?url_ver=Z39.88-2004&rft_id=1315021008&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+PENAMBAHAN+SERAT+LENGKUAS+TERHADAP+%0D%0AKEKUATAN+TARIK+KOMPOSIT+SERAT+LENGKUAS%2FEPOKSI&rft.creator=ANGGI+ANTONIUS%2C+1315021008&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Serat+lengkuas+(alpinia+galangal)+dapat+dimanfaatkan+menjadi+penguat+komposit+%0D%0Aserat+alami+karena+memiliki+kekuatan+tarik+yang+tinggi.+Penelitian+ini+bertujuan+%0D%0Auntuk+mengetahui+pengaruh+serat+lengkuas+terhadap+kekuatan+tarik+komposit+serat+%0D%0Alengkuas.+Komposit+ini+dapat+diaplikasikan+di+berbagai+bidang+seperti+otomotif%2C+%0D%0Aalat+rumah+tangga+dan+lain+sebagainya.%0D%0AKomposit+dibuat+dari+pencampuran+serat+lengkuas+dengan+matrik+polimer+epoksi.+%0D%0ASerat+lengkuas+diberikan+perlakuan+alkali+5%25+NaOH+selama+dua+jam+dan+%0D%0Adibersihkan+dengan+aquades+lalu+dikeringkan.+Serat+disusun+secara+acak+(random)+%0D%0Adengan+fraksi+massa+serat+2%25%2C+3%25%2C+dan+4%25%2C+dengan+panjang+serat+yaitu+30+mm.+%0D%0APencetakan+spesimen+dengan+metode+vacuum+resin+infusion.+Untuk+mengetahui+%0D%0Asifat+mekanik+dari+komposit+serat+lengkuas+dilakukan+pengujian+kekuatan+tarik%0D%0Asesuai+standar+pengujian+ASTM+D+638-03+dan+untuk+mengetahui+morfologi+%0D%0Apatahan+komposit+dilakukan+dengan+pengamatan+mikroskop+dan+scanning+%0D%0Aelectron+microscope.+Dari+hasil+pengujian+material+komposit+serat+lengkuas%2C+didapat+kekuatan+tarik+%0D%0Atertinggi+pada+sampel+fraksi+massa+4%25+dengan+nilai+26%2C89+MPa%2C+nilai+regangan+%0D%0Asebesar+5%2C03%25+dan+modulus+elastisitas+sebesar+0%2C68+GPa.+Pada+hasil+pengamatan+%0D%0Amikroskop+dan+scanning+electron+microscope%2C+terdapat+fiber+breaking%0D%0Adipermukaan+patahan+dimana+polimer+dan+serat+putus+secara+bersamaan+yang+%0D%0Aartinya+bounding+serat+dengan+polimernya+baik.+Beberapa+spesimen+terdapat+pull+%0D%0Aout+dan+void+yang+terjebak+di+beberapa+spesimen%2C+hal+inilah+yang+menyebabkan+%0D%0Akekuatan+tarik+komposit+tidak+lebih+kuat+dari+spesimen+epoksi+murni%2C+Namun+%0D%0APenggunaan+serat+lengkuas+dapat+mempengaruhi+kekuatan+tarik+komposit+dimana+%0D%0Aterjadi+peningkatan+di+setiap+penambahan+massa+serat.%0D%0AKata+Kunci+%3A+alpinia+galangal%2C+komposit%2C+polimer%2C+kekuatan+tarik%2C+regangan%2C+%0D%0Amodulus+elastisitas.%0D%0A%0D%0A%0D%0AAlpinia+Galangal+fiber+can+be+used+as+an+reinforcement+for+natural+fiber+composite%0D%0Abecause+it+has+high+tensile+strength.+This+research+aim+to+know+the+effect+of+%0D%0AAlpinia+Galangal+fiber+on+the+tensile+strength+of+the+Alpinia+Galangal+Fiber+%0D%0Acomposite.+This+composite+can+be+applied+in+multiple+field+as+automotive%2C+%0D%0Ahousehold%2C+and+etc.%0D%0AComposite+are+made+by+mixing+Alpinia+Galangal+fiber+with+epoxy+polimer+matrix.+%0D%0AAlpinia+Galangal+fiber+was+given+an+alkali+treatment+for+two+hours+and+cleaned+%0D%0Ausing+distilled+water+and+then+was+dried.+The+fibers+were+arranged+randomly+%0D%0Aaccording+to+2%25%2C+3%25%2C+and+4%25+fiber+mass+fraction.+The+length+of+fibers+is+30+mm.+%0D%0AThe+specimen+printing+method+was+vacuum+resin+infusion.+Mechanical+properties+%0D%0AAlpinia+Galangal+fiber+composites%2C+tensile+strength+was+tested+according+to+ASTM+%0D%0AD+638-03+standard+test+method.+The+composite+morphology+of+the+breaking+%0D%0Acomposite+was+observed+using+optical+microscope+Scanning+Electron+Microscope.%0D%0ATensile+strength+of+Alpinia+Galangal+fiber+composite%2CShows+the+highest+tensile+%0D%0Astrength+at+mass+fraction+of+4%25%2C+it+was+26%2C89+MPa%2C+the+strain+was+5%2C03%25+and+%0D%0Aelastic+modulus+was+0%2C68+GPa.+The+observation+with+optical+microscope+and+%0D%0Ascanning+electron+microscope+found+the+fiber+breaking+on+the+fracture+surface.+At+%0D%0Afiber+breaking%2C+fiber+and+polymer+broke+at+the+same+time.+Many+specimen+were+%0D%0Afound+pull+out+and+the+present+of+void.+It+causes+tensile+strength+of+fiber+composite%0D%0Awas+less+than+pure+epoxy.+The+use+of+Alpinia+Galangal+fiber+can+affect+composite+%0D%0Atensile+strength.%0D%0AKeywords%3A+Alpinia+Galangal%2C+composite%2C+polymer%2C+ASTM+D+638-03%2C+tensile+%0D%0Astrength%2C+young+modulus.%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2019-06-27&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57110%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57110%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57110%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++ANGGI+ANTONIUS%2C+1315021008++(2019)+PENGARUH+PENAMBAHAN+SERAT+LENGKUAS+TERHADAP+KEKUATAN+TARIK+KOMPOSIT+SERAT+LENGKUAS%2FEPOKSI.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57110%2F