435-442Elastic properties are the basic quantities that are required
during design and optimization of a laminated structure. Though the literature
on elastic properties of conventional single fibre composite is well published,
the same is scanty in the case of natural and hybrid composites. This work is
focused on evaluation of in-plane elastic properties of untreated woven jute
and jute-glass fabric hybrid polyester composites, under tension. The specimens
have been fabricated by hand-lay-up technique with different relative weight
fraction of jute and glass fibre. Theoretically, the laminate elastic
properties are predicted by using the classical lamination theory (CLT) and
rule of hybrid mixture model, using the resin and fibre properties together
with the volume fraction (micromechanics). Experimentally, the elastic
properties have been evaluated by tension test in warp and weft direction and
in-plane shear test as per ASTM standards. The results indicated that the
Young’s modulus in both warp and weft direction improve by the inclusion of
glass fibre, where as Poisson’s ratio is decreased. Prediction by CLT and model
showed close agreement with experimental values with a maximum deviation of
about 20%. The possible causes for this deviation are discussed