Introduction
The engineers are searching for structural materials which
have high strength with less weight and least cost. In general
strong materials are relatively dense and light materials will
have less strength. In order to achieve high strength with less
weight it requires to combine two or more different materials
to get composite materials. A large group of engineering
materials have steadily increasing importance in Industrial
application are compose of two or more distinct materials.
The combination results in superior properties not exhibited
by the individual materials. Such materials are called as
composite materials. Many composite materials are
composed of just two phases one is termed as matrix phase,
which is continuous and surrounds the other phase often
called the dispersed phase [1-4]. The matrix phase binds the
fibres together and acts as medium by which an externally
applied stress is transmitted and distributed to the fibres. Only
a very small portion of an applied load is sustained by the
matrix phase and major portion is sustained by the fibers. The
fibres are basically two types. They are Natural and Synthetic
Fibres. Cotton, Jute and Sisal are some examples for Natural
Fibres and Glass, Nylon and Carbon are some examples for
Synthetic Fibres. The Natural fibres are renewable [5] and
cheaper but their mechanical properties are much lower than
the synthetic fibres. The synthetic fibres exhibit good
mechanical properties but they are costlier and non renewable
[6]. In present work to take advantage of both Natural and
Synthetic fibres, they can be combined in the same matrix to
produce hybrid composite and their impact and compressive
properties are studied. [7-13]. The Chalk powder (additive) is