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Interface Properties for Ceramic Composites from a Single-Fiber Pull-Out Test

Published online by Cambridge University Press:  21 February 2011

Elizabeth P. Butler ,
Edwin R. Fuller Jr.  and
Helen M. Chan
Elizabeth P. Butler
Affiliation:
Ceramics Division, Nat'l Inst. of Standards & Tech., Gaithersburg, MD 20899
Edwin R. Fuller Jr.
Affiliation:
Ceramics Division, Nat'l Inst. of Standards & Tech., Gaithersburg, MD 20899
Helen M. Chan
Affiliation:
Dept. of Materials Science & Eng., Lehigh University, Bethlehem, PA 18015
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Abstract

An experimental approach has been developed using a single-fiber pullout test to measure intrinsic interface properties for ceramic composites. The properties are determined from a pull-out, force-displacement curve, which is directly related to reinforcement toughening via fiber/matrix debonding and frictional pull-out. They were evaluated for a model composite system of continuous SiC fibers with various surface treatments in a borosilicate glass matrix. For the processing conditions used, the interface fracture toughness and the interface frictional shear resistance were found to be 1.0 ± 0.5 J/m2 and 3.3 ± 0.6 MPa, respectively, for as-received fibers. Experiments conducted with long embedded fiber lengths allowed the shear resistance to be deconvolved into an interface friction coefficient of 0.05 ± 0.01 and an initial fiber-clamping pressure of 65 ± 6 MPa. Nitric acidwashed fibers gave an increased interface toughness of 3.6 ± 0.1 J/m2 and friction coefficient of 0.08 ± 0.02, but nearly the same initial clamping pressure, 72 ± 12 MPa. Calculations of the clamping pressure from the fiber/matrix thermal expansion mismatch and from stress birefringence measurements in the glass were in general agreement with this value.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 170: Symposium N – Interfaces in Composites , 1989 , 17
Copyright
Copyright © Materials Research Society 1990

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References

1. Marshall, D.B. and Ritter, J.E., “Reliability of Advanced Structural Ceramics and Ceramic Matrix Composites, ” Am. Ceram. Soc. Bull., 66 [2], 309–317 (1987).Google Scholar
2. Rice, J.R., “A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks,” J. Appl. Mech., 35, 379–386 (1968).Google Scholar
3. Broutman, L.J., “Measurement of the Fiber-Polymer Matrix Interfacial Strength,” in Interfaces in Composites, edited by Salkind, M.J., STP 452, Am. Soc. for Testing and Materials, Philadelphia, 1969, pp. 27–41.Google Scholar
4. Gurney, C. and Hunt, J., Proc. Roy. Soc. (London), A299, 508 (1967).Google Scholar
5. Stang, H. and Shah, S.P., J. Mater. Sci., 21, 953 (1986).Google Scholar
6. Marshall, D.B. and Oliver, W.C., “Measurement of Interfacial Mechanical Properties in Fiber Reinforced Ceramic Composites,” J. Am. Ceram. Soc., Vol.70, [8], 542–48 (1987).Google Scholar
7. Gao, Y.-C., Mai, Y.-W. and Cotterell, B., “Fracture of Fiber-Reinforced Materials,” J. Appl. Math. and Phys. (ZAMP), 39, 550–572 (1988).Google Scholar
8. Butler, E.P., Fuller, E.R. Jr., and Chan, H.M., to be published.Google Scholar
9. Vedula, M., Pangborn, R.N. and Queeney, R.A., “Fiber Anisotropic Thermal Expansion and Residual Thermal Stress in a Graphite/Aluminum Composite,” COMPOSITES, Vol.19, [1], 55–60 (1988).Google Scholar
10. Cranmer, J.H., Tesoro, G.C., and Uhlmann, D.R., “Chemical Modification of Carbon Fiber Surfaces with Organic Polymer Coatings,” Ind. Eng. Chem. Prod. Res. Dev., 21, 185–190 (1982).Google Scholar
11. Photoelastic Stress Analysis, by Kuske, A. and Robertson, G., (John.Wiley & Sons, New York, 1974), pp. 111–114.Google Scholar
12. Technical Data Sheet for Textron Silicon Carbide Fibers, TEXTRON Specialty Materials, Lowell, MA, March 1988.Google Scholar
13. Goettler, R.W. and Faber, K.T., “Interfacial Shear Stresses in Fiber-Reinforced Glasses,” Composites Science & Technology, (1989), in press.Google Scholar
14. Flemming, J.W. “Optical Glasses,” in CRC Handbook of Laser Science & Technology, Volume 4: Optical Materials, Part 2, edited by Weber, M. J., CRC Press, Inc., 1986, pp. 69–83.Google Scholar