Abstract :
This research aims to determine the effect of the amount of fiberglass
woven variation on tensile strength and impact strength of composite hybrid
matrix polyester and rice husk particles. The matrix used in composite
manufacture is unsaturated polyester Yukalac 157 BQTN and catalyst 1 %. The
particles used in composite manufacture are carbon produced from
carbonization. The reinforcing material uses fiberglass woven. The composite
creation method is a hand lay-up method. Variations of test are using different
variations in the layers number of fiberglass woven : 2 layers, 3 layers, and 4
layers, with using stirring round of 885 Rpm for 15 minutes and the curing
temperature of 100oC for 60 minutes. Furthermore, the tensile strength, impact
strength, and SEM test were conducted.
The research shows the results of the tensile tensting and impact testing.
The highest tensile strength was obtained from a composite hybrid with 4 layers
of fiberglass woven at 170,03 Mpa. Besides, the lowest tensile strength was
obtained from a composite hybrid with 2 layers of fiberglass woven at 86,16 MPa.
The impact test was obtained on the highest impact strength and impact energy on
a composite hybrid with 3 layers of fiberglass woven at 0,06 J/mm2
and 2,40
Joule, while the lowest impact strength and impact energy on a composite hybrid
with 2 layers of fiberglass woven at 0,03 J/mm2
and 1,13 Joule. The SEM test was
coducted on fracture of tensile test speciment on a composite hybrid with 4 layers
of fiberglass woven. According to the results, matrix crack, debonding, and fiber
pull out at fiberglass woven was identified.