EFFECT OF FIBRE VOLUME FRACTION ON DYNAMIC PROPERTIES OF GLASS FIBRE REINFORCED POLYMER (GFRP) COMPOSITE MATERIAL by Gagandeep Singh
Abstract
To form a composite, two or more different constituent materials which have different physical or chemical properties are used and they do not merge in the finishing structure i.e. the individual constituents retain their properties The present research work is aimed at the development of a Composite of epoxy resin with varying volume fraction of unidirectional continuous glass fibres for calculating their dynamic mechanical properties. Experiments were conducted to calculate storage modulus, loss modulus and loss factor as a function of temp. for different samples by using three point bending mode on Triton Dynamic Mechanical analyzer. Samples were subjected to wide range of stresses at different frequencies i.e. 1Hz, 2Hz and multifrequency (0.316 Hz, 3.16 HZ, 10 Hz , 31.6 Hz) and their modulus values were identified.. FRP sample having VF: 80% has highest storage modulus value of 70.42 GPa at a frequency of 31.6 Hz. With the increase in the VF Ratio, Glass transition temperature also increases from 34.4 (°C) for pure Epoxy hardener composite to 53.2 (°C) for VF: 53%.This is a significant shift in the glass transition temperature.
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