Abstract: A methodology based on fabric microst ructure was built to calculate the micro geometric parameters and predict the fiber volume fraction. A mechanical model was also established to predict engineering elastic constants.The influence of various woven parameters on the elastic properties was examined and analysed. The edgewise tensile and flatwise compression experimental samples were fabricated and experiments were performed to validate the modeling method, good agreement between the theoretical predictions and the experimental results demonst rates that the proposed model is correct .