Vibration Analysis of Woven Fiber Glass/Epoxy Composite Plates

Abstract

This work presents a combined experimental and numerical study of free vibration of woven fiber Glass/Epoxy composite plates. Experimental setup and procedure of the modal testing method is described. Fabrication procedure of the plate is described. Geometrical properties are determined. Elastic parameters of the plate are determined experimentally by tensile testing of specimens. A computer program based on FEM has been developed to perform all necessary computations. The program results compared with other existing literature. The natural frequencies of 12-layered and 16-layered woven fiber Glass/Epoxy cantilevered composite plates has been determined experimentally and compared with the present program. The natural frequency and mode shape of the plate has been determined using ANSYS package. The present experimental value and program result compared with ANSYS package. The effects of varying the parameters upon the free vibration frequencies are discussed for 12-layered cantilevered and all edge clamped woven fiber Glass/epoxy composite plates by using the program.