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Radial variation of elastic properties of SCS-6 silicon carbide fiber

Published online by Cambridge University Press:  03 March 2011

Shamachary Sathish ,
John H. Cantrell  and
William T. Yost
Shamachary Sathish
Affiliation:
Analytical Services and Materials, Inc., 107 Research Drive, Hampton, Virginia 23666
John H. Cantrell
Affiliation:
NASA Langley Research Center, Mail Stop 231, Hampton, Virginia 23681-0001
William T. Yost
Affiliation:
NASA Langley Research Center, Mail Stop 231, Hampton, Virginia 23681-0001
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Abstract

The upper and lower bounds of the bulk, shear, and Young's moduli are calculated point-by-point along the radius of SCS-6 silicon carbide fibers using the Hashin-Shtrikman equations from considerations of the Auger spectra along the fiber radius. The calculated values are in agreement with measurements of the average Young modulus obtained over relatively large radial regions of the fiber using scanning acoustic microscopy (SAM). The validity of the Hashin-Shtrikman bounds calculations is enhanced by the agreement found between experimental SAM V(z) curves for fixed z along the fiber radius and the theoretical bounds of such curves obtained from the bounds of the calculated bulk and shear moduli.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 9 , September 1994 , pp. 2298 - 2303
Copyright
Copyright © Materials Research Society 1994

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References

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