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Inherently Smart Laminates of Carbon Fibers in a Polymer Matrix

Published online by Cambridge University Press:  10 February 2011

Xiaojun W Ang  and
D. D. L. Chung
Xiaojun W Ang
Affiliation:
Composite Materials Research Laboratory, Furnas Hall, State University of New York at Buffalo, Buffalo, NY 14260-4400
D. D. L. Chung
Affiliation:
Composite Materials Research Laboratory, Furnas Hall, State University of New York at Buffalo, Buffalo, NY 14260-4400
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Abstract

Real-time monitoring of fatigue damage and dynamic strain in inherently smart andcontinuous unidirectional (0° and 90°) and bidirectional (0°/90°) carbon fiber epoxy-matrix composites by electrical resistance (R) measurement was achieved. Upon cyclic tension (0°) of 0° or 0°/90° composites, R (0°) decreased reversibly, while R perpendicular to the fiber layers increased reversibly, though R in both directions changed irreversibly by a small amount after the first cycle. Upon fatigue testing of the 0° composite at a maximum stress of 57–58% of the fracture stress, the peak R (0°) in a cycle irreversibly increased both in spurts and continuously, due to fiber breakage, which started at 30% of the fatigue life. For the 90° composite, R(0°) increased reversibly upon tension (0°) and decreased reversibly upon compression (0°).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 434: Symposium U – Layered Materials for Structural Applications , 1996 , 299
Copyright
Copyright © Materials Research Society 1996

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References

1. Konsztowicz, Krzysztof J. and Fontaine, Denise, J. Am. Ceramic Soc. 73 (10), 2809–2814 (1990).Google Scholar
2. Santos-Leal, E. and Lopez, R.J., Measurement Science & Technology 6(2), 188–195 (1995).Google Scholar
3. Ishida, Atsumu, Miyayama, Masaru and Yanagida, Hiroaki, J. Am. Ceram. Soc. 77 (4), 1057–1061 (1994).Google Scholar
4. Muto, Norio, Yanagida, Hiroaki, Miyayama, Masaru, Nakatsuji, Teruyuki, Sugita, Minoru and Ohtsuka, Yasushi, J. Ceramic Soc. Japan 100 (4), 585–588 (1992).Google Scholar
5. Wang, Xiaojun and Chung, D.D.L., Smart Mater. Struct., in press.Google Scholar