flexure, the surface was cleaned and leveled using sand blast
paper. The specimens were also blown using compressed air
to remove any excess particles. After cleaning, the surface
was applied with an adhesive.
The CFRP sheet to be glued on the surface is 150 mm width
and 0.12 mm thick in size and then was pressed into the
surface with the adhesive. A paint roller was used to press the
CFRP sheet to ensure a uniform thickness of adhesive and
expel any entrapped air. For two (2) sheets of CFRP as shown
in Figure 5, the adhesive was applied for each layer. Finally, a
layer of adhesive was applied on the CFRP sheet for better
adhesion. The thickness of adhesive applied was
approximately 2 mm in thickness.