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Turbo : Jurnal Program Studi Teknik Mesin

turbo
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Published by Universitas Muhammadiyah Metro

ISSN : 23016663 EISSN : 2477250X DOI : https://doi.org/10.24127

Core Subject : Engineering,

Mechanical Engineering

TURBO ISSN (print version) 2301-6663 & ISSN (online version) 2477-250X is a peer-reviewed journal that publishes scientific articles from the disciplines of mechanical engineering, which includes the field of study (peer) material, production and manufacturing, construction and energy conversion. Articles published in the journal Mechanical include results of original scientific research (original), and a scientific review article (review). Mechanical journal published by the Department of Mechanical Engineering, Faculty of Engineering, University Muhammadiyah of Metro for publishing two periods a year, in June and December with the number of articles 14-20 per year . Editors receive manuscripts in mechanical engineering from various academics, researchers and industry practitioners.

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 509 Documents

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Pengaruh pembebanan terhadap kecepatan kerja roll conveyor Syafrizal Syafrizal; Adolf Asih Supriyanto
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Roll conveyor is one of goods transportation, especially for moving goods produced from the production location to storage places, mainly carried out in industrial areas and away from moisture. There is a conveyor roll transport that moves use gravity style, namely by making the angle of inclination between the moving source area to the targeted area, yet if the source area with the destination area, namely the storage of goods produced is horizontally flat, then a source is needed a driving source, one of them is using an AC / DC electric motor. Based on the results of testing the conveyor roll by giving a different loading is the no-load condition of a 60 Watt electric motor can be rotated 73.2 rpm until the motor is finally able to deliver products with a load of 738,693 N with 71.4 rpm rotation. This test shows that the decrease in roll rotation occurs in the range of 0.22%, for an increase in the load of 49.05 N (5 kg). The graph results of the connection between loading and roller rotation show that the conveyor roll has a possibility to carry loads with a mass of about 150 kg.Keywords: conveyor roll, transportation, electric motor, rotation, load.

Pengaruh persentase campuran kulit kayu gelam (Melaleuca Cajuputi) dan cangkang karet (Hevea Brasiliensi) terhadap karakteristik pembakaran briket Misbachudin Misbachudin; Raybian Nur
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Development of alternative energy sources that can be one of the potential to produce energy in overcoming the fuel energy crisis. The availability of a lot of rubber trees and gelam bark waste in the area of South Kalimantan so it needs to be used to be processed as raw material for briquettes. In this research using a mixture of rubber shell briquettes and gelam bark waste by varying the weight percentage of the mixture. Tests carried out by burning the briquette on a heating element, to determine the characteristics of combustion in briquettes which include the time of initial ignition, the length of the combustion process, and the change in mass of the briquette to ashes. The results show the length of time of starting the ignition and the length of time the combustion process has decreased with an increasing percentage of gelam bark mixture that is during 13.7 s with a burning time of 5.54 minutes. This is due to fibrous and brittle gelam wood bark so it is flammable and contains volatile matter. High lignin content in the rubber shell leaves more ash than gelam bark which is equal to 5.75 grKeywords : Rubber shell, gelam bark, briquettes, alternative energy, combustion characteristics.

Analisa sistem kerja photovoltaic berdasarkan sudut kemiringan menggunakan monocrystalline dan policrystalline La Rudawin; Nurlaila Rajabiah; Dwi Irawan
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Photovoltaic work systems were analyzed based on its slope angle using monocrystalline and polycrystalline to the power generated. This research is a direct action research (Action Research) namely the design approach stage, tool fabricating phase, and the tool testing phase. The testing phase conduct measurements and analyses, the stages and process of designing tools, and system testing tools that include measurements of light intensity, temperatur, current, and Voltage. The first year observation data in the form of slope measurements of 00, 300, 600, that conducted for 15 days at 08:00-16:00 every hour, data, Voltage, temperatur, and light intensity. The results of this study in the form of the maximum acquisition of light intensity received by the solar panel on the slope angle. Solar radiation intensity carried out a great effect on the power (Pout) of Photovoltaic cell output, wherein the morning solar radiation intensity is greater with the result that it produces greater power. Sunlight intensity in the afternoon and evening tends to decrease so that the power that is halted is smaller. The magnitude of slope angle carried great effect on the output power (Pout) of Photovoltaic cells, where the greatest power at an angle of 0ᵒ obtained namely maximum Pout 17.01 W and maximum Voltage Vm is 19.5 V. While the minimum power Pout is 12 W and minimum Voltage Vm 14 V which obtained at an angle of 60ᵒ. Greatest efficiency (η) of Photovoltaic cells at an angle of 0ᵒ obtained. This is caused by the Voltage and current output of Photovoltaic cells Vm and Im which tend to decrease when the value of the Photovoltaic cell angle is large. Therefore the efficiency of the Photovoltaic cell output will decrease along with the decrease in the Photovoltaic cell output power.Keywords: Photovoltaic, slope angle, power, efficiency.

Penerapan teknik digital prototyping dalam perancangan dan pembuatan model produk berbasis generative design Masy'ari Masy'ari; Edi Karyadi; Rusadi Rusadi
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Digital prototyping is an innovative design method. With digital product prototyping techniques that are designed with the concept of Generative Design and Topology Optimization, the designer able to visualize and simulate the product start from the design, stress analysis to the product manufacturing process. The aim of this research is to optimization the topology of the product model results of generative design, determine the strength of the model through Stress Analysis used topology optimization 50%, 60%, and 70% of the product model results of generative design and figure the results of the product 3D printing in made prototype models as a result of generative design. This research is conducted in 3 steps, that is the preparation of made models with computing Autodesk Inventor Professional 2020, the analysis with generative design, and the printed with 3D printing. This 3D printed product is made in 2 models. Model 1 with a material reduction of 70% topology optimization was better than 50% or 60% material lighting. Model 2, the maximum of 50% Von Mises Stress reduction is smaller than the 60% and 70% reduction.Keywords: Digital prototyping, generative design, topology optimization

Perilaku kekasaran permukaan baja AISI 1045 terhadap kekerasan dan laju korosi serta daya lekat permukaan hasil elektroplating Sunardi Sunardi; Slamet Wiyono; Dhimas Satria; Rina Lusiani; Erny Listijorini; Wira Pratama
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Electroplating is the coating metals with thin layers of other metals by electrolysis to improve the surface properties of materials, especially corrosion resistance. Electroplating is widely used in the automotive, electronics, medical, aerospace, gas, and oil industries. This study will discuss the effect of substrate surface roughness of AISI 1045 steel toward surface roughness, hardness, corrosion rate, and bonding strength of the coating. The surface roughness of the substrate is obtained by grinding process using sandpaper with grades 80, 320, and 1000. In this study, the coating material is Chromium. The electroplating parameters used in this research are 5-volt voltage, current 500 Amperes, and the time of 15 minutes. From this research, it is known that the surface roughness of the substrate material has an influence on the quality of the coating. The lower the surface roughness, improve the roughness, hardness, corrosion rate, and bonding strength.Keywords: electroplating, surface roughness, hardness, corrosion rate, bonding strength.

Pengaruh medan elektromagnetik pada prestasi mesin motor bakar empat langkah dengan bahan bakar gas Achmad Rifqi In'Amullah; Nasrul Ilminnafik
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

The high level of fuel oil consumption in Indonesia caused by increases number of vehicles. Fuel oil consumption has switched into gas fuel as one of the secure alternative fuels and obtained more little gas emissions if compared with fuel oil. LPG (Liquified Petroleum Gas) is one of the alternative fuel was environmentally friendly. This research is purposed for compared performance of four-step engine with premium fuel and LPG fuel with a variety of additional electromagnetic field 600, 800, and 1000 total of copper wire windings. Using LPG fuel can increase torque generated by engine, but the result of engine power to be lower. Based on research data 800 copper wire windings can increase the number of torque and generated power compared to LPG fuel standard. LPG fuel can save fuel consumption compared to premium fuel. The most optimum decrease in fuel consumption is generated by using 1000 copper wire windings. Using LPG fuel can also reduce CO, CO2, and HC emissions levels. The best CO, CO2, and HC emissions levels are obtained from 1000 copper wire windings.Keywords: torque, power, fuel consumption, emissions, and LPG.

Electrical Discharge Machine (EDM): evaluasi nilai kekasaran permukaan benda kerja pengaruh variasi kuat arus listrik dan kekerasan material Eko Budiyanto; Eko Nugroho; YGK Putra
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Electrical Discharge Machine (EDM) is a manufacturing machine that can be used to make workpieces with complicated shapes that cannot be worked on conventional machines. The main process of EDM is to erode the workpiece in the plasma zone that is formed as a result of an electric current that flows and jumps of sparks that occur between the electrodes. Some factors that affect the success of the EDM process include the strong electric current and mechanical properties of the workpiece. The use of EDM in steel material for its processing includes various grades of hardness. This study aims to evaluate the value of the roughness of the workpiece EDM process results that are affected by strong electric current and material hardness. This study uses EDM King Spark ZNC ADM-PM Series and steel material as workpieces. The independent variables used in this study were 3 levels of current use namely 6 Amperes, 9 Amperes & 12 Amperes, and 3 levels of steel hardness namely 28.2 HRC, 31.7 HRC & 37.9 HRC with 18 specimens. Data retrieval is carried out in 3 stages, namely data retrieval of material hardness, retrieval of material composition test data, and retrieval of surface roughness test data. The results showed that the higher the current value and the hardness of the steel used will increase the value of surface roughness. The best surface roughness value of each specimen examined is specimen A with a steel hardness of 31.7 HRC and a current value of 6 Amperes resulting in surface roughness of 3.07 μm; in specimen B with a steel hardness of 28.2 HRC and a current value of 6 Amperes resulting in a surface roughness value of 2.66 μm; and in specimen C with a steel hardness of 37.9 HRC and a current value of 9 Amperes resulting in a surface roughness value of 2.92 μm.Keywords: EDM, electric current, violence, roughness, and steel.

Analisis karakteristik pirolisis limbah plastik low density polyetylene (LDPE) sebagai bahan bakar alternatif Andika Wisnujati; Ferriawan Yudhanto
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Plastic bag waste in Indonesia is very alarming. The many uses of plastic bags and those made from plastic in the food sector, industry, and others will have a bad impact on the environment if it carried out continuously and the utilization of waste plastic bags. This research was conducted by utilizing waste plastic bags Low-Density Polyethylene (LDPE) to be converted into fuel oil by the pyrolysis process. Starting from the design and manufacture of pyrolysis devices, the process of pyrolysis for extracting fuel oil, and laboratory testing of oil density, oil viscosity, and oil calorific value. Pyrolysis was carried out three times with heating temperatures varying at 200°C, 250°C, and 300°C. This research concludes that pyrolysis oil of LDPE plastic bag waste that can be used for alternative fuels in this research can be ignited through a spark at a heating temperature of 250 ° C with a viscosity of 1.95 cP, a calorific value of 10826.388 cal/gr, and an oil density of 0.7044 gr/mlKeywords: plastic, pyrolysis, fuel oil, alternative energy.

Analisa dimensi pori sponge sebagai pelat penyerap terhadap kinerja solar still double slope tipe v Habib Indradaya; Nova R. Ismail; Akhmad Farid
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

There have been many studies for the development of solar distillation to increase its efficiency and economic benefit, component design improvement of the solar still is one of the directions to increase its productivity. To facilitate desalinate-water evaporation a thin stream. Thin stream water flow is needed, which can be obtained by flowing feed water through the pores in a capillary manner. Therefore, research on the effect of sponge pore dimensions on the performance of solar still double slope type V is performed. This research was carried out experimentally to compare the pore dimensions of sponges with the performance of solar still double slope type V. The results of this study indicate that the best solar still double slope type V is using 0.089 mm sponge dimensions, with an obtained capillary flow rate of sponge at 0.0000043 m/s in average efficiency of 37.311 %, and the yield of condensate water per day is 3,447 liters/m2.Keywords: Pore dimension, sponge absorbent plate, solar still.

Optimization of biogas from corn stover using liquid and solid-state anaerobic digestion Lukhi Mulia Shitophyta; Muhammad Hanafi; Yusuf Eko Nugroho
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

The shortage of fossil fuel can be minimized by developing renewable energies such as biogas. The raw material of biogas can be derived from corn stover. Biogas was produced under solid-state anaerobic digestion (SS-AD) and liquid anaerobic digestion (L-AD). The objectives of this study were to compare the biogas yield and analyze the pH value and VS degradation. The results reported that the SS-AD generated a higher biogas yield than L-AD. SS-AD could improve the biogas yield of 71%. Both SS-AD and L-AD had a higher final pH than the initial pH. Moreover, the VS degradation was proportionate to the biogas yield. The highest VS reduction was achieved on SS-AD. Keywords: anaerobic digestion, biogas, liquid state, solid state, volatile solid, renewable energy

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