?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISIS+KEKUATAN+FATIK+ALUMINIUM+7075+T7351+DENGAN+VARIASI+PUTARAN+POROS+PADA+ALAT+UJI+ROTARY+BENDING&rft.creator=Lucky+Cahyadi%2C+0615021089&rft.subject=+&rft.subject=Karya+Karya+Umum+%3D+000&rft.description=abstrak+indonesia%0D%0A%0D%0A%0D%0ABeban+lelah+(fatique)+merupakan+salah+satu+penyebab+utama+kegagalan+material.+Fatik+menduduki+90%25+penyebab+utama+kegagalan+pemakaian.+Kelelahan+material+adalah+proses+perubahan+struktur+yang+diakibatkan+beban+yang+berulang-ulang+(tegangan+atau+regangan)+dalam+jangka+waktu+yang+lama+sehingga+terjadi+retak+(crack)+ataupun+patah.+Tujuan+dari+penelitian+ini+adalah+menganalisis+kekuatan+lelah+aluminium+tipe+7075+T7351+dengan+variasi+putaran+poros+alat+uji+Rotary+Bending.%0D%0AUji+lelah+dilakukan+terhadap+Aluminium+7075+T7351+tanpa+mendapatkan+perlakuan+panas.+Pengujian+dilakukan+dengan+variasi+putaran+poros+2880+Rpm+dan+1990+Rpm+yang+kemudian+dilanjutkan+pengujian+variasi+pembebanan+30%25%2C+40%25+%2C+50%25+%2C+60%25++dan+70%25++dari+UTS+material.+Spesimen+yang+digunakan+adalah+berdasarkan+standar+ASTM+E466.+Pembuatan+spesimen+dilakukan+dengan+menggunakan+mesin+bubut.+Uji+lelah+digunakan+dengan+menggunakan+mesin+uji+fatik+tipe+rotary+bending.%0D%0ADari+pengujian+yang+dilakukan+diperoleh+siklus+patah+pada+masing-masing+variasi+putaran+poros+dan+pembebanan.+Pada+putaran+poros+2880+Rpm+dengan+pembebanan+30%25++dari+UTS+diperoleh+634920+siklus+sedangkan+pada+pengujian+70%25+dari+UTS+diperoleh+86580.+Berbeda+dengan+pengujian+pertama%2C+pada+putaran+1990+Rpm+dengan+pembebanan+30%25+dari+UTS+diperoleh+723638+siklus+sedangkan+pada+pengujian+70%25+dari+UTS+diperoleh+29950+siklus.+Siklus+patah+disajikan+dalam+bentuk+kurva+S-N+yang+kemudian+dapat+digunakan+untuk+memprediksi+ketahanan+lelah+Aluminium+7075+T7351+pada+masing-masing+variasi+putaran.+Hasil+penelitian+ini+menunjukan+putaran+1990+Rpm+memiliki+ketahanan+lelah+yang+lebih+baik+dibandingkan+putaran+2880+Rpm.%0D%0A%0D%0AKata+kunci%3A+Uji+Fatik+(fatigue)%2C+Rotary+Bending%2C+Aluminium+7075+T7351%0D%0A%0D%0Aabstrak+inggris%0D%0A%0D%0AFatigue+is+the+one+of+the+main+cause+from+of+the+material+failure.+The+main+of+cause+failure+90+%25+caused+fatigue.+++Fatigue+is+material+sructure+process+changes+that+is+caused+by+repeatly+load+(stress+or+shear)+in+a+long+period+of+time+so+it+occured+crack+or+break.+The+reason+of+this+research+is+to+analyze+of+the+fatigue+strength+aluminium+type+7075+T7351+with+variaton+of+shaft+rotation+on+rotary+bending+machine%0D%0A%0D%0AFatigue+test+applied+on+aluminium++type+7075+T7351+without+heat+treatment.+This+research+was+conducted+with+variation+of+shaft+rotation+2880+rpm+and+1990+rpm+and+continued+with+load+variation+30%25%2C+40%25%2C+50%25%2C+60%25+and+70+%25+from+material+UTS.+Specimen+that+used+according+ASTM+E466+spesimen+made+by+lathe+machine.+Fatigue+test+is+using+by+rotary+bending+machine+type+fatigue+test+machine.%0D%0AFrom+the+test+that+done%2C+we+collected+value+for+fatigue+cycle+for+each+load+variation+and+shaft+rotation.+On+shaft+rotation+2880+rpm+at+30%25+load+from+UTS+we+get+634920+cycle.+While+for+70%25++from+UTS+we+get+86580+cycle.+Different+with+first+test%2C+on+shaft+rotation+1990+rpm+at+30+%25+load+from+UTS+we+get+723638+cycle%2C+while+for+70+%25+from+UTS+we+get+29950+cycle.+Fatigue+cycle+presented+in+form+of+S-N+curve+than+using+to+predict+fatigue+endurance+of+aluminium+7075+T7351+every+each+shaft+rotation.+That+result+showed+shaft+rotation+1990+rpm++have+a+good+fatigue+endurance+than+shaft+rotation+2880+rpm.%0D%0A%0D%0AKeyword%3A+Fatigue+test%2C+rotary+bending%2C+aluminium+7075+T7351%0D%0A&rft.publisher=Fakultas+Teknik&rft.date=2013-01-03&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F1%2FABSTRAKind.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F2%2FAbstract.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F3%2F9.%2520DAFTAR%2520ISI.doc&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F4%2F10.%2520DAFTAR%2520TABEL.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F5%2Fgambar%2520spesimen.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F6%2Fcover.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F7%2Flmp.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F13%2F9.%2520DAFTAR%2520ISI.doc&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F14%2F10.%2520DAFTAR%2520TABEL.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F8%2Fbab%2520I.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F9%2Fbab%2520II.docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F10%2FBAB%2520III..docx&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6803%2F11%2Fbab%2520I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