148 ACTA MECHANICA SOLIDA SINICA 9 Liu H.Y., Hsu S.M., Fracture behavior of multilater silicon nitride/boron nitride ceramics. J. Am. Ceram. Soc,1996,79(9):2452-2457. 10 Tong J.F., Chen D M, Liu X.G., Preparation of AL2 O3(YAG)/LaPO4 laminated ceramics composites. J of Aeronautical Materials, 2006, 26(3 ): 163-167 11 Li D.Y., Qiao G.J. and Jing Z.H., Recent development in research of laminated ceramic composites. J. Inorganic Materials, 2002, 17(1): 10-16 12 Guo H, Huang Y and Li J B, Properties and structure of Si3N4 laminated composite ceramics.. Chinese Ceramic Society, 1997, 25(5): 532-536. 3 Cai S.Y., Li J. L. and Xie Z.P., The effect of interface on the properties of Si3N4 laminated composite ceramics.J Comp. Mater., 1999, 16(2):110-115 [14 Tan Y, Yang H and Ge M. Z, Technique of preparation of laminated composite ceramic and the properties of its interface. Journal of Ceramics, 1997, 18(2): 113-117. 15 MISTRAS 2000, Users Manual. Princeton(NJ): Physical Acoustics Corporation, 1995· 148 · ACTA MECHANICA SOLIDA SINICA 2007 [9] Liu H.Y., Hsu S.M., Fracture behavior of multilater silicon nitride/boron nitride ceramics. J. Am. Ceram. Soc., 1996, 79(9): 2452-2457. [10] Tong J.F., Chen D.M., Liu X.G., Preparation of AL2O3(YAG)/LaPO4 laminated ceramics composites. J. of Aeronautical Materials, 2006, 26(3): 163-167. [11] Li D.Y., Qiao G.J. and Jing Z.H., Recent development in research of laminated ceramic composites. J. Inorganic Materials, 2002, 17(1): 10-16. [12] Guo H., Huang Y. and Li J.B., Properties and structure of Si3N4 laminated composite ceramics. J. Chinese Ceramic Society, 1997, 25(5): 532-536. [13] Cai S.Y., Li J.L. and Xie Z.P., The effect of interface on the properties of Si3N4 laminated composite ceramics. J. Comp. Mater., 1999, 16(2): 110-115. [14] Tan Y., Yang H. and Ge M.Z., Technique of preparation of laminated composite ceramic and the properties of its interface. Journal of Ceramics, 1997, 18(2): 113-117. [15] MISTRAS 2000, Users Manual. Princeton (NJ): Physical Acoustics Corporation, 1995