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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
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Search results for , issue "Vol 15 No 2 (2022)" : 6 Documents clear
PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN TARIK DAN BENDING KOMPOSIT SERAT SERABUT KELAPA BERMATRIKS POLIESTER Muhammad Aizul Haq; Viktor Naubnome; Najmudin Fauji
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.33390

Abstract

With natural fibers, namely coconut fibers that are easily found in the surrounding environment and literature studies that have been carried out, starting from the alkalization process, volume fraction, fiber length and utilization which will be used for fiberboard, the author wants to make a composite of coconut fiber fibers and do some The tests are tensile test and bending test. The tensile test results show the smallest tensile strength value at 10% fiber volume variation of 14.64 MPa and the largest tensile strength at 30% volume fraction variation with a value of 20.90 MPa. Increase in fiber volume variation 10% to variation The bending test results show the smallest bending strength value at 10% fiber volume variation of 34.81.64 MPa and the largest tensile strength at 30% volume fraction variation with a value of 49.41 MPa. The increase in the volume of the coco fiber fraction which is directly proportional to the tensile and bending strength values ​​is due to the increasing contribution of the fiber to withstand the load.
ANALISIS PERBANDINGAN PRODUKSI BIOGAS CAMPURAN KOTORAN AYAM DAN KOTORAN SAPI DENGAN STARTER RUMEN SAPI Doddy Suanggana; Faisal Manta; Reza Naufal Hanifudin
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.32494

Abstract

Biogas is a combustible gas produced by anaerobic activity or the fermentation of organic matter by microorganisms. This study produces biogas made from chicken manure and cow manure with a ratio of mass composition D1 (25%: 75%), mass composition D2 (50%: 50%), and mass composition D3 (75%: 25%) with a combined mixture that is 75% of the digester capacity and the addition of beef rumen by 1 kg in all variations as a starter. The purpose of this study was to examine the effect of composition on pressure, mass, temperature, and flame quality of the biogas production of chicken manure and cow manure with a mixture of cow rumen. Data were collected every 06.00 WITA and 18.00 WITA and temperature measurements were every 6 hours for 20 consecutive days. The results showed that the temperature at 18.00 WITA was better than at 06.00 WITA with the highest temperature occurring in the D2 variation of 29.85oC. The results of the measurement of biogas mass and pressure showed that the highest value was in the D3 variation at 18.00 WITA on the day to -9 with values ​​of 68.32 grams and 0.054 bar, respectively, with the total mass and pressure of biogas in the D3 variation of 401.14 grams and 0.391 bar. Keywords: Biogas, Chicken Manure, Cow Manure, and Cow Rumen.
STUDY OF INFLUENCE TIME IN THE IMPROVEMENT OF NICKEL CONTENTS ON LIMONITE PROCESSING USING NAOH Rini Riastuti; Kautsar Muwahhid; Ahmad Maksum; Johny Wahyuadi Soedarsono; Mhd. Ibkar Yusran Asfar
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.34326

Abstract

Logam nikel didominasi oleh bijih sulfida, namun 70% sumber nikel dunia adalah bijih laterit, yang hanya menyumbang 40% dari output nikel dunia. Menanggapi kenaikan permintaan dan penurunan deposit nikel sulfida, pemurnian nikel bijih laterit dan teknik produksi hidrometalurgi untuk bijih laterit semakin intensif. Silikon dapat diekstraksi dari bijih nikel laterit dengan NaOH. Berbagai penelitian menunjukkan bahwa metode ini dapat meningkatkan kandungan nikel dari residu pelindian, memungkinkan limbah sisa untuk digunakan kembali dan mengurangi dampak lingkungannya. Penelitian ini bertujuan untuk mengetahui apakah mekanisme pengendapan dapat secara efektif memisahkan nikel dan kobalt dari pengotor lainnya. Limonit dilindi menggunakan larutan NaOH dengan konsentrasi 60 g/L. Durasi pelindian bervariasi antara 30, 60, 90, dan 120 menit. Pengaruh NaOH sebagai larutan pelindian diselidiki dengan pengujian XRD dan AAS. Hasil dari analisis XRD menunjukkan proses pelindian menggunakan NaOH membentuk fasa nikel dan kobalt oksida dan hidroksida dari goetit dan NaOH, dengan fasa lain pada residu pelindian terbentuk seiring dengan bertambahnya waktu pelindian. Pengujian AAS menunjukkan nilai perolehan nikel negatif yang dapat dihasilkan oleh kontaminan pada sampel awal, pelarutan ion nikel, dan kopresipitasi, dimana ion nikel diserap ke dalam fase besi hidroksida. Selain itu, uji AAS juga menunjukkan nilai perolehan kembali kobalt pada waktu pelindian 30 menit adalah 1,41%, yang berarti bahwa waktu tersebut adalah waktu optimum untuk pelindian kobalt. Sedangkan waktu yang melebihi 30 menit dapat menurunkan kadar kobalt karena pengenceran ulang dan pengendapan bersama.
ANALISIS KINERJA MESIN AMG CNC PLATE CUTTING MENGGUNAKAN METODE OEE (OVERALL EQUIPMENT EFFECTIVENESS) Dwika Daffa Ashari; Viktor Naubnome; Najmudin Fauji
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.32408

Abstract

In the industrial world, technology is an important thing that can help improve the quality of the industry. Every company that uses technology definitely needs an adequate maintenance system for tools and machines. The purpose of maintenance is to prevent unexpected machine breakdowns that can result in the production process stopping, endangering worker safety and increasing machine repair costs. One of the machines that are often used in the production process at PT XYZ is the AMG CNC plate cutting machine. Therefore, one method to determine the effectiveness of a cutting machine is Overall Equipment Effectiveness (OEE). Overall Equipment Effectiveness is a measurement made on performance related to the availability of process productivity and quality. As a result, by applying the OEE (Overall Equipment Effectiveness) method for performance analysis of the AMG CNC plate cutting machine, we can find out the value for availability of 91%, performance efficiency of 96%, and rate of quality product of 99%, the measurement results of the AMG CNC plate machine cutting in January 2021 using the OEE method of 86% which has passed the value of the OEE world standard of 85%. the value of the six big losses obtained is the breakdown loss value of 1.8%, the set up and adjustment value of 10%, the idle and minor stoppage value of 3%, the value of reduce speed losses of 5.3%, the value of process defect losses of 1 ,1%, the value of reduce yield losses is 0.06%.
AKURASI MESIN CNC ROUTER LOW BUDGET BERBASIS MACH 3 Puguh Elmiawan; Dharmanto Dharmanto; Adik S.W; M Fazalul M; Arief R
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.34645

Abstract

This paper discusses the building of a low-cost CNC router machine. In designing a CNC machine using an electrical actuator as the driving force, we use a nema 23 stepper motor combined with a pitch 2 mm timing belt to drive the machine on the x and y axes. On the z-axis, we use a stepper motor and a linear screw to drive the machine. This machine is often used to cut and engrave wood, acrylic, and PCB objects. The design drawing that has been made on the PC is sent to the microcontroller using serial communication, then the CNC performs work on the thing according to the coordinates. The spindle will create a pattern on the thing automatically according to the design drawing. Measurement was made using a caliper with an accuracy of 0.05 mm. This CNC machine is performing duly as ordered by the mach3 micro controller. The machine test results show an accuracy value of 99.85% on the x-axis, 99.74% on the y-axis, and 99.12% on the z-axis.
SIMULASI BEBAN RANGKA PADA MESIN PENGGILING SEKAM PADI MENGGUNAKAN PERANGKAT LUNAK Muhammad Alfarhan Ficki; Kardiman Kardiman; Najmudin Fauji
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.32447

Abstract

One of the main components in the rice husk grinding machine is the frame. The frame is the most important fundamental part, especially for use in machinery, because the function of the frame is as a support for the components themselves, and is able to withstand axial, normal and moment forces to maintain stability in the machine. The strength of the frame depends on the shape or type of construction which is able to withstand torsional loading from the engine and also withstand the shock that is given when the engine moves. So the purpose of this study is to find out how to simulate the loading of the frame on a rice husk grinding machine using SolidWorks software, and to know the comparison of theoretical calculations and simulations for 3 material variations on the frame of a rice husk grinding machine in a static state. The method used is the Finite Element Method (MEH), MEH with software can determine the loading points. From this test, researchers can find out which points have a minimum load, a medium load, and a maximum load. The results of the analysis provide the safety value of original and processed materials, changes in materials can be concluded which material is more ideal. The results of this study are that among AISI 1010, ASTM A36, and AISI 1045 materials, the best material is AISI 1045 material because it has the greatest safety factor value of 12.15.

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