This thesis reviews the fundamental physical theory of ultrasound and UVP imaging techniques. The ultrasound vibration potential distribution (UVPD) model based on a static charge dipole field is established and analysed in a numerical method.
This thesis describes an investigation into the vibration serviceability of long-span and slender in-situ concrete floors, which are typically post-tensioned.
The active vibration reduction of plane and stiffened plates was investigated using a genetic algorithm based on finite element modelling to optimise the location of sensors and actuators. The main aspects of this work were: Development of a finite element model for a plate stiffened by beams with discrete sensors and actuators bonded to its surface. Development of a finite element program for.
The purpose of this thesis was to demonstrate the impor- tance of vibration measurements in modern day production systems.
RESEARCH: His research area is Vibration and Structural Dynamics by both Experiments and Analysis including FE model updating, Vibration control, and Health Monitoring techniques.
In this thesis, vibration analyses of electronic assemblies that consist of an electronic box, printed circuit board and electronic components are presented. A detailed vibration analysis of a real electronic assembly is performed by finite element methods and vibration tests.
The work described in this dissertation was carried out at the Cambridge University Engineering Department between October 1995 and May 1999. The project was suggested by Dr Hugh Hunt, who also acted as my research supervisor.
PhD Theses. Experimental and Numerical Investigation of Turbomachinery Blade Vibration Daniel Heller 2020. Alternate Passage Divergence of Wide Chord Transonic Fan Blades Yaozhi Lu 2020. Effect of planetary gearboxes on the dynamics of rotating systems Ali Tatar 2020. Influence of Inlet Distortion on Fan Aerodynamic Performance Wenqiang Zhang 2019. Solitons in cyclic and symmetric structures.
This thesis investigates the existence of the phenomena in several realistic atmospheric turbulence environments, generated using Computational Fluid Dynamic (CFD) engineering software and assimilated within a high-fidelity rotorcraft simulation, RASCAL.
Vibration generated by a gearbox carries a great deal of information regarding its health condition. This research aims primarily on the detection and diagnosis of tooth defects in a multistage gearbox based on advanced vibration analysis.
Vibration signatures of defective bearings and defect size estimation methods Alireza Moazen-ahmadi School of Mechanical Engineering The University of Adelaide Adelaide, South Australia, 5005 Australia A thesis submitted in fulfilment of the requirements for the degree of Ph.D. in Mechanical Engineering on the 18th March 2016. i Abstract Rolling element bearings are widely used in rotary.
He led a team and took vibration measurement of the London Eye and frequency measurement of the Govan Stand of the Ibrox Stadium before and after its extension, and provided consultancy on vibration of the Wembley Stadium. The other technical consultancies include vibration of the Coventry Stand, vibration assessment of dance floors and human loading. He worked as a consultant for solicitors.
PhD thesis, University of Liverpool. Caldwell, MN (2017) An investigation into the use of hoof balance metrics to test the reliability of a commonly used foot trimming protocol and their association with biomechanics and pathologies of the equine digit. PhD thesis, University of Liverpool.
In this thesis an analysis of a simple PCB (Printed Circuit Board) under combined thermal and vibration loading has been conducted in order to estimate the fatigue life of the solder joints. This includes a FEM (Finite Element Method) dynamic and thermal analysis of solder joints. The goal was to develop a feasible FEM based methodology for combined thermal and vibration loading. In order to.
In 2009 he received the MSc in Sound and Vibration from the Institute of Sound and Vibration Research (ISVR) at the University of Southampton, with a thesis on the design of directional loudspeakers for mobile devices. Following this he carried out his doctoral research in the Signal Processing and Control group of the ISVR on the subject of active control of the acoustic environment in.
The thesis presents a comprehensive investigation on vibrations of cracked beam structures and methodologies for crack identification. In order to determine the crack influence on structural dynamic characteristics correctly and efficiently, a vibration model for cracked beams is developed. The crack model assumes that the crack is always open during the dynamic response of the structure and.
PhD thesis, University of Glasgow. Click the button below for the full-text content In particular, piezoelectric materials, which demonstrate electro-mechanical coupling, are able to sense vibration and consequently can be integrated into a control scheme to reduce such vibration. Smart Materials and Structures. Vib. The distributed-parameter model for the beam-element system is discretized by.
Lepine, Julien (2016) An Optimised Machine Learning Algorithm for Detecting Shocks in Road Vehicle Vibration. PhD thesis, Victoria University. Text LEPINE Julien - Thesis.pdf Download (21MB) Abstract. In most countries, domestic transport of products is predominantly made on roads. Protective packaging is used to protect the freight from the shocks and vibration encountered during this type.
In this thesis, the structural design of six types of SRM segmented stator, each shrink- tted into an aluminium housing, are investigated, both in terms of the structural sti ness and resonant frequency. The impact of varying temperature on the resonant frequency of the stator is tested to show the rate of change of the resonant frequency and damping ratio of the stator structure. Furthermore.