising the behavioural response of skeletal muscle tissue that was subjected to large deformations. The passive mechanical properties of muscle ... -
Vortex shedding lock-in of a 2-D wind turbine blade section at high angles of attack
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2015)The vortex shedding behaviour of a 2-D wind turbine blade section at high angles of attack (a = [35° —>145°]) has been investigated using unsteady RANS with the transition SST turbulence model. The Reynolds number is Re = ... -
Characterisation of the performance of single point diamond dressers in abrasive processes
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2014)This thesis presents in-depth investigation and analysis of the dressing of conventional grinding wheels. Grinding is used in the manufacturing industry to achieve a high surface finish which is an important constituent ... -
Tissue engineering scaled-up anatomically shaped osteochondral constructs for joint resurfacing
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2014)Partial and total joint replacements are the only surgical procedures currently available to treat articular cartilage degeneration associated with degenerative diseases such as osteoarthritis (OA). While these procedures ...
