Karakterisasi Kekuatan Tarik, Impak, Dan Densitas Pada Komposit Hibrid Berpen…

ABSTRACT The use of SNI helmets is a mandatory requirement for using motor vehicle equipment. SNI helmets are generally made of polypropelene polymer. Composites reinforced with synthetic fibers cause biocomposites reinforced with natural fibers to become a major concern as a new environmentally friendly material. The purpose of this research is to determine the feasibility of sisal/carbon fib…