Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2001.301.304RadwanFae`q A.A. 3200113Decomposition of elastic constant tensor into irreducible parts is given. Elastic constant tensor norm and norm ratios for various anisotropic materials of the same or different symmetry are calculated. The norm of a tensor is used as criterion for comparing the overall effect of the properties of anisotropic materials and the norm ratios are used as criterion to represent the anisotropy degree of the properties of materials.]]>Ashman, R.B., S.C. Cowin, W.C. van Buskirk and J.C. Rice,198417349361Akgoz, Y.C., J.M. Farley and G.A. Sanunders,197334141149Bhagvantam, S.,1959pp: 134-136pp: 134-136Butabaev, S.M. and Y.I. Sirotin,19731710371040Cowin, S.C. and C.W. van Buskirk,1986198587Chung, D.H. and W.R. Buessem,19673820102012Christensen, N.I. and R. Ramananantoandros,19717640034010Fraijs, B.M. and A. de Veubeke,1979pp: 114pp: 114Heine, V.,1960pp: 308pp: 308Huntington, H.B.,1958pp: 67-71pp: 67-71Jerphagnon, J., D.S. Chelma and R. Bonnevlle,19781110031017Kittel, C.,19765th Edn.,pp: 95-210pp: 95-210Landau, L.D. and E.M. Lifshits,1959pp: 11pp: 11Martin, R.,1970140054011Meister, R. and L. Peseinich,19663741214125Nye, J.F.,1964pp: 131-149pp: 131-149Omar, M.A.,1975Papadakis, E.P.,1964111929Schouten, J.A.,1954pp: 157pp: 157Teodosio, C.,1982pp: 57pp: 57