Abstracts Engineering

Dynamic characteristics of fiber reinforced polymercomposite with and without interleaving of polypropylene honeycombstructure;

by P Nagasankar

In this research work the dynamic characteristics of fiber reinforced polymer FRP composites under the influence of various factors have been investigated from the theoretical and experimental predictions Those influential factors include the different fiber orientations and layups fiber diameter and chopped fibers interleaving of Polypropylene PP honeycomb core with the combined effect of different fiber orientations and thickness and different temperature of FRP composite and honeycomb sandwich specimens The dynamic characteristics of FRP composites have been studied newlinefor a large number 21 nos of different lay ups of fiber intending to get a better damping without compromising much on the stiffness frequency values The better layup has been selected based on the considerable damping and frequency values in mode shapes 1 2 and 3 These layups have also been categorized into three groups A B and C and the best layup was selected from each group The experimental test was carried out to calculate the natural frequencies and damping loss factors using Impulse technique with half power bandwidth method The modal analysis was also performed in FEM software ANSYS newline Advisors/Committee Members: Balasivanandha prabu S.