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JMPM (Jurnal Material dan Proses Manufaktur)
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 25803271     EISSN : 26565897     DOI : 10.18196/jmpm
Core Subject : Engineering,
Engineering Mechanical Engineering
Jurnal Material DAN Proses Manufaktur focuses on the research and research review in the field of engineering material and manufacturing processes. The journal covers various themes namely Design Engineering, Process Optimization, Process Problem Solving, Manufacturing Methods, Process Automation, Material research and investigation, Advanced Materials, Nanomaterials, Mechanical solid and fluid, Energy Harvesting and Renewable Energy.
Arjuna Subject : -
Articles 275 Documents
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Semiconductor Based on Oil Palm Empty Fruit Bunch Alkali Cellulose Adiati, Rima Fitria; Nikmatin, Siti; Irmansyah, -
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.20521

Abstract

Oil palm empty fruit bunch (OPEFB) is a readily available biomass resource in Indonesia. Its processing into alpha-cellulose and alkaline cellulose offers promising economic opportunities and sustainable sensor development. This study focuses on extracting alpha-cellulose from OPEFB using kraft hydrolysis method and converting it into alkaline cellulose using NaOH solution. The 15, 20, and 25% variation of NaOH percentage during pulping resulting in different pulp quality indicated by alpha-cellulose content. The resulting alkali cellulose exhibits semiconductor properties with an energy gap of 3.6 eV, demonstrating its potential for light sensor or photodiode applications. Additionally, the optical energy gap of alkali cellulose-polyvinyl alcohol composites is investigated.
Fabrikasi Papan Serat Tandan Kosong Kelapa Sawit dengan Penambahan Bahan Fluoresensi Fosfor
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19615

Abstract

Serat bahan alam dapat dijadikan pengganti material komposit yang ramah lingkungan. Serat tandan kosong kelapa sawit (TKKS) merupakan salah satu serat alam hasil pengolahan industri kelapa sawit yang tersedia dalam jumlah yang besar. Pemfaatan serat TKKS sebagai papan serat yang inovatif belum banyak dikaji secara fisis. Penambahan zat aditif fluorosensi memberikan keunggulan produk kayu maupun papan serat agar memiliki nilai estetika yang tinggi. Tujuan penelitian ini memfabrikasi biokomposit papan serat inovatif berbasis serat TKKS dengan penambahan bahan fluoresensi fosfor. Papan serat difabrikasi dengan metode hand lay-up dan cold compaction. Komposisi utama papan serat terdiri atas serat TKKS, resin epoxy, dan 5 g bubuk posfor. Kandungan serat TKKS divariasikan mulai dari 76% sampai 86%. Hasil pengujian fisis menunjukkan nilai densitas papan serat berkisar 0,34 - 0,59 g/cm³ dan daya serap airnya 105,22 - 156,475%. Nilai kapasitas panas spesifik papan serat berikisar 0,34 - 2,2 J/g˚C dan konduktivitas termalnya 0,001-0,002 W/mK. Sementara, besar bending strength sebesar 1,30 – 6,42 Mpa yang relatif sebanding dengan papan serat bio-komposit. Penambahan fosfor berpengaruh terhadap sifat termal papan serat, sehingga cukup baik bila diaplikasikan sebagai bio-insulator yang memiliki fitur fluorosensi.
Perancangan Modifikasi Electric Hand Truck dengan Timing Belt untuk Jalan Bertangga
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.16194

Abstract

In today's industrial needs, the most common material handling equipment in daily uses is hand truck, because of the price itself is quite cheap, flexible, and easy to operate. However, one of the weaknesses of the hand truck is it can’t through places that have different heights such as stairs. To overcome this problem, the hand truck will be modified using a timing belt which make it possible the hand truck to pass through stairs. The design modification begins with collecting the main hand truck data, followed by making several design concepts, selecting the suitable design modification concept to overcome the staircase problem and finally analyzing and calculating the components used. Design modifications are illustrated in 3D shape using Solidworks software. The result of the modified design is an electric hand truck with a timing belt with dimensions of (1037 x 455 x 1102) mm for stair-climbing with a maximum angle of stair slope equal to 30 degrees which is able to lift a load of 100 kg at a speed of 0.8 m/s.
Analisis Sistem Pendingin Baterai Li-Ion Berbentuk Silindris Menggunakan Metode Computational Fluid Dynamics (CFD)
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19334

Abstract

Penurunan kinerja baterai, cycle life, dan safety baterai disebabkan faktor kerja baterai LiFePo4 (Lithium iron phosphate) melebihi temperature operasional 40OC. Permasalahan penelitian adalah distribusi panas dengan variasi sistem pendinginan dan pengaruh fluida untuk baterai LiFePo4. Tujuan penelitian adalah menganalisis persebaran panas baterai dan temperature baterai LiFePo4 dibawah temperature operasional. Metode penelitian adalah kuantitatif eksperimen, dengan dilakukan simulasi Computational Fluid Dynamics (CFD) untuk sistem pendingin baterai LiFePo4. Baterai LiFePo4 tanpa pelat pendingin disimulasikan untuk hasil temperature maksimum baterai. Temperature operasional baterai lebih rendah 40OC dengan tambahan pelat pendingin yang dirangkai pada baterai dengan variasi fluida air dan udara yang mengalir dalam pelat pendingin. Hasil dan kesimpulan penelitian adalah data kenaikan temperature maksimum baterai 1,2OC dan persebaran panas yang merata pada permukaan baterai dengan variasi pelat pendingin yang dialiri fluida air.
The Effect of Adding a Square Disturbance on the Flow Characteristics across Circular Cylinders Arranged in Tandem Riani, Novi Indah; Lostari, Aini; Ulum, Miftahul; Hakim, Ainul
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.21898

Abstract

Circular cylinder is one form of bluff body that is often used in engineering and industrial applications. The addition of a square placed in front of the circular cylinder aims to accelerate the flow from laminar to turbulent so that flow separation can be delayed more slowly so that the resulting pressure drag is smaller. The research method used was experimental using two circular cylinders arranged in tandem with a diameter (D) of 25 mm and variations in the distance between cylinders (L/D) 2;2,5;3;3,5;4 and two square-shaped square bodies (SDB) in front of each cylinder with dimensions of 4 mm. Position of SDB angle is 30o and the gap distance is 0.4 mm. The Reynolds number used is 2.3x104. This study aims to obtain the distribution of pressure coefficient (CP), drag pressure coefficient (CDP) and velocity profile behind the test specimen. The results showed that the addition of two square-shaped square bodies on each cylinder can reduce the drag force on the cylinder which causes a difference in values, where the largest pressure coefficient value occurs at a distance of L/D 4 with a value of -1.073 and the lowest value of drag pressure coefficient (CDP) at a distance of L/D 2 on the upstream cylinder with a value of 0.0786. While the downstream cylinder is located at a distance of L/D 3 with a value of -0.079 and the lowest speed value is located in the variation of L/D 4 with a value of 9.52 m/s.
Static and Dynamic Analyses of Spindle Collet Made of Different Materials Using Finite Element Modeling Omar, Mohd Hazri; Allias, Mohd Fadzil; Radzi, Rohaizan; Abdul Halim, Mohamad Nazri
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.20467

Abstract

The spindle collet, a critical component in various machine tools, plays a pivotal role in determining the success of machining operations. This paper aims to study the static and dynamic parameters of collet structures made from three different materials using the finite element method. A three-dimensional model and computer simulation were conducted in Autodesk Inventor software. Simulations are performed using identical boundary conditions and mesh size. Static analysis is performed with varied applied forces where total deformation and Von Mises stress are measured. For the dynamic analysis, the natural frequencies and mode shapes are measured up to the first five modes. The variations in stress is minimal when the material is altered. The magnitude of deformation varies significantly with changes in material. The relative deformation values demonstrate that carbon steel deforms more than alloy steel by almost 3%, while stainless steel deforms more than alloy steel by 6%. Materials with higher Young's modulus and lower density have been found to increase the natural frequencies, reducing total deformation and von Misses stress. The use of alloy steel in the industry offers an advantage over the other two materials. The results provide improved insight into the appropriate materials for the collet.
Analisis Pengaruh Parameter Hardening terhadap Distorsi Spesimen CT58 dengan Metode Taguchi
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.20073

Abstract

Penelitian ini membahas masalah distorsi komponen mesin rokok setelah proses hardening. Penelitian ini berfokus pada perubahan dimensi diameter dalam lubang, lebar gap, dan kerataan pada komponen. Temperatur austenit, media quench, dan  temperatur tempering diperiksa untuk menentukan pengaruhnya terhadap distorsi. Komponen terbuat dari kelompok baja mesin S45C setara AISI 1045. Penelitian ini menggunakan spesimen bernama CT58 dengan variasi temperature Austenite 820˚C 840˚C 860˚C, lalu variasi media quenching oli, oli+air, dan air dan variasi temperature Tempering 200˚C, 250˚C, dan 300˚C. Penelitian ini menggunakan Design of Experiment, dilanjutkan dengan analisis statistik dengan aplikasi minitab. Hasil penelitian didapatkan bahwa distorsi pada spesimen CT58 paling besar dipengaruhi oleh suhu Austenite dan diikuti oleh media Quench dan suhu Tempering. Temperatur austenit 820°C, media quench oli, dan temperatur tempering 250°C merupakan parameter pengerasan terbaik untuk aspek Inner Diameter. Temperatur austenit 820°C, media quench oli, dan temperatur tempering 250°C merupakan parameter pengerasan terbaik untuk aspek Gap Width. Temperatur austenit 820°C, media quench oli, dan temperatur tempering 250°C merupakan parameter pengerasan terbaik untuk aspek Flatness.
Analisis Pengendalian Risiko Keselamatan dan Kesehatan Kerja (K3) dengan Metode Failure Mode and Effect Analysis (FMEA) pada PT. ABC
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19405

Abstract

PT. ABC is engaged in metal casting such as drinking water pipe connections and quality drainage components. Existing manufacturing processes involve direct interaction of workers with equipment in production situations that have sufficiently high safety risks. The research aims to identify the type or source of hazard, determine the value of high risk, and appropriate risk control measures. Using the Failure Mode and Effect Analysis (FMEA) method to identify failures from facilities, systems or equipment that have an impact on work accidents. The results of the study found 48 hazards with identifying the risk of work accidents with categories are very low (7), low (48), medium (17), high (10) and there is no risk of work accidents with very high categories. Work accidents that have a high risk in the metal casting process at PT. ABC is at the die-making, smelting and pouring, roughing, and finishing work stations. Potential risks to work safety include dust from mixing, being crushed by solid iron, exposed to sparks, exposed to molten liquids, electrocuted, and exposed to odors from paint. Risk control measures are proposed in the metal casting process at PT. ABC is carried out with engineering control and the use of PPE according to the source of danger.
Performance of Motorcycle Fueled with Pertalite‒LDPE Pyrolytic Oil Blendings Thoharudin, Thoharudin; Santosa, Tito Hadji Agung; Sukmana, Rifky Adji
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.22274

Abstract

Plastic use has expanded substantially, and its waste is primarily disposed of in landfills, which further harm ecosystems owing to inadequate waste management. Pyrolysis, which converts plastic waste into liquid fuel, is one of the potential chemical recycling alternatives for plastic. The purpose of this study is to determine the viability of using pyrolytic oil from an LDPE grocery bag as an alternative fuel for a four-stroke spark ignition motorcycle engine. The LDPE grocery bag was pyrolyzed at 500 oC at a heating rate of 3 oC/min, and the condensed pyrolytic vapor's characteristics were determined. Torque, power, and fuel consumption were investigated using a four-stroke spark ignition motorbike powered by pertalite‒LDPE pyrolytic oil blends. The results reveal that the properties of LDPE pyrolytic oil and pertalite were considerably different; hence, when the blending fuel was applied to the motorcycle, the engine torque and power decreased at low engine speed (2000‒3500 rpm), about equal at medium speed (3500‒5500 rpm), and increased at high engine speed (5500‒8500 rpm). Furthermore, the greater blending fuel greatly reduced fuel usage due to the high viscosity of the LDPE pyrolytic oil.
Multi Aspect Optimization of Milling Machines : Review Firmansyah, Mohamad Ardy; Pranoto, Hadi
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.21088

Abstract

Modern manufacturing supports various aspects of modern life. Modern manufacturing right now is focused on the application of artificial intelligence, acceleration of production, automation production, sustainability and environmental protection. A milling machine is a tool supports in a series of production processes. Its existence supports the production process which is part of the modern manufacturing system. In operating milling machines, several problems that occur, starting from operations, machine capacity, and predictions of machine or tool usage. This study summarizes and reviews previous studies in order to collecting types of milling machine optimization. Multi-aspect optimization obtained includes: optimization with a tool life prediction approach, optimization with a milling process approach, optimization with modification or retrofit, optimization with a production yield approach and finally optimization with operational time. With the results obtained, it is hoped that it can contribute to the optimization of milling machines in the modern manufacturing world. It is hoped that future research will be able to carry out in-depth analysis of each aspect of milling machine optimization has been mentioned.

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