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Turbo : Jurnal Program Studi Teknik Mesin
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 661 Documents
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Pengaruh variasi ukuran serbuk dan persentase perekat terigu terhadap sifat fisik pellet kayu gelam Andy Nugraha; Herry Irawansyah; Moh Noer Afifudin; Muhammad Muhammad; Rizqi Nor Al’Arisko
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1825

Abstract

South Kalimantan is one of the natural habitats of gelam wood. In South Kalimantan, gelam wood can grow well and fertile. This makes the availability of gelam wood abundant and can be used for various purposes, one of which can be used as raw material for wood pellets (biomass energy). Wood pellets made from gelam wood have not been widely studied, so it is necessary to know the effect of the size of gelam wood powder and the addition of the percentage of adhesive on the physical properties of gelam wood pellets. Wood pellets made from gelam were made using various sizes of powder (mesh) 40, 50, and 60 as well as using flour adhesive (percentage of adhesive 5%, 10%, and 15%). Gelam wood pellets were then tested for physical properties in order to determine their performance. From the research that has been carried out, it is found that the volatile matter content, ash content, and water content tend to increase with the smaller size of the gelam sawdust. Meanwhile, the calorific value and fixed carbon content have a tendency to decrease with the smaller size of the gelam sawdust. volatile matter content, ash content, and water content tend to increase as the percentage of adhesive is increased. Meanwhile, the calorific value and fixed carbon content tend to decrease with the increase in the percentage of the amount of adhesive.
Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa Amnur Akhyan; Hadi Salam
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1882

Abstract

Currently steel pipes are needed, especially in construction work. Construction with pipe materials cannot be separated from the process of joining and cutting. The cutting process for large pipes always uses a thermal cutting process. This study aims to determine how much influence the cutting distance has on the cutting results on a pipe that rotates at a constant 0.8 rpm following the shape of the corner joint contour. To achieve the objectives of this study, a pipe cutting tool with a diameter of 4 to 6 inches is needed with the thermal cutting method using the Oxy Acetylene Cutting (OAC) process This research data was obtained by cutting the 4inch pipe schedule 10s, schedule 20s and schedule 40s in a rotating condition and the cutting torch moves back and forth. The pipe rotates at 0.8 rpm using an AC motor transmitted using a gearbox connected to the wheel as a holder where the pipe rotates. The results of the cutting are in the form of a pipe connection contour with an angle of 900 and 600. As the independent variable in this study was set the cutting distance is 5mm, 7mm and 10 mm, while the fixed variables are determined by cutting speed 280 mm/minute, acetylene gas pressure 3.5 kg/cm2 and oxygen 17.5 kg/cm2. In order to get effective results, preheat the surface of the pipe with a gas fuel mixture until it reaches the melting temperature of the pipe as the main ingredient. The cutting results that meet the entire path of the pipe can be cut completely and through and there is very little splash or melt dirt during the cutting process. After cutting, the best results are obtained at a cutting distance of 5 mm both on schedule 10s, schedule 20s and schedule 40s.
Simulasi unjuk kerja kolektor surya hybrid PV/T berdasarkan jarak susunan pipa absorber berbentuk spiral Ahmad Yonanda; Amrizal Amrizal; Harmen Harmen; Hadi Prayitno
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1906

Abstract

The performance of the solar collector can be reviewed based on several parameters, namely thermal and large fluid drop (pressure drop). This study aims to compare the thermal and pressure drop performance of plate-type solar collectors based on a spiral-shaped pipe arrangement using the distance between the pipes. The comparison of performance analyzed in each study for the distance between the pipes is 25 mm and 50 mm. The approach or stage of research on the performance of the data plate type solar collector is through CFD simulation testing. The simulation stages that will be carried out include: making the geometric design of the solar collector and selecting the mesh method used by the polyhedral type. The results of the solar collector test carried out by CFD simulation show that the use of a 50 mm absorber pipe arrangement has a higher thermal efficiency when compared to the 75 mm absorber pipe arrangement and also a 49.45% increase in pressure drop.
Analisis kinerja variasi jenis dan ketebalan isolator pada dinding ruang mesin pengering kemiri Zaky Abdul Aziz; Mietra Anggara
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1921

Abstract

Candlenut (Aleurites moluccana Willd) has various benefits and has high economic value. Candlenut seeds are widely used by the community as cooking spices, for cosmetic purposes, until the oil is taken for industrial purposes. So far, the process of processing candlenut seeds carried out by candlenut entrepreneurs in Batulanteh District, Batu Dulang Village, Sumbawa Regency is still simple, namely by drying under direct sunlight and using a solar dryer. This causes the drying process of candlenut seeds to take quite a long time. To increase the drying time of candlenut seeds, further research is needed on the development of a candlenut drying machine. This research is a study on the development of a candlenut drying machine by comparing variations in the type and thickness of the insulator on the wall surface of the candlenut drying room. The results of the study with a time of 60 minutes with a temperature of 80°C and a thickness of 6 mm showed that the use of aluminum foil, glasswool, and stryfoam insulators can accelerate the evaporation of hazelnut moisture content with values of 3%, 2%, and 2%, respectively.
Pengaruh komposisi etanol sebagai zat aditif pada Sterculia Foetida Methil Ester terhadap pembakaran difusi Dani Hari Tunggal Prasetiyo; Djoko Wahyudi
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1923

Abstract

The amount of fossil energy reserves, especially fuel oil, which is dwindling, is the main focus for finding alternative energy sources. One of the most popular renewable energies today is biodiesel. Biodiesel can be obtained from free fatty acids from plants. One type of plant that can produce biodiesel as a raw material is kepuh (Sterculia foetida). The kepuh plant produces crude oil through fruit seeds which can be processed into biodiesel. However, biodiesel has a high viscosity value that affects the combustion reaction. Therefore we need an additive, namely ethanol to accelerate the combustion reaction. This study aims to determine the effect of the composition of ethanol in biodiesel on the characteristics of diffusion combustion. The research method used is the combustion diffusion test. The variables used in this study were the composition of biodiesel and ethanol. The composition of ethanol is 0%, 5%, 10%, 20%, 30%. The test results produce data that ethanol has an effect on the rate of diffusion of combustion and flame height. The combustion rate increases with the addition of ethanol and the flame height decreases with the addition of ethanol.
Karakteristik spray diesel dan campuran biodiesel nyamplung pada ruang chamber dengan variasi temperatur ambient Lukman Hakim; Nasrul Ilminnafik; Gaguk Jatisukamto; Moh. Nurkoyim Kustanto; Andi Sanata
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1925

Abstract

Spray characteristics have an important role in improving the quality of combustion in compression engines. This study analyzes the effect of ambient temperature on spray characteristics including spray tip penetration, spray angle and velocity of spray. The research method uses an experimental method with ambient temperature variations of 60oC, 80oC, 100oC controlled using a thermocouple and an ambient pressure of 0.3 MPa. the composition of the fuel uses diesel (diesel 100%), B30 (30% biodiesel), B100 (100% biodiesel). Image recording using camera speed 480 fms. Based on the experimental results, the ambient temperature increases the spray angle and B100 at all ambient temperatures has a spray tip penetration, velocity of spray is lower.
PENGARUH JUMLAH SUDU TERHADAP UNJUK KERJA 3D PRINT TURBIN AIR TIPE VORTEX Alvin Dio Nugroho; Purbo Suwandono; Dadang Hermawan; Arief Rizki Fadhillah
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1935

Abstract

The potential of natural resources in the form of water energy is a renewable natural resource that is often used because it does not damage the environment and can be used continuously. This water flow has two types, namely laminar flow and turbulent flow, the forces generated from these two flows are also different. Turbulent flow tends to produce a greater force and can lift object masses better than laminar flow. Therefore, a vortex turbine has emerged which utilizes turbulent flow as a waterwheel drive, by directing laminar flow towards the cross section and converting it into turbulent flow by utilizing the force of gravity and The cross-sectional shape forms a whirlpool that can move a waterwheel and turn a turbine. The number of blades is very influential on the performance generated from the vortex turbine and affects the resulting output, be it voltage, current, rotational speed, torque and efficiency. In this study, the best results were shown on blades with a total of 6, at a rotational speed of 141.3 rpm; at the voltage shows the result of 0.28 volts; at current it produces 44 mA; at Torque (Nm) 0.22 Nm; and the efficiency is 76.5%.
Pengaruh perlakuan alkali NaOH terhadap kekuatan tarik dan fatik kayu merbau Harnowo Supriadi; Aldy Iwang Ramadhan; Mohammad Badaruddin
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.1938

Abstract

Merbau wood is a type of tropical hardwood class I-II having resistance to humid weather and so that the wood is widely used in many building constructions, such as bearing houses and bridges. In addition, this wood can be used as a raw material for furniture because it has a high durability and resistance against fungi. The tensile test specimen (ASTM D4761) and the fatigue test specimen (ASTM E466) were made by turning and smoothing the surface with sandpaper. Furthermore, alkaline treatment using various concentrations of NaOH solution (5%, 10% and 15%) was applied to merbau wood by immersing all specimens for 2 h and continued with the drying process at 60 °C for 5 h. Tensile and fatigue tests were axially carried out using MTS Landmark 100 kN. The results of the tensile test showed that the tensile strength of merbau wood with 5%NaOH alkali treatment was higher (smax = 202.8 MPa) compared to merbau wood soaked in a solution of 10%NaOH (sult = 149.7 MPa) and 15%NaOH (sult = 129.9 MPa). Likewise, the fatigue life of merbau wood soaked in a 5%NaOH solution is longer than that of merbau wood soaked in a 10% and 15%NaOH solution.
Bamboo slicing machine design to increase skewer production Erwin Yuli Susanto; Mulyadi Mulyadi; Arasy Fahruddin; Iswanto Iswanto
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1944

Abstract

Sate is one of the Indonesian specialties whose demand is increasing, so the need for skewers is also getting higher. For this reason, innovation is needed to be able to meet these needs. Because when using skewers in a traditional/manual production method, the quality of the skewers produced is not good and the production capacity is also low. Meanwhile, the existing skewer making machine still has some drawbacks. So in this study, a bamboo cutting machine was designed to increase the production of skewers with innovations to cover the shortcomings of existing machines. In this study, the skewer making machine was designed to have a slicing section, a shavings section (making skewers), and a sharpening section. The skewers produced have a diameter between 2.5 mm to 3 mm and a length of 210 mm with a production capacity of 3000 skewers per hour.
Analisis getaran lambung kapal patroli 28 meter Amalia Ika Wulandari; Alamsyah Alamsyah; Muhammad Fikri Fadlurrahman
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2006

Abstract

The ship's vibration is something that has a considerable influence on the structural resistance and comfort of the crew. Vibration analysis needs to be done to ensure the durability of the ship's construction. Ship construction that is unable to withstand the vibrations it experiences is at great risk of structural failure. Vibration on the ship is also something that can only be suppressed and cannot be completely eliminated. The objectives to be achieved in this final project are to get the value of the ship's resistance and get the root-mean-square value of the maximum vibration speed that occurs on the ship. The calculation of the value of the ship's resistance is carried out using the Holtrop resistance calculation method, while the determination of the root-mean-square maximum speed of vibration is carried out using the Ansys Workbench. The resistance value obtained on this ship is 7,165 kN. The root-mean-square value of the greatest maximum vibration velocity occurs at a frequency of 47.2 Hz at 76.71906943 m/s. Due to the limit value of r.m.s for aluminum vessels is 15 mm/s, then the value of r.m.s at a frequency of 47.2 Hz that occurs on ships does not meet class standards.

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