?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=APLIKASI+CENTRAL+COMPOSITE+DESIGN+DALAM+OPTIMASI%0D%0APERMESINAN+MAGNESIUM+AZ31&rft.creator=RABIAH+SURRIANINGSIH%2C+1015021009&rft.subject=Mesin+(General).+Mesin+Sipil+(General)&rft.description=ABSTRAK%0D%0A%0D%0AMagnesium+AZ31+telah+banyak+dimanfaatkan+untuk+industri+permesinan+manufaktur+seperti+pembuatan+komponen+pesawat+terbang+dan+mobil.+Kualitas+produk+dari+magnesium+AZ31+yang+diinginkan+adalah+berupa+produk+yang+memiliki+tingkat+kepresisian+bentuk+yang+akurat+dan+keadaan+permukaannya+yang+halus.+Tujuan+dari+penelitian+ini+adalah+untuk+menemukan+permodelan+matematika+agar+mencapai+kondisi+optimum+pada+permesinan+frais+magnesium+AZ31.+Masing+%E2%80%93+masing+nilai+variabel+permesinan+kecepatan+potong+(vc)++yang+digunakan+adalah+vc+%3D+22+mm%2Fmin%2C+32+mm%2Fmin%2C+dan+42+mm%2Fmin%2C+kedalaman+potong+(d)+1+mm%2C+2+mm%2C+3+mm+dan+gerak+makan+(f)+%3D+0.15+mm%2Frev%2C+0.20+mm%2Frev%2C+0.25+mm%2Frev.+Nilai+variabel+tersebut+dikombinasikan+menggunakan+metode+permukaan+respon+central+composite+design+20+sampel+memakai+bantuan+software+minitab+17+menghasilkan+umur+pahat+aktual+selama+96.7+menit+atau+lebih+lama+9.36+%25+dari+umur+pahat+prediksi++Central+Composite+Design+yaitu+selama+85.78+menit.+Permodelan+matematika+untuk+permesinan+frais+magnesium+yang+dihasilkan+adalah+Y+%3D+34.7+%2B+7.69+v+-+0.426+f+-+61.5+d+-+0.0688+v*v+%2B+0.000539+f*f+%2B+19.77+d*d+-+0.00352+v*f+-+1.074+v*d+%2B+0.0363+f*d.+Nilai+optimal+yang+dihasilkan+untuk+variabel+permesinan+frais+magnesium+AZ31+menggunakan+kecepatan+potong+(vc)+42+mm%2Fmin%2C+kedalaman+potong+(d)+1+mm%2C+dan+gerak+makan+(f)+0.15+mm%2Frev.%0D%0A%09%0D%0AKata+kunci%3A+Central+composite+design%2C+permesinan+frais%2C+magnesium+AZ31%2C+umur+pahat%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0AMagnesium+AZ31+has+been+widely+used+for+manufacturing+machinery+industries+such+as+manufacturing+aircraft+components+and+automotive.+The+product+quality+of+magnesium+AZ31+desired+to+product+that+has+an+accurate+form+of+precision+and+decreased+value+of+surface+roughness.+The+purpose+of+the+research+was+to+find+mathematical+modeling+to+achieve+optimum+conditions+on+AZ31+magnesium+milling+machining.+The+parameters+used+for+this+researchis+the+velocity+cutting+machine+variable+(vc)+used+vc+%3D+22+mm+%2F+min%2C+32+mm+%2F+min%2C+and+42+mm+%2F+min%2C+cutting+depth+(d)+1+mm%2C+2+mm%2C+3+mm+and+feeding+(f+)+%3D+0.15+mm+%2F+rev%2C+0.20+mm+%2F+rev%2C+0.25+mm+%2F+rev.+The+variable+values+combined+using+the+central+composite+design+method+of+20+samples+using+minitab+17+software.+A+maximum+actual+tool+life+for+96.7+minutes+or+longer+than+9.36%25+of+the+Central+Composite+Design+prediction+for+85.78+minutes.+The+mathematical+modeling+for+the+magnesium+AZ31+milling+process+is+Y+%3D+34.7+%2B+7.69+v+-+0.426+f+-+61.5+d+-+0.0688+v+*+v+%2B+0.000539+f+*+f+%2B+1.06+v+*+d+%2B+0.0363+f+*+.The+optimum+value+for+AZ31+magnesium+milling+machining+variable+using+cutting+speed+(vc)+42+mm+%2F+min%2C+cutting+depth+(d)+1+mm%2C+and+feeding+(f)+0.15+mm+%2F+rev.%0D%0A%0D%0AKeywords%3A+Central+composite+design%2C+milling+machinery%2C+magnesium+AZ31%2C+tool+life%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2017-04-13&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27035%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27035%2F3%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27035%2F4%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++RABIAH+SURRIANINGSIH%2C+1015021009++(2017)+APLIKASI+CENTRAL+COMPOSITE+DESIGN+DALAM+OPTIMASI+PERMESINAN+MAGNESIUM+AZ31.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F27035%2F