Abstract :
Joining is a method used to connect two or more materials into one. There
are several joining methods which are often carried out especially in composite
materials, including Mechanical method, adhesive bonding and a combination of
both, of the three methods, the use of media is different. For mechanical methods
using rivets, bolts or pins, while for adhesive bonding, use chemical liquid as the
connecting medium. In the adhesive bonding method, the use of different types of
adhesives and the thickness of different adhesives will result in adhesion strength
to different composite materials. This research was focused on analyzing the
strength of the results of the single lap joint connection with the adhesive bonding
method which varied the type of adhesive and its adhesive thickness.
The connection treatment of the material is adhesive bonding single lap joint.
The process of adhesive bonding is carried out by using variations of adhesive
bonding, namely epoxy, polyester and liycal, then re-testing by varying the
thickness of the adhesive with variations in thickness of 0.5 mm, 0.75 mm and 1
mm. The specimens used in this study were composite materials with a
composition of 3 layer fiber glass woven roving fiber 600 and epoxy resin.
The results of testing the variation of the type of epoxy adhesive have the
highest average value, compared to variations in the types of adhesive polyester
and lycal, with an average value of 38.8 Mpa. As well as adhesive bonding with
variations in adhesive thickness, the highest strength occurred at a thickness of
0.5 mm adhesive with an average stress value of 38.8 Mpa, compared with other
adhesive thicknesses of 0.75 mm with adhesive strength of 29.18 Mpa and 1 mm at
26.65 Mpa. It can be interpreted that adhesive bonding with epoxy variations and
0.5 mm thickness has a stronger adhesive strength compared to other types and
thicknesses of adhesive bonding.