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All Journal Infotekmesin Perwira Journal of Science and Engineering (PJSE) Journal of Applied Mechanical Technology (JAMET)
Nota, Nota Ali Sukarno
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Aerospace Engineering Automotive Engineering Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh proses quenching dengan variasi media pendingin terhadap sifat mekanik dan struktur mikro baja AISI 1045 Nota, Nota Ali Sukarno; Azis, Abdul; Budianti, Siska Irma; Sampurno, Carolus Borromeus Krishna
Perwira Journal of Science & Engineering Vol 5 No 1 (2025)
Publisher : Universitas Perwira Purbalingga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54199/pjse.v5i1.493

Abstract

Baja sangat memiliki peranan yang penting dalam dunia industri, sifat mekanik yang dimiliki material ini cukup mampu untuk berbagai penggunaan lapangan dalam berbagai aplikasi. Baja AISI 1045 dilakukan perlakuan panas dengan variasi media pendingin air mineral dan oli SAE 20W-50, waktu penahanan 45 menit. Bagaimana pengaruh perlakuan panas terhadap sifat mekanik dan struktur mikro pada baja AISI 1045 yang di quenching pada media air dan oli. Hasil dari nilai kekerasan rata-rata pada media air adalah 89,35 HRC dan 49,90 HRC pada media oli, dari sebelum perlakuan panas yaitu 12,32 HRC. Struktur mikro didapatkan fasa martensit lebih mendominasi dari pada fasa perlit dan ferit. Hal ini dikarenakan perlakuan panas yang merubah fasa ferit dan perlit menjadi martensit. Pada pendingin air kekerasannya lebih keras dibandingkan pendingin oli, dikarenakan nilai densitas yang semakin tinggi akan mempengaruhi laju pendinginan yang cepat dan berpengaruh pada nilai kekerasan yang baik, sedangkan nilai dari viskositas yang tinggi menjadikan laju pendinginan menjadi lambat sehingga berpengaruh juga pada nilai kekerasan dari baja AISI 1045 tersebut.
Perancangan dan Analisis Mesin Pencacah Rumput Untuk Peningkatan Efisiensi Pakan Ternak di Desa Cipicung Nota, Nota Ali Sukarno; Aziz, Abdul; Gunawan, Leo Van; Nabilah, Prita Retno; Riandi, Maxc Reno Rona
Journal of Applied Mechanical Technology Vol 4 No 1 (2025): JOURNAL OF APPLIED MECHANICAL TECHNOLOGY (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/journalofappliedmechanicaltechnology.v4i1.305

Abstract

The process of chopping grass for animal feed in Cipicung Village, Sumedang Regency, West Java Province still uses manual methods using simple tools such as machetes and sickles. The use of this tool takes a long time, slowing down the feeding process and requiring human labor. Therefore, the manufacture of a grass chopping machine is needed to simplify the chopping process, make time more efficient and to minimize accidents during the chopping process. The design methods used to obtain data include; field surveys, drawing planning, calculations to determine the components to be used. Based on the calculation results, the machine can chop grass as much as 900 kg/hour or 15 kg/minute. For the rotation of the grass chopper blade needed to chop in 1 minute is 937.5 rpm. While the calculation results of the maximum rotation on the axle pulley are 1800 rpm, then the design can be said to be successful because the rotation of the axle pulley has exceeded the rotation of the chopper blade, which is 937.5 rpm. The simulation results obtained a von misses value of 29.664 N/mm² and a maximum displacement of 0.084 mm and a factor of safety on the frame with a maximum value of 1.5.
Optimasi Friction Stir Spot Welding Dengan Stabilizer Interlayer Pasta Zink Pada Material Dissimilar Aa5052-Ss400 Nota, Nota Ali Sukarno; Lingga Arti Saputra; Abdul Aziz
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.2943

Abstract

Joining aluminum and steel materials using Friction Stir Spot Welding (FSSW) still faces challenges, particularly regarding interlayer stability and the limitations of joint mechanical properties. Previous studies generally focused on FSSW without an interlayer or used an interlayer without an adequate stabilization mechanism, so the joint quality has not been optimal. Therefore, this study aims to investigate the effect of using a zinc (Zn) paste interlayer stabilizer on the mechanical properties of dissimilar Al 5052–SS400 joints. The experimental method was carried out by comparing FSSW joints without an interlayer and with a Zn interlayer stabilizer. Evaluation was conducted through shear tensile testing and hardness measurements. The research results show that the Zn interlayer stabilizer is able to significantly improve joint performance, with a maximum hardness value of 119 HV and the highest shear tensile strength of 4.8 kN at a dwell time of 12 seconds. These findings fill a research gap related to the role of interlayer stabilization in enhancing the quality of FSSW joints of dissimilar materials.
Co-Authors Abdul Azis Abdul Aziz Abdul Aziz Budianti, Siska Irma Leo Van Gunawan Lingga Arti Saputra Nabilah, Prita Retno Riandi, Maxc Reno Rona Sampurno, Carolus Borromeus Krishna