?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Pengaruh+Fraksi+Massa+Pada+Susunan+Serat+Orientasi+0%C2%B0-90%C2%B0+Terhadap+Kekuatan+Bending+Komposit+Berpenguat+Serat+Ijuk+Dengan+Matriks+Epoxy&rft.creator=Samuel+Igor+Reguma++Pardede%2C+0715021080&rft.subject=Teknik+mesin+dan+mesin&rft.description=ABSTRAK%0D%0A%0D%0A%0D%0A%0D%0APerkembangan+industri+komposit+di+Indonesia+dengan+mencari+bahan+komposit+alternatif+yang+lain+harus+ditingkatkan%2C+guna+menunjang+permintaan+komposit+di+Indonesia+yang+semakin+besar.+Selama+ini+perkembangan+komposit+di+Indonesia+masih+menggunakan+sumber+daya+alam+yang+tidak+dapat+diperbaharui+kembali+yang+berasal+dari+galian+bumi.+Untuk+itu+perlu+dikembangkan+bahan+baku+material+penguat+komposit+yang+ramah+lingkungan%2C+seperti+serat+alam.%0D%0A%0D%0ASaat+ini+banyak+penelitian+tentang+komposit+yang+menggunakan+serat+alam+sebagai+bahan+pengisinya%2C+salah+satunya+adalah+komposit+berpenguat+serat+ijuk+karena+harganya+relatif+lebih+murah+dibandingkan+serat+sintetis.+Serat+ijuk+diberikan+perlakuan+NaOH+5%25+selama+2+jam.+Kemudian+dipotong+menjadi+dua+variasi%2C+yaitu+130+mm%2C+dan+100+mm.+Selanjutnya+kedua+variasi+disusun+secara+rapih+dengan+susunan+0%C2%B0-90%C2%B0+fraksi+10%25+dan+fraksi+15%25+pada+cetakan+dan+dicampur+dengan+resin+epoxy+menggunakan+mesin+vacuum+hingga+cetakkan+penuh.+Spesimen+yang+telah+mengeras%2C+dibentuk+sesuai+dengan+ASTM+D790-03+kemudian+spesimen+siap+untuk+diuji+bending.%0D%0A%0D%0ADari+hasil+pengujian+dan+analisa%2C+didapatkan+bahwa+nilai+kekuatan+bending+pada+serat+fraksi+15%25+sebesar+46%2C955+MPa++lebih+tinggi+dibandingkan+dengan+serat+fraksi+10%25+sebesar+33%2C745+MPa+dan+matrik+epoxy+murni+sebesar+8%2C741+MPa.+Sehingga+diketahui+bahwa+semakin+banyak+serat+maka+semakin+tinggi+kekuatan+bendingnya+hal+ini+dikarenakan+serat+ijuk+mampu+menahan+beban+penekanan+yang+diberikan+secara+konstan.+Selanjutnya+dilakukan+asil+pengamatan+perpatahan+menggunakan+SEM+untuk+melihat+ikatan+antar+serat+dan+matrik%2C+Hasil+kekuatan+bending+yang+didapat+belum+optimum+dikarenakan+masih+adanya+void+yang+terdapat+pada+spesimen.%0D%0A%0D%0AKata+kunci+%3A+komposit%2C+resin+epoxy%2C+serat+ijuk%2C+NaOH+5%25%2C+kekuatan+bending%2C+SEM%2C+void.%0D%0A%0D%0A%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0A%0D%0AComposite+industrial+devolepment+in+Indonesia+must+be+enhanced%2C+to+supportgrowing+demand+for+composite+in+Indonesia.+All+this+time+composite+development+in+Indonesia+still+using+not+renewable+natural+resource.+For+that+it+need+to+developed+raw+material+environtment+friendly+composite+reinforcement%2C+such+as+natural+fiber.%0D%0A%0D%0ACurrently+has+a+lot+of+composites+research+using+natural+fiber+as+a+filler%2C+which+of+one+is+sugar+palm+fiber+composite+because+relatively+cheap+price+more+than+synthetic+fiber.+Sugar+palm+fiber+given+by+NaOH+5%25+treatment+during+two+hours.+And+than+cutting+to+three+variation%2C+spesitically+10+mm%2C+20+mm%2C+30+mm+and+than+three+variation+prepared+random+orientation+in+the+mold+and+the+mixed+epoxy+resin+using+vacuum+machine+to+full+on+mold.+The+specimens+which+have+been+hardened%2C+estabilished+in+accordance+with+ASTM+D790-03+then+its+ready+to+be+bending+test.+%0D%0A%0D%0AThe+result+of+the+test+and+analysis%2C+avalaible+value+of+bending+strength+ofcompositefiber+fraction+15%25+is+64.11MPa+is+higher+than+fiber+10%25+is35%2C33MPa.+So+that+if+the+to+many+fiber+getting+strongthan+bending+strength+is+higher+this+is+because+the+critical+length+of+fiber+that+is+capable+of+holding+the+fracture.+Observation+of+the+fracture+on+SEM+was+found+that+the+length+of+the+fiber+fracture+surface+the+less+experienced+fiber+pull-out.+Bending+strength+results+obtained+not+optimum+due+to+the+persistence+of+the+voids+contained+in+the+specimen.%0D%0A%0D%0A%0D%0AKeywords+%3A+composite%2C+epoxy+resin%2C+sugar+palm+fiber%2C+NaOH+5%25%2C+random%2C+bending+strength%2C+SEM%2C+void.%0D%0A&rft.publisher=Fakultas+Teknik&rft.date=2015-03-04&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F1%2FABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F2%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F8%2FMENYETUJUI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F9%2FMENGESAHKAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F10%2FSURAT%2520PERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F11%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F12%2FPERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F13%2FMOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7721%2F14%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.a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