A Method to Evaluate the Elastic Properties of Ceramics-Enhanced Composites Undertaking Interfacial Delamination

Abstract:

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A micromechanical approach is developed to investigate the behavior of composite materials, which undergo interfacial delamination. The main objective of this approach is to build a bridge between the intricate theories and the engineering applications. On the basis of the spring-layer model, which is useful to treat the interfacial debonding and sliding, the present paper proposes a convenient method to assess the effects of delamination on the overall properties of composites. By applying the Equivalent Inclusion Method (EIM), two fundamental tensors are derived in the present model, the modified Eshelby tensor, and the compliance tensor (or stiffness tensor) of the weakened inclusions. Both of them are the fundamental tensors for constructing the overall constitutive law of composite materials. By simply substituting these tensors into an existing constitutive model, for instance, the Mori-Tanaka model, one can easily evaluate the effects of interfacial delamination on the overall properties of composite materials. Therefore, the present method offers a pretty convenient tool. Some numerical results are carried out in order to demonstrate the performance of this model.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

2513-2516

DOI:

10.4028/www.scientific.net/KEM.336-338.2513

Citation:

H. J. Chang and S. W. Zhan, "A Method to Evaluate the Elastic Properties of Ceramics-Enhanced Composites Undertaking Interfacial Delamination", Key Engineering Materials, Vols. 336-338, pp. 2513-2516, 2007

Online since:

April 2007

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$35.00

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[4] H.J. Chang and M. Nakagaki: Proc. of ICONE-10, Arlington, Virginia, USA (2002), No. 22017.

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0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 Volume fraction of Particles Perfect Sliding Debonding Fig. 3 Effects of delamination on overall elastic properties of composite materials.

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