A Study on the Torsional Wave of Fiber-reinforced Composite Materials

Abstract

The impact characteristics of FRP are important for structures and other applications. In this article, a CFRP pole is used to study the effect of fiber orientation on the torsional strain wave rate. A method of forecasting torsional strain wave characteristic is subsequently suggested. An experiment is conducted to verify the theory and the calculation method. Good agreement is obtained between the theoretical and the experimental values of seven types of laminated composite cylinders, unidirectional (0,90) plies, and cross-plies (15, 30, 45, 60, 75). This demonstrates that the mathematical technique developed here is satisfactory for predicting the torsional strain wave of laminated composites. Torsional strain wave rates of laminated composites vary with fiber orientation angle.