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Monotonic and Cyclic Fatigue Behavior of a High Performance Ceramic Fiber

Published online by Cambridge University Press:  14 March 2011

M. Kerr ,
J.J. Williams ,
N. Chawla  and
K.K. Chawla
M. Kerr
Affiliation:
Department of Chemical and Materials Engineering, Arizona State University, P.O. Box 876006, Tempe, AZ 85287-6006
J.J. Williams
Affiliation:
Department of Chemical and Materials Engineering, Arizona State University, P.O. Box 876006, Tempe, AZ 85287-6006
N. Chawla
Affiliation:
Department of Chemical and Materials Engineering, Arizona State University, P.O. Box 876006, Tempe, AZ 85287-6006
K.K. Chawla
Affiliation:
Department of Materials Science & Engineering, University of Alabama at Birmingham, Birmingham, AL 35294
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Abstract

Monotonic and cyclic fatigue behavior of fibers are of general interest, regardless of the end use of the product whether in a composite or in a fabric. Study of cyclic fatigue behavior of fibers is particularly difficult because of their small diameter (∼10 μm) and high aspect ratio. In this paper, we report some preliminary results of monotonic tension and tension – tension fatigue behavior of a ceramic fiber: Nextel 312 (Al2O3-SiO2-B2O3) fiber. This fiber has a nanocrystalline structure with B2O3 mostly in the form of a glassy phase. The tensile strength data of this fiber showed a Weibull modulus of 4.6, indicating a large degree of variability. Our experiments show clear indication of cyclic loading being more damaging than static loading for Nextel 312. The fracture surface observations of fatigues samples showed some distinctly different features from those observed in fibers subjected to monotonic tension.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 702: Symposium U – Advanced Fibers, Plastics, Laminates and Composites , 2001 , U6.5.1
Copyright
Copyright © Materials Research Society 2002

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References

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