?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+KEDALAMAN+ALUR+LAS+LAWAN+(BACK+CHIPPING)+PADA+PENGELASAN+LISTRIK+(SMAW)+BAJA+KARBON+SEDANG+(AISI+1045)+TERHADAP+UJI+KEKUATAN+TARIK&rft.creator=TRISULOHADI+BEN+FIKMAR%2C+0515021075&rft.subject=+&rft.description=abstrak+indonesia%0D%0A%0D%0ABaja+karbon+sedang+dapat+dirangkai+dengan+berbagai+cara%2C+salah+satunya+dengan+pengelasan.+Pada+pelaksanaan+pengelasan+menggunakan+jenis+pengelasan+SMAW+yang+merupakan+salah+satu+metode+pengelasan+yang+digunakan+secara+luas+dalam+penyambungan+konstruksi+teknik.+Pada+saat+pengelasan+sering+terjadi+cacat+akar+seperti+ketidaksempurnaan+penetrasi+akar%2C+pengerasan+dan+retak.+Back+chipping+atau+pengelasan+lawan+perlu+dilakukan+untuk+menghindari+atau+memperbaiki+hal-hal+yang+sering+terjadi+pada+akar+las.+Pengelasan+SMAW+merupakan+salah+satu+metode+pengelasan+yang+digunakan+secara+luas+dalam+penyambungan+konstruksi+teknik.%0D%0APenelitian+ini+bertujuan+untuk+mengetahui+uji+beda+hasil+las+dengan+kedalaman+alur+kampuh+perlakuan+back+chipping+terhadap+uji+kekuatan+tarik+serta+dapat+mengetahui+struktur+mikronya.+Dimana+kedalaman+alur+kampuh+menggunakan+variasi+2+mm%2C+3+mm+dan+4+mm%2C+kemudian+hasil+pengelasan+dari+tiap+perlakuan+jenis+dibagi+menjadi+tiga+spesimen+uji+tarik+dan+satu+spesimen+uji+foto+mikro.+Setelah+spesimen+uji+selesai+kemudian+dilakukan+uji+tarik+dan+foto+mikro+untuk+mengetahui+perubahan+sifat+mekaniknya.%0D%0ADari+pengujian+yang+telah+dilakukan%2C+kekuatan+tarik+yang+dihasilkan+pada+pengelasan+back+chipping+dengan+kedalaman+alur+3+mm+lebih+tinggi+dibandingkan+dengan+pengelasan+perlakuan+las+back+chipping+dengan+kedalaman+2+mm+dan+4+mm.+Kekuatan+tarik+maksimum+yang+terbesar+terdapat+pada+pengelasan+back+chipping+kedalaman+alur+3+mm+yaitu+683.3+MPa%2C+sedangkan+pada+pengelasan+tanpa+perlakuan+las+back+chipping+kekuatan+tarik+maksimum+terbesar+yaitu+591.7+MPa.+Struktur+mikro+akar+las+baja+yang+dilas+tanpa+back+chipping+memiliki+daerah+butir+ferit+dominan.%0D%0AKata+kunci+%3A+Baja+karbon+sedang+AISI+1045%2C+SMAW%2C+back+chipping%2C+kekuatan+tarik%2C+foto+mikro.%0D%0A%0D%0Aabstrak+inggris%0D%0A%0D%0AMedium+carbon+steel+can+be+assembled+in+various+ways%2C+one+of+them+by+welding.+On+the+implementation+of+welding+using+SMAW+welding+type+which+is+one+method+of+welding+is+used+widely+in+construction+grafting+techniques.+In+welding%2C+there%E2%80%99s+common+defects+such+as+imperfections+of+root+penetration%2C+hardened+and+cracked.+Back+chipping+or+welding+opponent+needs+to+be+done+to+avoid+or+fix+things+that+often+occur+in+the+root+weld.+SMAW+welding+is+one+method+which+is+widely+used+in+construction+grafting+techniques.%0D%0AThis+study+aims+to+determine+the+different+test+results+with+the+depth+of+groove+weld+seam+treatment+chipping+back+to+the+tensile+strength+test+also+to+determine+micro+structure.+The+depth+of+groove+seam+using+a+variation+of+2+mm%2C+3+mm+and+4+mm%2C+then+the+welding+results+of+each+treatment+were+divided+into+three+tensile+test+specimens+and+one+photo+micro+specimen.+Upon+completion+of+the+test+specimens+and+then+tensile+test+performed+and+photo+micro+to+acknlowledge+changes+in+mechanical+properties.%0D%0AFrom+the+testing+that+has+been+done%2C+the+result+from+tensile+strength+at+back+chipping+welding+with+3mm+depth+is+higher+than+treated+back+chipping+welding+with+2mm+and+4+mm+depth.+The+largest+maximum+tensile+strength+were+found+in+the+back+chipping+welding+groove+with+3mm+depth+is+683.3+MPa%2C+while+the+untreated+back+chipping+weld+the+largest+maximum+tensile+strength+is+591.7+MPa.+Microstructure+of+root+steel+welding+was+welded+without+back+chipping+has+dominant+ferrite+grain+area.%0D%0AKeywords%3A+Medium+carbon+steel+AISI+1045%2C+SMAW%2C+back+chipping%2C+tensile+strength%2C+photo+micro.&rft.publisher=Fakultas+Teknik&rft.date=2011-02-14&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F2%2Fabstrak%2520inggris.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F4%2FPENGESAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F5%2FPERNYATAAN%2520PENULIS.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F6%2Friwayat%2520hidup.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F7%2FSanwacana.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F8%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F9%2FDAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F10%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F6826%2F11%2FI.%2520PENDAHULUAN.pdf&rft.format=text&rft.identifier=http%3A%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