Glass matrix composites

Bright, J.D., Shetty, D.K., Griffin, C.W. and Limaye, S.Y. (1989). Interfacial bonding and friction in SiC filament-reinforced ceramic and glass matrix composites. J. Am. Ceram. Soc. 72, 1891-1898. 

Fig. 4.24. Plot of partial debond stress, oJJ, as a function of debond length, f, for untreated SiC fiber-glass matrix composite. After Kim et al. (1991).

Numerical treatment of Eq. (4.104) gives Zmax values for the different composite systems as shown in Table 4.3. It is worth emphasizing that for the SiC fiber-glass matrix composites, z, ax values are very small relative to values, irrespective of the fiber surface treatments and when compared to other epoxy matrix based composites. 

Fig. 4.28. Comparisons between experiments and theory of (a) maximum debond stress, crj, and (b) initial frictional pull-out stress for SiC fiber-glass matrix composites (O) untreated fibers ( ) acid treated...

Specific results are calculated for SiC fiber-glass matrix composites with the elastic constants given in Table 4.1. A constant embedded fiber length L = 2.0 mm, and constant radii a = 0.2 mm and B = 2.0 mm are considered with varying matrix radius b. The stress distributions along the axial direction shown in Fig. 4.31 are predicted based on micromechanics analysis, which are essentially similar to those obtained by FE analysis for the two extremes of fiber volume fraction, V[, shown in Fig. 4.32. The corresponding FAS distribution calculated based on Eqs. (4.90) and (4.120), and IFSS at the fiber-matrix interface of Eqs. (4.93) and (4.132) are plotted along the axial direction in Fig. 4.32. 

To evaluate the stability of the debond process, the instability parameter, z,nax, is compared, z ax values calculated based on Eqs. (4.104) and (4.139) respectively for fiber pull-out and fiber push-out give z ax = 6-5, 6.2 mm for coated steel wire-epoxy matrix and z ax = 0.5, 0.49 mm for the untreated SiC-fiber-glass matrix composite... 

Fig. 4.39. Comparisons of initial debond stress,

Vaidya, R.U., Fernando, J., Chawla, K.K. and Ferber, M.K. (1992). Effect of fiber coating on the mechanical properties of a Nextel-480 fiber reinforced glass matrix composites. Mater. Sci. Eng. A151, 161 169. 

Glass matrix composites from solid waste materials. Journal of the European Ceramic Society, 21, 453-460. 

Fig. 1.2. Acoustic images of the same 7740/SiC glass matrix composite as in Fig. 1.1. (a) Section parallel to the axis of a fibre (b) section perpendicular to the fibre axes ... 

Table 3.8 Code 7740 glass-matrix composite coefficients of thermal expansion, CTE (average value between 22°C and 500°C)66...

SiC whisker-reinforced glass matrix composites were fabricated at the same process viscosity of the matrices and were well consolidated. All the composites were 30 wt% whiskers (No. 1) composites. The properties of these composites are given in Table 3.19. A comparison of the 1723 matrix composite and the 7052 composite shows that the latter is much weaker and has a lower modulus. Comparing the 7052 and 7740 systems, the 7740 composites are weaker still. A comparison of the 0080 and 1723 systems again shows a lower performance for the 0080 composite. 

Prewo, K.M. and Brennan, J J., High strength silicon carbide fibre reinforced glass-matrix composites , J. Mat. Sci., 15, 463 168 (1980). 

Boccaccini, A.R., Pearce, D.H., Janczak, J., Beier, W., Ponton, C.B. (1997), Investigation of cyclic thermal shock behaviour of fibre reinforced glass matrix composites using non-destructive forced resonance technique , Mater. Sci. Tech., 13, 852-858. 

Boccaccini, A.R., Kern, H., Dlouby, I. (2001), Determining the fracture resistance of fibre-reinforced glass matrix composites by means of the chevron-notch flexural technique , Nater, Sci. Eng., A308 (1/2), 111-117. 

Chlup, Z., Dlouhy, I., Boccaccini, A.R. (2001), Fracture toughness of thermally shocked SiC-fibre reinforced glass matrix composite , in Krenkel, W., Naslain, R., Schneider, H. (editors), High Temperature Ceramic Matrix Composites, Wiley, 463-468. 

K. M. Prewo and J. J. Brennan, High Strength Silicon Carbide Fiber-Reinforced Glass Matrix Composites, J. Mater. Sci., 15, 463-468 (1980). 

R. Chaim, L. Baum, and D. G. Brandon, Mechanical Properties and Microstructure of Whisker-Reinforced Alumina-30 vol% Glass Matrix Composite, J. Am. Ceram. Soc., 72[9], 1636-1642 (1989). 

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