Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"natural resonance"”.
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Natural resonance extraction and annihilation filtering methods for radar target identification
… targets using annihilation filters based on the natural resonances of the targets. The Cadzow-Solomon signal processing algorithm is tested to determine its suitability for the task of extracting the poles from complex targets to a degree of accuracy required for successful implementation of an …
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Durability Analysis of Helical Coil Spring in Vehicle Suspension Systems
… evaluates the characteristics of vibration, i.e. natural resonance frequencies and corresponding mode shapes. The stress frequency response is generated after performing the harmonic analysis on the spring. Dynamics and performance of spring are analyzed over practical frequency range of 0 Hz to …
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A study of the wall vibrations excited during the playing of lip-reed instruments
… a Laser Doppler Vibrometer. The brass pipe’s natural resonance frequencies and bending mode shapes are established and compared with the velocity amplitude variation along the pipe induced by an artificially blown note. The induced wall vibrations are shown to occur at the harmonics of the …
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Current-induced torque driven ferromagnetic resonance in magnetic microstructures
… In the frequency range close to the natural resonance frequency of the magnetic moments (gigahertz), CIT can excite precessional motion of the magnetisation, a process known as ferromagnetic resonance (FMR). CIT can be parameterised by an effective magnetic field. By analysing the …
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Improvising pianists : aspects of keyboard technique and musical structure in free jazz - 1955-1980
… tones, their unique qualities of sustain and resonance and their changing patterns of distribution in this music; looking at 'space' firstly in the sense of the piano's natural resonance and the pianists whose work has explored this particular characteristic, and secondly, the physical space …
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The Amplification of Tsunamis by Mercury Bay, New Zealand
… tsunami hazard is of particular concern. The natural resonance periods (eigen periods) of Mercury Bay are determined by its geometry and depth, and tsunami waves that enter the Bay will be amplified when their frequencies match the resonant frequencies of the Bay. The combination of tide …
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Frequency Dependent Mechanical Properties of Elastic Metamaterials with Locally Resonant Microstructures
… effective continuum, it was found that the rod natural frequency distribution was changed and no natural resonance frequency in the band gap region of the corresponding metamaterial. Besides, the general wave amplitude transfer function was derived for wave propagation in layered structures, and …
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Resonance-Based Techniques for Microwave Breast Cancer Applications
… known that a finite-size scatterer has a set of natural resonances, which are uniquely determined by the physical properties of the scatterer. This is also the case for a breast tumor which can be regarded as a dielectric scatterer. Since the scatterer is naturally "tuned" at the resonances, it …
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The electron density : a bridge between exact quantum mechanics and fuzzy chemical concepts
… Electron Localization Function (ELF), and the Natural Bond Orbital (NBO) approach. Of these partitioning schemes, the theories according to Bader (AIM), to Becke and Edgecomb (ELF) and according to Weinhold (NBO and Natural Resonance Theory, NRT), respectively, were reviewed in detail …