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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 241 to 250 of 3546 (0.04 seconds)Spelling suggestions: "subject:"acoustic"" "subject:"coustic""
| 241 |
Detection of transverse cracking in a hybrid composite laminate using acoustic emissionJong, Hwai-jiang, 1962- 07 July 2011 (has links)
Not available / text
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| 242 |
Articulatory-acoustic relation in Cantonese vowelsSo, Ka-pak., 蘇家柏. January 2003 (has links)
published_or_final_version / abstract / toc / Linguistics / Master / Master of Arts
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| 243 |
Ultrasonic reflection tomography over circular aperture廖威賢, Liu, Wai-yin. January 1992 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
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| 244 |
The stability of pitch synthesis filters in speech coding /Lam, Victor T. M. January 1985 (has links)
No description available.
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| 245 |
Thermo-acoustic Velocity Coupling in a Swirl-stabilized Gas Turbine Model CombustorCaux-Brisebois, Vincent 21 November 2013 (has links)
The research presented herein describes the coupling of acoustic and heat release fluctuations in a perfectly-premixed swirl-stabilized combustor by analysis of simultaneous high-repetition-rate laser diagnostics data. Nine cases are studied, varying the thermal power and the equivalence ratio. Proper orthogonal decomposition (POD) of the velocity data shows that cases with higher amplitude thermoacoustic oscillations have flow fields containing helical vortex cores (HVC); these cases are further analysed to determine the driving mechanisms of the oscillations. Flow and flame statistics are compiled as a function of both the phase in the thermoacoustic cycle and a phase representing the azimuthal position of the HVC relative to the measurement plane. These data are used to spatially map the thermoacoustic energy transfer field, as described by the Rayleigh integral. It is found that periodic deformations of the HVC cause large-scale flame motions, resulting in regions of positive and negative energy transfer.
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| 246 |
Thermo-acoustic Velocity Coupling in a Swirl-stabilized Gas Turbine Model CombustorCaux-Brisebois, Vincent 21 November 2013 (has links)
The research presented herein describes the coupling of acoustic and heat release fluctuations in a perfectly-premixed swirl-stabilized combustor by analysis of simultaneous high-repetition-rate laser diagnostics data. Nine cases are studied, varying the thermal power and the equivalence ratio. Proper orthogonal decomposition (POD) of the velocity data shows that cases with higher amplitude thermoacoustic oscillations have flow fields containing helical vortex cores (HVC); these cases are further analysed to determine the driving mechanisms of the oscillations. Flow and flame statistics are compiled as a function of both the phase in the thermoacoustic cycle and a phase representing the azimuthal position of the HVC relative to the measurement plane. These data are used to spatially map the thermoacoustic energy transfer field, as described by the Rayleigh integral. It is found that periodic deformations of the HVC cause large-scale flame motions, resulting in regions of positive and negative energy transfer.
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| 247 |
Application of acoustic emission techniques to fabricsMorrison, William Ogburn January 1976 (has links)
No description available.
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| 248 |
Application of impedance tube technique in the measurement of burning solid propellant admittancesSalikuddin, Mohammed 05 1900 (has links)
No description available.
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| 249 |
Acoustic emission analysis of woven graphite-epoxy composite materialsClinton, Raymond Garland 12 1900 (has links)
No description available.
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| 250 |
Low-voltage SAW amplifiers on multilayer GaAs/ZnO substratesCameron, Thomas P. 08 1900 (has links)
No description available.
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