?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=KAJI+EKSPERIMENTAL+KUALITAS+HASIL+PENGELASAN+DENGAN+KUAT+ARUS+120+AMPERE+PADA+BAJA+KARBON+SEDANG+AISI+1045+TERHADAP+UJI+KETAHANAN+LELAH+BAJA+TIPE+ROTARY+BENDING&rft.creator=AMAR+MAKRUF%2C+0815021022&rft.subject=Mesin+(General).+Mesin+Sipil+(General)&rft.subject=Teknik+mesin+dan+mesin&rft.description=Dalam+dunia+industri+baja+merupakan+material+yang+banyak+digunakan.+Salah+satu+jenis+baja+yang+banyak+digunakan+yaitu+baja+AISI+1045+sebagai+bahan+pembuat+poros+untuk+komponen+mesin.+Pada+penggunaannya%2C+poros+beroperasi+menerima+beban+dinamik+serta+berfluktuasi+dalam+waktu+yang+lama%2C+sehingga+rentan+mengalami+kegagalan+saat+digunakan+akibat+mengalami+kegagalan+lelah.+Mekanisme+terjadinya+kegagalan+fatik+dapat+dibagi+menjadi+tiga+fase+yaitu+%3A+awal+retak+(initiation+crack)%2C+perambatan+retak+(crack+propagation)%2C+dan+perpatahan+akhir+(fracture+failure).+Solusi+pada+patahan+poros+yaitu+dengan+pengelasan+pada+material+patah+poros%2C+cara+pengelasan+yang+paling+banyak+digunakan+adalah+pengelasan+cair+dengan+busur+(las+busur+listrik).+%0D%0AUntuk+mengetahui+nilai+ketahanan+lelah+baja+AISI+1045+yang+dipengaruhi+kekasaran+permukaannya+maka+dapat+dilakukan+dengan+melakukan+pengujian+ketahanan+lelah+menggunakan+alat+rotary+bending.+Ada+pun+metode+pengujian+yang+dilakukan+adalah+dengan+memberikan+variasi+pembebanan+sebesar+20%25%2C+30%25%2C+40%25%2C+50%25%2C+60%25+dan+70%25+dari+nilai+tegangan+tarik+maksimum+baja+tersebut%2C+serta+melakukan+pengamatan+makroskopik+tehadap+pola+perpatahan+yang+terjadi+pada+spesimen+pengujian.+Hasil+pengujian+menunjukkan+bahwa+nilai+ketahanan+lelah+maksimum+yang+mampu+dicapai+adalah+180.405+siklus+pada+pembebanan+20%25+(90%2C94+Mpa).%0D%0AKata+Kunci+%3AUji+Fatik%2C+Rotary+Bending%2C+Baja+Karbon+Sedang+AISI+1045%0D%0A%0D%0A%0D%0AAbstract%0D%0A%0D%0AIn+the+industrial+world+steel+is+a+material+that+is+widely+used.+One+of+the+widely+used+type+of+steel+is+AISI+1045+as+the+material+of+the+shaft+for+the+engine+components+maker.+On+its+use%2C+the+axis+of+operation+receive+dynamic+load+and+fluctuating+in+a+long+time.+So+that+the+winerable+experienced+a+failure+when+used+due+to+experiencing+fatigue+failure.+The+mechanism+of+fatigue+failure++have+3+phases%2C+there+are+initial+crack%2C+crack+propagation+and+fracture+failure.+The+solution+of+shaft+fracture+is+welding+the+broken+shaft+material+the+widely+used+type+of+method+is+shield+metal+arc+welding.%0D%0ATo+find+out+the+fatigue+strength+value+of+AISI+1045+steel+that+affected+the+surface+of+roughness+so+can+be+done+by+performing+testing+using+the+rotary+bending+testing+machine.+As+for+the+testing+method+is+done+by+giving+the+variation+of+load+by+20%25%2C+30%25%2C+40%25%2C+50%25%2C+60%25+and+70%25+of+the+ultimate+tensile+strengh+value%2C+as+well+as+do+macroscopic+observation+by+taking+action+against+the+pattern+of+the+fracture+that+occurs+in+the+test+specimens+the+test+result+shot+that+the+value+of+the+maximum+fatigue+strengh+is+able+to+accomplish+is+180.405+cycle+on+the+20%25+loading+(90%2C94+Mpa).%0D%0AKeywords%3A+Fatigue+Test%2C+Rotary+Bending%2C+Medium+Carbon+Steel+AISI+1045.%0D%0A&rft.publisher=Fakultas+Teknik&rft.date=2015-09-25&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F1%2FABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F2%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F4%2FCOVER%2520DEPAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F5%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F6%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F7%2FDAFTAR%2520LAMPIRAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F8%2FDAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F10%2FMENYETUJUI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F9%2FMENGESAHKAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F11%2FMOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F12%2FPERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F13%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F14%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F15%2FSURAT%2520PERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F16%2FBAB%2520I.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F17%2FBAB%2520II.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14124%2F18%2FBAB%2520III.pdf&rft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