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  • About
  • 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.
161

Electroacoustics of a piezoelectric cylindrical transducer in a fluid-filled borehole

Chiou, Chwei-Chi 05 1900 (has links)
No description available.
162

The impact architectural on acoustical settings for sacred music in the Episcopal Parish Churches of Georgia

Joyner, John Edward, III 08 1900 (has links)
No description available.
163

Implications of heterogeneity in the shock wave propagation of dynamically shocked materials

LaJeunesse, Jeff 08 May 2015 (has links)
<p> The field of shock physics as a whole has only recently begun to pay particular attention to modeling heterogeneous materials under shock loading. These materials are important because of their practicality in terms of creating stronger, more shock resistant materials. To understand why they absorb shock impact energy better than homogeneous materials means that the small-scale processes that occur during the shock loading of these heterogeneous materials needs to be understood. Recent computational experiments, called mesoscale simulations, have shown that explicitly incorporating small-scale heterogeneous features into hydrocode simulations allows the bulk shock response of the heterogeneous material to be observed while not requiring the use of empirically determined constitutive equations. Including these features in simulations can offer insights into the irreversible mechanisms that dominate the propagation of shock waves in heterogeneous materials. </p><p> Three cases where the mesoscale approach for modeling the dynamic shock loading of heterogeneous materials are presented. These materials fall into three categories: granular - dry sand, granular with binder - concrete, and granular contained in a metal foam with a binder - granular explosive contained in an aluminum foam. The processes in which shock waves propagate through each material are addressed and relationships between the three materials are discussed. Particle velocity profiles for dry sand and concrete was obtained from Harvard University and Eglin Air Force Base, respectively. Mesoscale simulations using CTH are conducted for each type of heterogeneous material and the results are compared to the experimental data.</p>
164

Effects of materials on the acoustic properties of clarinet barrels

Cramer, Mark James 17 July 2015 (has links)
<p> This project was intended to provide empirical data to determine if materials (e.g. Cocobolo, Mopane, Grenadilla, Delrin, and Purpleheart) used to make clarinet barrels have an effect on sound quality and response. The following questions were addressed in this study: For clarinet barrels, do different types of exotic hardwoods and plastics have a measurable effect on the sound qualities (timbre) of the clarinet? Do different materials used to manufacture clarinet barrels have a measurable effect on the response (immediacy of tone and vibration to the player) of the instrument? Do different materials have a measurable impact on the intensity (volume/projection) of the clarinet? Will participants have a preference for specific materials tested? Results indicated that 25% of participants chose Mopane, 25% of participants chose Grenadilla, 25% of participants chose Delrin, and 25% of participants chose Purpleheart, meaning no material was preferred by a majority of the participants. No participant chose Cocobolo. Though there were commonalities among recordings of each material, the findings were not substantial enough to determine true differences in timbre, response to articulation, or intensity.</p>
165

Numerical simulation of guitar radiation fields using the boundary element method

Brooke, Matthew January 1992 (has links)
No description available.
166

Structure-borne sound transmission between coupled plates

Hopkins, Carl January 2000 (has links)
No description available.
167

The synthesis of point data and path data in estimating sofar speed

Johnson, Rockne Hart January 1968 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii, 1968. / Bibliography: leaves [31]-32. / v, 32 l maps, graphs
168

An investigation of acoustic impulse response measurement and modeling for small rooms

Chen, Zhixin. January 2007 (has links) (PDF)
Thesis (Ph. D.)--Montana State University--Bozeman, 2007. / Typescript. Chairperson, Graduate Committee: Robert C. Maher. Includes bibliographical references (leaves 100-106).
169

Topics in underwater detection /

Lourey, Simon J. January 2004 (has links)
Thesis (Ph.D.)--University of Melbourne, Dept. of Electrical and Electronic Engineering, 2005. / Typescript. Includes bibliographical references (leaves 151-158).
170

Alternative models of the sound field in a reverberant room /

Munro, Thomas Joseph. January 1982 (has links) (PDF)
Thesis (M.Eng.Sc.) -- University of Adelaide, Dept. of Mechanical Engineering, 1982. / Typescript (photocopy).

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