Developments in Ceramic Materials Research

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172 Dimitris Skarlatos, Tilemachos Zakinthinos and Ioanis Koumanoudis [30] Saladin H. “Manual d’ art Musulman” vol. 1, 1907. [31] Donnet F. “Les poteries acoustique du Couven des Recollets a Anvers”, Anvers, 1897. [32] Stassov V.V. Izvestija , “Imperatorskago Archeologhi”, Petersburg. 1863. [33] Bulle H “I akoustiki tis Ellinikis Orthodoxis Eklisias” 1956 (In Greek, Translated from German. Original Title: Undersuchugen an Griechischen teater Munchen) [34] Papathanassopoulos B. “The acoustics of the Greek Orthodox Church” Athens, 1956 (In Greek) [35] Guyencourt V. “Memoire sur l’ ancienne eglise des Cordeliers d’Amiens” Amienes, 1891. [36] Minns G. W.W. “Acoustic Pottery. Norfolk Archaeology”. Vol. VII., Norwich, 1872. [37] Salomon E. “Notices sur l’ ancien Temple – Neuf et l’ancien gymnase de Strasbourg”, Strasbourg, 1876. [38] Makerprang M. “Lydpotter I danske kirke” Köpenhamn, 1905. [39] Murphy D. “Archaeological acoustic space measurement for convolution reverberation and auralization applications” Proc. of the 9 th Int. conference on Digital audio effects, September 2006, Montreal Canada. [40] Shroeder M. R. “New method of measuring reverberation time” J. Acoust. Soc. Am, 1965, vol 37, 1187. [41] Ingard Uno “On the theory and design of Acoustic resonators” J. Acoust. Soc. Am, November 1953, Vol 25, No 6. [42] Field C. D., Fricke F. R., “Theory and application of quarter –wave resonators. A prelude to their use for attenuating noise entering buildings through ventilation openings” Applied Acoustics, 1998, vol 53 No 1-3. [43] Alster M. “Improved calculation of resonant frequencies of Helmholtz resonators” Journal of sound and vibration, 1972, vol 24(1), 63-85. [44] Mohring J. “Helmholtz resonators with large aperture” Acustica, November 1999, Volume 85, Issue 6, Pages 751-763. [45] Tang S.K “On Helmholtz resonators with tapered necks” Journal of Sound and vibration, 2005, vol 279, 1085-1096. [46] Kinsler L., Frey A., Coppens A., Sanders J. “Fundamentals of Acoustics” 1982, Willey. [47] Gilford C. L. “Helmholtz resonators in the acoustic treatment of broadcasting studios” British Journal of Applied Physics, March 1952, vol. 3, 86-92. [48] Kuttruft H. “Room Acoustics” Elsevier Applied Science third Edition, 1991. [49] Skarlatos D., Zakinthinos T. “The effect of resonators on the acoustics of coupled spaces” Euronoise 2006, Tampere, Finland. [50] Zakinthinos T Skarlatos D. “The effect of ceramic pots on the acoustics of old orthodox churches” Applied acoustics 2007 (In press).
In: Developments in Ceramic Materials Research ISBN 978-1-60021-770-8 Editor: Dena Rosslere, pp. 173-209 © 2007 Nova Science Publishers, Inc. Chapter 6 MODELING OF THERMAL TRANSPORT IN CERAMICS MATRIX COMPOSITES M. A. Sheik ∗ School of Mechanical, Aerospace and Civil Engineering The University of Manchester P O Box 88, Sackville Street Building Manchester M60 1QD, United Kingdom ABSTRACT Modelling and analysis of a unique geometrically representative Unit Cell has been shown here as the key to predicting the macro thermal transport behaviour of composites, which otherwise requires the employment of a vast experimental infrastructure. Sophisticated materials, such as woven Ceramic Matrix Composites (CMCs), have very complex and expensive manufacturing routes, used by just a few research organizations. This broadens the scope of a modelling strategy to be adopted for the characterization of all possible material designs with various possible constituent volume fractions by using a commercial FE code such as ABAQUS. The variation of material constituents can be incorporated in the Unit Cell model geometry with subtle manipulation of key parameters dictated by quantitative SEM morphological data. Two CMC material systems have been modeled in the present study. The first material has been analysed with a focus on the homogenization of microscopic constituent material properties into the macroscopic thermal transport character. The actual set of property data used for the Unit Cell of this material is obtained from the cumulative property degradation results extracted from the analyses of three sub-models based on the material’s unique porosity data. After validating the modeling methodology through a comparison with the experimental data, a geometrically more challenging CMC is modelled with a detailed incorporation of its morphological complexity in order to predict its macroscopic thermal transport behavior. Finally, it is shown how these models can be more efficiently analysed in a multiprocessing parallel environment. ∗ Tel: +44 (0) 161 306 3802; Fax: +44 (0) 161 306 3803; E-mail: m.sheikh@manchester.ac.uk
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PREFACE Ceramics are refractory, in
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Preface ix crystals is discussed. A
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