Acoustic Emission Research on Thermal Shock Behaviors of Three-Dimensional C/SiC Composites in Different Environments

Abstract:

Article Preview

Three-dimensional (3D) carbon fiber reinforced silicon carbide matrix composites (C/SiC) were prepared by a low-pressure chemical vapor infiltration method. The thermal shock behaviors of the composites in different environments were researched using an advanced acoustic emission (AE) system. Damage initiation and propagation were easily detected and evaluated by AE. The thermal shock damage to C/SiC composites mainly occurred at the process of cooling and was limited at argon but unlimited at wet oxygen atmosphere. Also correlations have been established between the different damage mechanisms and the characteristics of acoustic emission signals obtained during thermal shock tests. In this way, the paper contributes to the development of the acoustic emission technique for monitoring of damage development in ceramic-matrix composites.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1585-1590

Citation:

P. Fang et al., "Acoustic Emission Research on Thermal Shock Behaviors of Three-Dimensional C/SiC Composites in Different Environments", Materials Science Forum, Vols. 546-549, pp. 1585-1590, 2007

Online since:

May 2007

Export:

Price:

$38.00

[1] F. Lamouroux, X. Bourrat, J. Sevely and R. Naslain: Carbon, Vol. 31 (1993), p.1273.

[2] J.C. Cavalier, A. Lacombe and J.M. Rouges: In: Bunsel AR, Lamicq P, Massiah A, editors, Developments in the science and technology of composite materials, Elsevier, London UK (1989), p.99.

[3] W.D. Kingery: J Am Ceram Soc, Vol. 38 (1955), p.3.

[4] D.P.H. Hasselman: Am Ceram Soc Bull, Vol. 49 (1970), p.1033.

[5] D.P. H Hasselman: Mater Sci Eng, Vol. 71 (1985), p.251.

[6] J.E. Webb and R.N. Singh: J. Am. Ceram. Soc., Vol. 79 (1996), p.2857.

[7] R.N. Singh and H. Wang: Composites Eng., Vol. 5 (1995), p.1287.

[8] P.K. Pandaa and T. S. Kannan: Science and Technology of Advanced Materials, Vol. 3 (2002), p.327.

[9] M.A. Hamstad: Proceedings of the fourth International Symposium on AE from Composite Materials (AECM-4), ASNT, (1992), p.436.

[10] J.A. Nixon, M.G. Phillips, D.R. Moore and R.S. Prediger: Composites Science and Technology Vol. 31 (1988), p.1.

[11] D. Valentin, P. Bonniau and A.R. Bunsell: Composites, Vol. 14 (1983), p.345.

[12] J. Peter, A.M. Wijnen and B.F. Janssen: Composites Science and Technology, 55(1995), p.405.