A STUDY ON DYNAMIC BEHAVIOR OF Cf/SiC COMPOSITES

The dynamic behavior for the fabrication of carbon fiber reinforced SiC matrix composites(Cf/SiC) is investigated by the theory and experiment. The governing differential equation of a composite beam is derived via Hamilton's principle. The Cf/SiC composites have been fabricated by a liquid pha...

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Bibliographic Details
Published in:International journal of modern physics. Conference series 2012, Vol.6, p.652-657
Main Authors: SON, IN SOO, LEE, SANG PILL
Format: Article
Language:English
Subjects:
Nanostructures and Functional Materials (Room G)
Online Access:Get full text
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Summary:The dynamic behavior for the fabrication of carbon fiber reinforced SiC matrix composites(Cf/SiC) is investigated by the theory and experiment. The governing differential equation of a composite beam is derived via Hamilton's principle. The Cf/SiC composites have been fabricated by a liquid phase sintering process, using the ultra-fine SiC particles and oxide additive materials. The SiC based materials are fabricated by using a commercial SiC powder with an average size of about 0.3µm. An Al2O3-Y2O3-SiO2 powder mixture is used as a sintering additive. The compositional ratio (Al2O3/Y2O3) and its total amount (Al2O3+Y2O3) of additive materials are 1.5 and 10 wt%, respectively. Especially, the content of PVB is changed from 0 wt% to 10 wt%. The SiC based materials are sintered at the temperature of 1820°C under 30 MPa for 1 hr. In this study, the effect of content of PVB on the natural frequency and mode shape is obtained. Finally, the relationship between natural frequency and mechanical property of Cf/SiC composites is discussed.
ISSN:2010-1945
2010-1945
DOI:10.1142/S2010194512003923