Studi Kekuatan Impact Laminasi Sistem Sisip (Sandwich) Fiberglass dan Polyurethane Foam

Fiberglass boats are one of the options that often used as an alternative to wooden boats. However, leaks on fiberglass very difficult handle at sea, so laminate using a sandwich system material and Polyurethane Foam can be solution deal with where prevent entry water when experiences or cracks in In this study, tests will carried out laminated inserts polyurethane foam variations three types polyol isocyanate mixture compositions form materials, namely 1:1, 1:1.5, 1:2 charpy type impact test method reference ASTM D256 93a determine value, then analysis average value results was compared composites reinforced palm fiber epoxy. From test, 1:1 variance is 0.033j/cm3, 1:1.5 0.038j/cm3, 0.034j/cm3. results, it found able exceed fibers epoxy which had same thickness skin.