Abstract
Composite material is formed when one or more material is distributed or
reinforced in a continuous second phase called a matrix. Composites have many
superior properties, including low density, high strength-to-weight ratio, and good
durability, which make them attractive in many industries. Composite materials have
been used extensively in various applications. In any application where the strength-t-
-weight ratio plays a vital and important role, Fibre Re-inforced Polymer’s (FRP) is the
best material and offers the most efficient solution. Adhesive bonding is one of the
most powerful joining techniques for FRP’s because of its high mechanical properties.
It has applications in all the fields like aerospace, marine technology, defence systems,
and automotive industries, as well as structural applications and sports. However, the
mechanical performance is biased undesirably by contaminants, like release agents, and
also an excess of matrix in the top layer. In order to generate the most appropriate
surface pre-treatment, their effect on adhesively bonded joints of carbon and glass fibre
re-inforced polymer composite laminates have been investigated. The adhesively
bonded surfaces are treated with grit blasting and silica particle coating and later tested
in order to determine the failure modes. It was found that the mechanical properties of
adhesively bonded joints depend on the surface characteristics of the substrate. The
results indicate that it is possible to increase the bond strength of the joints to maximum
by various surface treatments.