ANALISIS SIFAT PENYERAPAN AIR KOMPOSIT SANDWICH POLYESTER DENGAN CORE BONGGO…

Water absorption is done with ASTM C - 272. With the variation of fiber volume fraction of 0 %, 5 %, 10 %, 15 %, 20 % and 30 %, and also variations of the direction of unidirectional fibers, woven and random. Where the test specimens were weighed with a digital scale with a precision of 0.01 grams and then the specimens were kept for 7 x 24 hours, after which the composite is weighed again to d…