Mechanical & Manufacturing Eng (Theses and Dissertations): Recent submissions
Now showing items 201-220 of 244
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Power and position-oriented process monitoring of freeform abrasive machining
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2013)Abrasive machining is used for the generation of freeform femoral implant surfaces in the biomedical industry. The abrasive machining operation is typified by high speed material removal in multiple axes, difficult-to-machine ... -
The development of a surface acoustic wave strain sensor
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)Multi sensors networks are becoming increasingly prevalent in modern engineering applications. In multi sensor networks, wireless sensors are preferred over traditional wired methods. Sensors based upon the surface acoustic ... -
Bubble growth dynamics including gravitational and electric field effects
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)In the present work the hydrodynamics of adiabatic gas bubble growth from a submerged orifice is investigated with the view of elucidating the interdependence of the bubble shape and the pressure field during growth and ... -
Passive mechanical properties of skeletal muscle in compression
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007)The compressive properties of skeletal muscle are of prime interest in applications where muscle tissue is submitted to compressive loads; e.g., to improve the design of protective equipment for vehicular occupants, to ... -
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 ... -
Mechanoregulation of bone formation : from embryogenesis to evolution
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007)In summary the author's thesis is that biophysical stimuli mechanoregulate ossification events through the action of mechanosensitive genes, where mechanoregulation is an ontogenetic process which has evolved. The author ... -
An investigation into the influence of cardiovascular stent design on the development of restenosis using the finite element method
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2004)Finite element models, which can determine the degree of vascular injury caused to a vessel by a stent and hence ascertain the propensity of that stent design to cause in¬stent restenosis, would be a valuable tool for both ... -
Iterative three-dimensional Helmholtz Equation solutions using the Wave Expansion Method
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007)Modelling sound propagation often can present difficult challenges due to computational demands. In general, the direct solutions of the system equations arising from the full field discretization of many three-dimensional ... -
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 ... -
The developement of novel scaffolds for tissue engineering with a range of structural and mechanical properties
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2009)Tissue engineering (or regenerative medicine) is defined as the application of scientific principles to the synthesis of living tissues using bioreactors, cells, scaffolds, growth factors, or a combination (Rose and Oreffo, ... -
An investigation into the causes of higher rates of restenosis in peripheral arteries compared with coronary arteries following stenting
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2010)The use of stenting in peripheral arteries has been limited by rates of in-stent restenosis and stent fracture considerably higher than seen in coronary arteries. Traditional balloon expandable stainless steel stents were ... -
Optimisation of process parameters and tooling during friction stir welding of AA2024-T3
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)Friction stir welding (FSW) was invented and experimentally proven at The Welding Institute (TWI) in 1991. The process involves the joining of two metal pieces without melting by joining their molecules together. The tool ... -
Bubble-induced Marangoni convection
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)Thermal Marangoni convection about a 1mm radius air bubble situated under a heated wall of constant temperature immersed in a silicone oil layer (Pr = 220) of constant depth 5mm was experimentally investigated using a flow ... -
On the acoustics of installed subsonic jets
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2009)The reduction of community exposure to aircraft noise is an important consideration in the design of future aircraft. A review is currently under way of novel aircraft configurations, which may exploit the fuselage, wings ... -
The relationship between blood perfusion and thermal measurements at the skin surface
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2006)Blood perfusion is defined as the volumetric flow rate of blood through a given volume of tissue. Blood perfusion measurements are an important clinical indicator for many medical conditions but to date there is no cost ... -
Aspects of the fatigue behaviour of acrylic bone cement
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2002)Polymethylmethacrylate bone cement is used to fixate many orthopaedic implants. However, it is a brittle material, prone to damage accumulation leading to cement cracking and prosthesis loosening. The damage accumulation ... -
Responses of bone cells to microinjury
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2012)Microdamage in bone has been implicated as a principal stimulator of bone remodeling through the release of numerous biochemical factors. Such factors initiate the bone resorbing and bone forming potential of the constitutive ... -
Simulation of tissue differentation during fracture healing
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2001)Fracture healing is a complex biological process during which, repair of the damaged tissues occurs so efficiently that the initial strength and anatomy of the bone are restored. Mechanical loading is believed to greatly ... -
The influence of chevrons on the turbulent characteristics of jets
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2010)To minimize the significant environmental impact of air travel a reduction in noise pollution from jet engines is required. This has led to a renewed focus on active and passive techniques which modify the turbulence ... -
Microphone array techniques for aeroacoustics
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2001)The capacity for source localisation and measurement in aeroacoustics can be enhanced through the use of a microphone array. Although arrays have been used in a variety of applications, there are a number of problems ...
