Browsing Mechanical & Manufacturing Eng (Theses and Dissertations) by Title
Now showing items 143-162 of 219
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Noise source identification for ducted fans
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2006)Understanding combustion noise source mechanisms, designing efficient acoustic liners and optimising active control algorithms for noise reduction requires the identification of the frequency and modal content of the ... -
Numerical assessment of the performance of a wastewater pump under off-design operating conditions
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2021)Pumps are often key elements of industrial processes, and are commonly used to move water in municipal water schemes and in wastewater treatment of industrial effluents, representing a substantial energy cost. In the ... -
Numerical modelling of parametric resonance of a heaving point absorber wave energy converter
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2015) -
Numerical vibro/acoustic analysis at higher frequencies
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2003)Accurate modelling of steady-state acoustic and elastic wave phenom ena at higher frequencies, represents a major challenge for current numerical tools. Due to the large amount of computational effort and memory resources ... -
Objective and Quantitative acoustic-analysis of musicians dystonia
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2020)Musician s Dystonia (MD) is the most common movement disorder affecting musicians. Being a specific phenotype of Dystonia, MD is a focal, task-specific and painless disorder that affects motor control during musical ... -
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 ... -
On the development of scaffolds for bone tissue engineering
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007)Many of the current tissue-engineering scaffold-based strategies have suffered from limited cell depth viability when cultured in vitro, with viable cells existing within the outer 250-500 μm from the fluid-scaffold ... -
On the use of indentation technique to assess fracture properties of ceramics at the microscale
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)Classic methods to determine fracture properties of ceramics (like Single-Edge Notched Beam or Compact Tension) are accurate at the macroscale but inappropriate to estimate local fracture properties which are decisive at ... -
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 ... -
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 ... -
Plate-type Acoustic Valve Resonator for, Low-frequency Sound Absorption
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2024)Plate-type acoustic metamaterials with deep-subwavelength thickness have generated considerable enthusiasm for addressing low-frequency noise. These metamaterials can be tailored to obtain high absorption efficiency by ... -
Polymer / clay nanocomposites
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2012)Polymer/clay nanocomposites are a new class of materials with unique properties that are not shared by the pristine polymers or the conventional composites. These materials may present enhanced mechanical, themial, barrier ...
