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All Journal Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Ilmiah Teknik Mesin Poros IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Rosehan Rosehan, Rosehan
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Humanities Automotive Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Analisis Parameter Pengelasan Rotary Friction Welding pada Material S45C P, Jerramey P; Lubis, M. Sobron Y; Rosehan, Rosehan
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.604 KB) | DOI: 10.36418/syntax-literate.v6i2.5134

Abstract

Dalam industri logam, material berbentuk silinder padat sangat dibutuhkan. Masih sulit untuk menggabungkan bahan silinder padat saat menggunakan pengelasan fusi. Kesulitan dalam membuat sambungan tersebut dapat diatasi dengan melakukan Rotary Friction Welding (RFW). RFW ini juga dapat dilakukan dengan menggunakan mesin bubut yang tersedia dengan menentukan parameter pengelasan yang tepat agar mendapatkan hasil yang terbaik. Penelitian ini bertujuan untuk mengetahui parameter yang dominan pada proses las gesek. Penelitian ini menggunakan data sekunder yang diperoleh dengan mengumpulkan jurnal-jurnal yang memiliki hubungan dengan penelitian. Perbandingan dua data sekunder digunakan untuk menunjukkan korelasi antara varian yang paling dominan dan paling efektif. Metode analisis varians (Anova) digunakan untuk memperoleh nilai korelasi dari grafik koefisien, plot probabilitas normal tegangan tarik maksimum, dan signifikansi data penelitian ini. Waktu gesekan merupakan variabel yang paling signifikan karena korelasi antara waktu gesekan dan kecepatan putaran berpengaruh dominan terhadap kekuatan tarik maksimum, semakin lama waktu gesekan dilakukan pada benda kerja maka semakin tinggi kekuatan tarik Ultimate benda kerja
ANALISIS ALIRAN PADA BUCKET TURBIN PELTON 1 KW DENGAN VARIASI SPEAR NOZZLE MENGGUNAKAN METODE CFD Darmawan, Steven; Sutanto, Hadi; De Fretes, Anthon; Octaviani, Sandra; Tanujaya, Harto; Rosehan, Rosehan; Marcellio, Ricco
POROS Vol. 19 No. 1 (2023): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v19i1.25627

Abstract

Pelton turbine have been used for harvesting renewable energy by extracting kineticenergy of water into mechanical energy for more than 100 years. This characteristic makes thissystem remains potential to achieve Goals #12 SDGs. During the operation, the performance ofPelton Turbine is affected by several parameters: hydraulic power, water flow rate, bucketdesign, and nozzle. Among others, nozzle design is the most challenging since this part isresponsible to drive the water direction strike the buckets, converting impulse. The performanceof existing 1 kW Pelton Turbine equipped with 15mm Spear Nozzle is believed can be improvedby varying the nozzle diameter by using low-cost CFD simulation procedure. Ansys Fluent fromAnsys Student 2021 R1 is used in this research. Represented by two-buckets facing spear nozzle,three dimensional CFD simulation is conducted. The nozzle diameter is varied to 15 mm, 14 mm,and 13 mm from two configurations. The first and second configuration is done with water flowrate 3,3 kg/s and 1,3 kg/s respectively. The results show that 15 mm nozzle diameter can producehigher power as high as 594,08 Watt with the first configuration. Even though at the secondconfiguration this 15mm nozzle diameter did not produce the highest power, other parameterssuch as splashing water and erosion effect still show that the 15mm nozzle diameter performedbetter than others. This simulation results also consistent with experimental results whichperformed by using first configuration and 15mm nozzle diameter. The results also show that thesistem performance is much higher at higher water flow rates. Therefore, the development of thesystem can be continued to by using spear nozzle with diameter higher than 15mm.
Analisis Hasil Pembentukan Kayu Billiard Menggunakan Mesin Bubut dan Mesin Router Relvin; Rosehan, Rosehan; Lubis, Muhammad Sobron Yamin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.158

Abstract

Making billiard sticks is a production process that requires high precision to produce quality products. This research aims to analyze the comparative performance of various cutting tools in the turning process for making billiard sticks. Proper cutting tools are essential in the pool cue manufacturing industry to achieve precise and quality results. This research uses two types of processes: the turning and the routing machine processes. The turning process is carried out on rosewood/snorkelling (Dalbergia latifolia) woodworkpieces, which will be used as billiard sticks. This research aims to evaluate dimensional accuracy and production process time. The turning process is carried out by varying the cutting speed parameters and feed depth. This research focuses on optimizing lathes' use to produce stick dimensions that comply with international standards. The study showed that turning tapered wood in a lathe to make billiard sticks took longer (376.2 seconds) than using a router machine (225.6 seconds).
Pengaruh Kecepatan Potong Terhadap Kekasaran Benda Kerja Baja AISI 1018 pada Proses Pembubutan Kering Marcelino, Yonathan Farrel; Lubis, Muhammad Sobron Yamin; Rosehan, Rosehan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.209

Abstract

Cutting speed is one of the crucial parameters in the turning process that significantly affects the final quality of the workpiece surface. This study aims to evaluate the impact of cutting speed variations on the surface roughness level of AISI 1018 steel. The machining process was carried out using a chisel with a tip radius of 1.2mm, and the cutting speed was varied at three levels, namely 42m/min, 66m/min, and 105m/min. Surface roughness measurements were carried out using a Surface Roughness Tester. The experimental results showed that increasing cutting speed tended to decrease surface roughness. The lowest roughness value of 2.224 μm was obtained at a cutting speed of 105 m/min. This phenomenon occurs because at higher cutting speeds, cutting forces and vibrations are reduced, so that the machining process becomes more stable and produces better surface quality. This study shows that cutting parameters play an important role in optimizing the final results of conventional turning processes.
Pengaruh Variasi Tool Nose Radius Pahat Karbida Terhadap Kekasaran Permukaan Baja AISI 4140 Pada Proses Bubut Gimastian, Muhammad Iqbal; Lubis, Muhammad Sobron Yamin; Rosehan, Rosehan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.216

Abstract

The turning process is one of the machining methods used to produce cylindrical material shapes. In this experiment, meticulous parameter variations were carried out to obtain optimal surface roughness values. The parameters that varied include the chisel angle and feed rate. The feed rates used were precisely set at 0.045 mm/rev, 0.05 mm/rev, and 0.056 mm/rev. The variations in the chisel angle used were 0.4 mm, 0.8 mm, and 1.2 mm, ensuring a comprehensive exploration of the parameter space. Meanwhile, the spindle speed was kept constant at 1120 rpm, and the cutting depth was set at 0.2 mm. After testing, the surface roughness values were obtained for each parameter variation. The lowest roughness value of 0.782 µm was obtained at a combination of a chisel angle of 0.4 mm and a feed rate of 0.045 mm/rev. This finding has practical implications, as it suggests a specific parameter combination that can be used to achieve optimal surface roughness. Meanwhile, the highest roughness value of 2.206 µm was found in the combination of a chisel angle of 1.2 mm and a feed rate of 0.045 mm/rev. From these results, it can be concluded that the parameters that produce the most optimal surface roughness are in the variation of a chisel angle of 0.4 mm and a feed rate of 0.045 mm/rev, with a roughness value of 0.782 µm.
Penggunaan Progressive Dies Untuk Mengurangi Ketinggian Burr Pada Pembuatan Connection Plate Heater Lam, Silvester; Lubis, Sobron; Rosehan, Rosehan
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v9i3.15432

Abstract

Dies merupakan sebuah alat tekan yang berfungsi untuk memotong atau membentuk plat logam yang berbentuk lembaran (sheet metal) menjadi bentuk yang diinginkan. Dies umumnya terdiri dari beberapa jenis seperti conventional dies, inverted dies, compound dies, dan progressive dies. Salah satu komponen yang dapat dibuat menggunakan dies adalah connection plate heater. Penelitian ini bertujuan untuk memperoleh hasil produksi connection plate heater dengan ketinggian burr yang minim. Penelitian ini dilakukan dengan melakukan pengujian pada compound dies yang biasanya dipakai untuk memproduksi connection plate heater, dari 10 spesimen didapatkan rata-rata ketinggian burr pada proses piercing 0,628 mm dan pada proses blanking 0,239 mm, sehingga rata-rata burr dari 10 spesimen connection plate heater menggunakan compound dies adalah 0,434 mm. Karena hasil burr dari compound dies cukup tinggi, selanjutnya dilakukan perancangan ulang dies untuk memproduksi connection plate heater. Jenis dies yang dipilih adalah progressive dies dengan pertimbangan proses produksi nantinya dapat dilakukan dengan menggunakan autofeeder. Dari hasil rancangan progressive dies ini, kemudian dilakukan pengujian dan diambil 10 spesiemen didapatkan rata-rata ketinggian burr pada proses piercing 0,123 mm dan pada proses blanking 0,108 mm, sehingga rata-rata burr dari 10 spesimen connection plate heater menggunakan progressive dies adalah 0,116 mm.
Analisis Dampak Perubahan Arus Pengelasan Terhadap Kekuatan Sambungan Las Pada Material Stainless Steel 316 Salim, Victor; Rosehan, Rosehan; Lubis, Sobron Yamin
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16384

Abstract

In a situation of increasing urbanization in the capital, the demand for decent and quality housing is also increasing rapidly. This increase was in line with increasing market demand for specific construction products such as railings, doors and windows which are of good quality. The research method and data collection will start from nine pairs of 316 stainless steel plates which will be welded using SMAW welding. Welding on stainless steel plates will be carried out with varying welding currents of 60 A, 70 A and 80 A. Each of these welding currents will be carried out on three stainless steel plates. The results showed that the use of a higher variation of welding current in the welding process resulted in a higher strength of the welded joint. The elastic modulus can decrease due to several factors such as the presence of microscopic cracks, changes in crystal structure, or changes in the bonds between atoms or molecules of the material. The strength of welded joints in stainless steel 316 material can also be affected by other factors besides variations in welding current. Parameters such as mains voltage, welding time and type of electrode also contribute to the strength of the welded joint.
Analisis Peningkatan Kinerja dan Umur Pahat Karbida Pada Proses Pembubutan Baja Aisi 1045 dengan Menggunakan Coating Tialn Laurenzo, Michael; Lubis, Sobron Yamin; Rosehan, Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16385

Abstract

Lathe is a machine tool that is used to cut the object being rotated. Lathe itself is a workpiece cutting process in which the incision is made by rotating the workpiece and then being applied to the tool which is moved translationally with the rotary axis of the workpiece. In this study the method used was an experimental research method consisting of TiAlN coating to turning process. The results showed that the cutting speed is inversely proportional to the life of the tool, where the higher the cutting speed, the shorter the life of the tool. The higher the cutting speed, the lower the surface roughness value. TiAlN coating has a significant effect on the surface quality of the workpiece and the life of the tool, where the TiAlN coating has a lower surface roughness value than the tool without coating at the same cutting speed.
Pengaruh Perbedaan Grade Insert Carbide terhadap Nilai Keusan Mata Pahat pada Material Baja Aisi 4140 Chistianto, Felix; Rosehan, Rosehan; Lubis, Sobron Yamin
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16386

Abstract

In the permesian process for making various kinds of products, various types of machines are needed, one of which is using a lathe (turning machine). In this study the method used was an experimental method, which was carried out using a conventional lathe by varying the grade of the carbide bit against AISI 4140 steel material. The results showed that the bit with grade IC9250 with a coated CVD (Chemical Vapor Deposition) content had higher coating strength. strong, so that the wear that occurs is long in the 189th minute while the IC907 grade chisel with a coated TiAlN (Titanium Aluminum Nitride) content has a weak coating strength, so the wear that occurs is faster in the 182th minute. chisel is directly proportional to the cutting time, because the rpm when the machining process is used is constant. In general, the wear that occurs on the tool eye is abrasive and abrasive wear.
Analisis Kekuatan Tarik Sambungan Plat Stainless Steel 316L pada Proses Spot Welding Prakoso, Adjie Caesar; Lubis , Sobron Yamin; Rosehan, Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16387

Abstract

This study aims to determine the effect of variations in welding current and distance on the strength of the weld on 316L stainless steel material through a tensile test. The type of research method and data collection will begin through the welding process of eighteen pairs of stainless steel plates using spot welding. Welding will be carried out with variations in the current and distance of the welding points. After carrying out the stainless steel welding process, a tensile test will then be carried out to determine the effect of current variations and the distance of the welding points on the strength of the welded joints in stainless steel. Based on the results of the test data obtained, it shows that a voltage of 1.75 V produces an electric power of 6317.88 Watts and a voltage of 2.20 V produces an electric power of 9249.93 Watts with a constant welding time of 2 seconds. The highest tensile strength is specimen D with a spacing of 10 mm and a voltage of 2.20 V, which is 14,765 N, while the lowest tensile strength is specimen C with a spacing of 30 mm and a voltage of 1.75 V, which is 10,224 N. At a current voltage of 1.75 Volts, the welding distance is 20 mm produced is 3490.17 Mpa and a current voltage of 2.20 Volts 20 mm welding distance produced is 3682.33 Mpa the results obtained the greater the current used, the greater the resulting tensile strength. The value of the elastic modulus is inversely proportional to the current strength and welding distance. This can be shown in the results of the tensile strength test data obtained, namely specimens with a current of 1.75 volts with a welding distance of 10 mm have a greater modulus value than specimens with a current of 2.20 volts with a welding distance of 10 mm.
Co-Authors Anthon de Fretes, Anthon de Fretes Chistianto, Felix Eduar, Dionisius Gimastian, Muhammad Iqbal Hadi Sutanto Harto Tanujaya Hidayat, Ega Prasetya Lam, Silvester Laurenzo, Michael Lubis , Sobron Yamin Lubis, M. Sobron Y Lubis, Muhammad Sobron Yamin Marcelino, Yonathan Farrel Marcellio, Ricco P, Jerramey P Prakoso, Adjie Caesar Relvin Salim, Victor Sandra Octaviani Sobron Lubis Steven Darmawan, Steven Taher, Bruce Heofilus Wasistha, Briangga Wira