Abstract
The fundamental investigation on the dynamic characterization of Flax/E-glass hybrid composite plates was done and the mathematical model was developed for Flax/E-glass hybrid composite using Finite element method. In this experimental set up vaccum bagging process was implemented in order to fabricate prototypes of Flax/Epoxy, E-glass/Epoxy, Flax/E-glass epoxy hybrid composites and to conduct experimental investigation on dynamic properties. The first order shear deformation plate theory was used in this study for developing the mathematical model. Modal analysis was done on each composite plate for three times and average was taken between the values obtained to minimize the error. By this natural frequency of Flax/Epoxy, E-glass/Epoxy and Flax/E-glass epoxy hybrid composite and natural frequencies were found out experimentally by modal testing. The effect of natural frequencies on composite material, with respect to boundary condition, ply angle and aspect ratio were studied and the experimental results were validated with respect to mathematical modeling Mode Shapes with effect of natural frequencies on composite material, ply angle, aspect ratio, boundary conditions were studied, for all laminates and it was found that for all laminates CCCC boundary condition has high natural frequencies compared to other models. Hence it was observed that experimental results obtained through modal testing were very close to the Matlab results.
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