Abstract :
Vacuum resin infusion is a method of making composites by utilizing
vacuum pressure where the spread of the resin will be regulated by pressure so that
the resin is spread evenly on the specimens that are made. The purpose of this study
was to determine the design of the vacuum resin infusion device where the process
of making composites using the vacuum resin infusion method has advantages over
the hand lay up method, as seen in the specimens produced where the rate of bubble
formation is lower, and the standard deviation value is 10.983% smaller compared
to the standard deviation value of the hand lay up method, which is 20.927%
Then in the manufacture of composites using chooped carbon fiber with a
comparison between the hand lay up method and the vacuum resin infusion method
and knowing the level of bending strength in chopped carbon fiber composites.
The results of bending tests on chopped carbon fiber composites using the
hand lay up method are known to have the highest average stress value of 84.333
Mpa, then bending tests on chopped carbon fiber composites using the vacuum
resin infusion method are known to have the highest average stress values of
100.497 MPa. This possibility occurs because during the process of making
composites using the hand lay up method, in the process there is direct contact with
hands and air so that the level of voids is quite high.