The initial elastic properties of two unidirectional ceramic matrix composite tows, comprised of continuous, cylindrical fibers surrounded by one or more matrices, have been calculated using three different methods. The first uses finite element (FE) analysis of the tow to calculate values for elastic and shear moduli and Poisson’s ratios in the three principal directions, and in the absence of confirmatory experimental data is regarded as the most accurate for a wide range of fiber/matrix geometries and materials. The other two models are (i) rule of mixtures, ROM/volume averaging and (ii) the approximate equations of Halpin-Tsai and analytical relations based on slab representation for composite materials that rely on the elastic properties and volume fractions of the constituent materials. Initial elastic properties of the tows determined by the FE method are presented, and they are compared with predictions made by the other two techniques.
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e-mail: d.r.hayhurst@manchester.ac.uk
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September 2012
Research Papers
Initial Elastic Properties of Unidirectional Ceramic Matrix Composite Fiber Tows
M. Blacklock,
M. Blacklock
Department of Mechanical, Aerospace, and Civil Engineering,
The University of Manchester
, George Begg Building C.004, Sackville Street, Manchester M13 9PL, UK
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D. R. Hayhurst
D. R. Hayhurst
Department of Mechanical, Aerospace, and Civil Engineering,
e-mail: d.r.hayhurst@manchester.ac.uk
The University of Manchester
, George Begg Building C.004, Sackville Street, Manchester M13 9PL, UK
Search for other works by this author on:
M. Blacklock
Department of Mechanical, Aerospace, and Civil Engineering,
The University of Manchester
, George Begg Building C.004, Sackville Street, Manchester M13 9PL, UK
D. R. Hayhurst
Department of Mechanical, Aerospace, and Civil Engineering,
The University of Manchester
, George Begg Building C.004, Sackville Street, Manchester M13 9PL, UK
e-mail: d.r.hayhurst@manchester.ac.uk
J. Appl. Mech. Sep 2012, 79(5): 051020 (11 pages)
Published Online: July 2, 2012
Article history
Received:
November 5, 2011
Revised:
November 29, 2011
Posted:
February 1, 2012
Published:
July 2, 2012
Online:
July 2, 2012
Citation
Blacklock, M., and Hayhurst, D. R. (July 2, 2012). "Initial Elastic Properties of Unidirectional Ceramic Matrix Composite Fiber Tows." ASME. J. Appl. Mech. September 2012; 79(5): 051020. https://doi.org/10.1115/1.4005585
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