Dynamic analysis of the natural fiber (Coir) reinforce polyester composite material with mechanical properties

The primary goal of the research determines the mechanical and damping property of the composite material made of
polyester, short coir fibres under dynamic analysis at various temperatures and frequencies. It has been discovered
how temperature affects storage modulus (E′), factor defeat or damping efficiency and loss modulus (E″). The specimen of the composites is constructed using a hand-layup process with random fibre orientation, with eight
percentages of 5, 10, 15, and 20%. The research tests showed that adding more fibre raise the mechanical roperties
and storage modulus, with highest value being provided by composites with fibre loads of 5, 10, 15 and 20 wt%
respectively in different temperature. The fibre content decreases the maximum height of the loss modulus and
damping curve (tan). The attribute is likened to clean polyester. The study finds the increased fibre contents increase along with composite's natural frequency and storage modulus