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All Journal Journal of Engineering and Management in Industrial System JURNAL CRANKSHAFT Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Yumary: Jurnal Pengabdian kepada Masyarakat
Ratlalan, Roberth Marshall
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Aerospace Engineering Humanities Automotive Engineering Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PENGARUH KEKUATAN IMPAK MATERIAL BAJA ST37 TERHADAP KUAT ARUS PENGELASAN SMAW 80 DAN 85 AMPERE Ratlalan, Roberth Marshall; Sudirman, Zainal; Darmadi, Herry
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7155

Abstract

Ampere merupakan faktor penting dalam pengelasan yang disebabkan akibat peningkatan arus yang  mempengaruhi pada peningkatan panas. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh kuat arus listrik variasi arus 80 ampere dan 85 ampere terhadap kekuatan impak. Jenis kampuh yang digunakan dalam penelitian ini adalah kampuh V tunggal dengan sudut 30°. Spesimen dilakukan pengujian impak dilakukan dengan metode charpy menggunakan ASTM Vol 03-03 E 23. Hasil dari pengujian impak pada spesimen variasi arus menunjukkan bahwa nilai kekuatan impak variasi arus 80 ampere energi yang diserap sebesar 275 joule dan harga impaknya sebesar 3,4059 Joule/mm2. Kemudian pada arus  85 ampere energi yang diserap sebesar  257 joule dan energi impaknya sebesar  3,2125 Joule/mm2 dengan jenis patahan ulet.Kata kunci — Ampere (A), Kampuh V Tunggal , Kekuatan Impak
SIMULASI HASIL PENGUKURAN DIMENSI GAUGE BLOCKS MENGGUNAKAN COORDINATE MEASURING MACHINE TYPE CRYSTA - APEX S Ratlalan, Roberth Marshall; Valentine, Odilia
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 10, No 1 (2024): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v10i1.9364

Abstract

Dunia manufaktur mempunyai suatu standar yang tinggi karena dianggap sebagai salah acuan atau dalam penentuan toleransi geometris. Hal tersebut dilakukan untuk menjaga kualitas produk yang dihasilkan mempunyai prioritas yang cukup baik. Coordinate Measuring Machine (CMM) merupakan alat pengukur multi fungsi berkecepatan tinggi yang menghasilkan akurasi dan efisiensi pengukuran yang tinggi. Hasil simulasi pengukuran gauge block dengan menggunakan CMM untuk probe sentuhan dan probe scanning menunjukan hasil yang sangat efektif untuk mengetahui bentuk geometri permukaan suatu part benda kerja atau komponen sehingga dapat mengurangi resiko kerusakan dan hasil simulasi untuk setiap pengukuran yang ditampilkan dapat dilihat secara visual menggunakan perangkat lunak yang terpasang pada mesin CMM.
ANALISA NILAI PENYIMPANGAN MESIN BUBUT CNC HARDINGE GSV 200 MENGGUNAKAN MATERIAL NILON Ratlalan, Roberth Marshall
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 2 (2023): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i2.8472

Abstract

AbstrakSeiring dengan ilmu pengetahuan dan perkembangan teknologi, suatu alat atau mesin dituntut untuk dapat memberikan kepuasan atau pelayanan yang prima kepada konsumen meliputi kepresisian, ketepatan, fleksibilitas, efesiensi waktu dan kapasitas produk. Penelitian ini bertujuan untuk menetukan kelayakan mesin bubut CNC Hardinge GSV200. Diketahui Nilai persentase error tingkat ketepatan pada mesin bubut CNC Hardinge GSV200. Metode yang digunakan unutk pemecahan permasalahan ini dengan cara mengukur hasil pembubutan menggunkan micrometer skrup dengan tingkat ketelitian 0,001 mm untuk diameter dan jangka sorong  dengan tingkat ketelitian 0,05 mm untuk panjang pemakanan. Benda kerja yang di gunakan yaitu poros bahan nilon batangan dengan diameter awal 50 mm dan panjang 75 mm. Hasil pengujian menunjukan bahwa kinerja mesin bubut CNC Hardinge GSV200 terhadap 10 spesimen benda kerja dengan 2 jenis program yang berbeda. Berdasarkan Hasil penelitian yang dilakukan menunjukan bahwa sumbu X memiliki tingkat ketepatan 99,80% dan Sumbu Z memiliki tingkat ketepatan 99,59%.Kata Kunci : Mesin Bubut CNC, Tingkat Ketepatan, Persentase Nilai  Error  AbstractAlong with science and technological developments, a tool or machine is required to be able to provide satisfaction or excellent service to consumers including precision, accuracy, flexibility, time efficiency and product capacity. This study aims to determine the feasibility of the CNC Hardinge GSV200 lathe. The value of the percentage error of the accuracy level on the CNC Hardinge GSV200 lathe is known. The method used to solve this problem is to measure the results of turning using a micrometer screw with an accuracy of 0.001 mm for the diameter and a caliper with an accuracy of 0.05 mm for the length of the feed. The workpiece used is a nylon rod with an initial diameter of 50 mm and a length of 75 mm. The test results show that the performance of the CNC Hardinge GSV200 lathe against 10 workpiece specimens with 2 different types of programs. Based on the results of the research conducted, it shows that the X-axis has an accuracy rate of 99.80% and the Z - axis has an accuracy rate of 99.59%.Keywords : CNC Lathe, Level of Accuracy, Percentage of Error Value. 
Enhancing Local Food Industry: Production of “Sehati” Marning Corn in Bantaeng Regency Lestari, Mega Fia; Syaiful, Syaiful; Irwan , Muhammad; Sitanggang, Boy Chandra; Hermansyah, Hermansyah; Odilia Valentine; Aras, Neny Rasnyanti M; Ratlalan, Roberth Marshall; Abidin, Zainal; Supu, Abd Rachman
Yumary: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): Maret
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/yumary.v5i3.3118

Abstract

Purpose: The local food processing business is essential to the Indonesian economy. Lumpangan Village in Bantaeng Regency, South Sulawesi, has great potential due to the Small and Medium Enterprises (SME) product "SEHATI," which manufactures Marning Corn. However, the need on sunshine for drying limits production, reducing output during the rainy season. To address this issue, the Akademi Komunitas Industri Manufaktur Bantaeng community service programme strives to improve corn product quality through the use of mechanical dryers and the education of workers on Good Manufacturing Practices (GMP). Methodology: This program's methodology comprises collaborating with village officials, observing SMEs, developing solutions, implementing the community service programme, and assessing the program's success. Results: Observations show that mechanical dryers are successful in resolving drying problems, and GMP education enhances product quality. Conclusions: The service program was successful in raising the marning corn production by UMKM "SEHATI" and establishing the program as a long-term initiative. In addition, the program received the full support of village officials by the successful in overcoming production constraints during the rainy season through the purchase of corn dryers and Good Manufacturing Practice (GMP) education. Limitations: Prior to deployment, the primary drawback was a reliance on dry weather conditions. Contributions: This programme makes a substantial contribution, with the expectation that its long-term success will help to create other SMEs in Lumpangan Village and increase the quality of Marning corn products through better drying technology and worker education.
IMPLEMENTATION OF LEAN MANUFACTURING TO MINIMIZE WASTE IN THE PROCESS OF PLASTIC BOX 260 USING VSM AND AHP METHOD Ratlalan, Roberth Marshall; Tama, Ishardita Pambudi; Sugiono, Sugiono
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 5 No. 2 (2017)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2017.005.02.2

Abstract

Abstract one of the national manufacturing industry company engaged in the manufacture of military products with the resulting product is plastic box 260. To minimize the waste that occurs lean manufacturing approach is assisted by one of the tools in the concept of lean value stream mapping (VSM) aims to describe the overall Information from the flow of raw materials to finished products. Waste identification begins with the waste relationship matrix (WRM) and waste assessment questionnaire (WAQ) to determine the percentage of waste with the 3rd largest rank. Further analysis is done by analytical hierarchy process (AHP) aims to know the criteria of weighting from waste that has the highest ranking. The recommendation of improvement based on the analysis of waste with the 3 largest (unccessary inventory, overproduction, motion) and takt time calculation is to apply 5S, to apply forecasting, to add a working facility in the form of cooling room, to do maintenance activities such as preventive maintenance, addition of tools and machine, Setting laser machine, and layout design of production floor layout.
PROSES MANUFAKTUR SPUR GEAR CUTTER MENGGUNAKAN MESIN FRAIS UNIVERSAL KNEE MILLING MODEL 57-3C Ratlalan, Roberth Marshall; Arhan, Muhammad
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16932

Abstract

Spur gears are essential components in power transmission systems and are widely used in various mechanical applications. As industrial needs evolve, the use of engineering polymer materials such as Teflon has become an attractive alternative due to their low coefficient of friction, good chemical resistance, low noise levels, and light weight. This study aims to study the manufacturing process for a Teflon (PTFE) spur gear cutter using a Knee Milling Machine Model 57-3C universal milling machine and to evaluate the resulting product's quality control methods. The method used involves several stages: gear dimension design, material and tool preparation, machining parameter settings, tooth formation using a modular milling cutter and dividing head, and finishing, spline groove creation, and threading. Quality control is performed through dimensional measurements using calipers and visual inspection to detect surface defects, cracks, and deformation caused by the cutting process. The results show that a Teflon spur gear cutter with 45 teeth and a module of 2.5 can be manufactured satisfactorily using a universal milling machine. All main dimensions measured are within a tolerance of ±0.20 mm, and no significant defects were found during visual inspection. This shows that the universal milling machine Knee Milling Machine Model 57-3C can be used effectively for manufacturing spur gears made of engineering polymers with an adequate level of accuracy. Keyword : Spur gear, Teflon (PTFE), Knee Milling Machine Model 57-3C, Dividing head, Quality Control.
Co-Authors Aras, Neny Rasnyanti M Arhan, Muhammad Darmadi, Herry Hermansyah Hermansyah Irwan , Muhammad Ishardita Pambudi Tama Mega Fia Lestari Odilia Valentine Sitanggang, Boy Chandra Sudirman, Zainal Sugiono Sugiono Supu, Abd Rachman Syaiful . Valentine, Odilia Zainal Abidin