JFET_V4_N2_RP6 Prediction of Engineering Constants of GFRP Angle Lamina Syed Altaf Hussain B. Sidda Reddy A.V. Hari Babu Journal on Future Engineering and Technology 2230 – 7184 4 2 64 70 Engineering constants, GFRP lamina, Finite element method, Artificial neural networks Composite materials are engineered materials, are made from two or more constituent materials with significantly different physical and chemical properties. FRP composites are slowly emerging from the realm of advanced materials and are replacing conventional materials in a variety of applications. In the present work the mechanical properties Ex, Ey, ?xy , ?yz , ?zx and Gxy of continuous fiber GFRP angle ply lamina (Specially orthotropic lamina) are determined for three different fiber volume fractions using finite element method. A finite element model incorporating the necessary boundary conditions is developed and is solved using commercially available FEA package. A neural network model was developed using Neuro Intelligence package. The data set obtained from the FEA package was employed for training, validating and testing the neural networking model. The results obtained from the ANN architecture have been compared with the FEM results and some conclusions have been made. November 2008 - January 2009 Copyright © 2009 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=525