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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 509 Documents
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Karakterisasi pengecoran connecting rod dengan penambahan unsur paduan titanium-boron (Ti-B) Andika Wisnujati; Muhammad Abdus Shomad; Mudjijana Mudjijana
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.v11i2.2170

Abstract

Nowdays, motorcycles become a primary need for people, especially in Indonesia. This has resulted in the increasing number of motorcycle spare parts waste. The waste is in the form of motorcycle components such as wheels, tires, drums, canvas, gear, chains and pistons and many others. Until now, the community has not used this waste, especially the use of used pistons as raw material for casting connecting rods. Connecting rod itself is a motorcycle component made of aluminum. In this study, the authors wanted to analyze the physical and mechanical properties of the casting (imitation) connecting rods made from used pistons with the addition of Titanium Boron (Ti-B) elements. The characterization of the casting results was analyzed by observing the microstructure and Vickers hardness test. The results showed that the physical properties of the foundry material contained 81.6% aluminum and 13.09% silicon, while on microstructure observations with a magnification of 100x, the Al phase and Al-Si alloys were more dominant. In the Vickers hardness test, the hardness result was 79.59 VHN. This is due to the addition of Ti-B elements which can refine grains and reduce porosity in aluminum silicon (Al-Si) alloys for motorcycle connecting rod spare parts.
Pengaruh curing time dan pemanasan cetakan pasir kering terhadap kadar air, kuat tekan, dan lost of ignition (LOI) untuk aplikasi sand casting Apang Shieddique; Dewi Maulidiawati; Moch Iqbal Muttahar; Irwan Suriaman
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.v11i2.2085

Abstract

Sand molding has the advantage of being able to cast metals with high melting points, such as steel and nickel. Sand for the mold media generally uses a lot of silica sand. Some sand molds contain alphaset binders as well as other binders. Alphaset sand molding is a technique for making molds and metal casting cores that use resin as a binder and catalyst between sands. The addition of a catalyst as a mixture of resin. The process of making specimens for the sand mold test using silica sand SiO2 with a weight of 1000 g using 2.1% alphaphenolic resin and 25% catalyst from resin as additional elements for the resin hardening process. with a manual mixing process and making a sample with a diameter of 50mm in the form of a silencer with the tests carried out are water content, lost of ignition compressive strength and sand size distribution. Good moisture content data on alphaset molds are shown in temperature variations with heating. the results of testing the value of increasing compressive strength with variations in heating curing time 30, 60, 90 get results of 20.45, 22.8 and 31.85. data from the lost of ignition test sample curing time 30 get results of 2.05 The results of the distribution of sand are suitable for steel castings with large, medium and small sizes of castings, water content of curing time of 120, get results of more than 1%, namely 1.06 factors causing the mixin process. The above test shows an increase in compressive strength with variations in heating with lost of ignition testing temperature. The more often sand is used as the mold produces a higher LOI value.
Analisa proses pirolysis dengan variasi jumlah tabung pembakaran terhadap Karaktristik hasil bio-oil Kemas Ridhuan; Edi Winarno; Dwi Irawan
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.v11i2.2347

Abstract

Bio-oil is a blackish liquid fuel derived from biomass such as corn cobs, rice husks and other biomass such as cocoa shells. The organic acid content in bio-oil gives bio-oil acidic properties. Bio-oil can be obtained in the pyrolysis combustion process, using a combustion tube. The number of tubes used can affect the yield characteristics of bio-oil. The purpose of this study was to determine the characteristics of bio-oil bio-oil produced by varying the number of combustion tubes in the pyrolysis process. Such as pyrolysis time, amount of bio-oil, temperature and content of bio-oil. This research method utilizes cocoa shell biomass waste to turn into bio-oil with a pyrolysis process, namely by varying the number of combustion tubes, namely one tube, two tubes and three tubes with a diameter of one tube 27.74 cm, two tubes 19.6 cm and three tubes 16 cm with the same cylinder volume of 18.7 cm3, by carrying out the prolysis process, namely putting the cocoa shell waste into the combustion tube and closing it. Then the combustion tube is inserted into the pyrolysis reactor and then closed and then burned. From the results of the research, the results of bio-oil in a single tube of raw material were 130 ml with a processing time of 113 minutes and bio-oil characteristics, a calorific value of 2177,464 cal/g, a viscosity of 1,574 CPs, and a pH of 4.77. Whereas in the second raw material tube, there were 80 ml with a processing time of 105 minutes and specifications for bio-oil, a calorific value of 2071,151 cal/g, a viscosity of 1,780 CPs and a pH of 4.96. While the three raw material tubes were 50 ml with a processing time of 100 minutes, and bio-oil specifications, calorific value 1983,950 cal/g, viscosity 2,626 CPs and pH 5.42.
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.
The effect of blade density variation to cocopeat mass that produce by Poltesa cocopeat machine Pande Putu Agus Santoso; Iklas Sanubary; Diah Mahmuda
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.v11i2.2186

Abstract

Cocopeat machines that have been developed today, were carried out with variations in the speed of rotation, blade length, blade shape, and treatment of objects (coconut coir immersion). There has been no development of a cocopeat machine that focuses on variations of blade density. It is suspected that the blade density affects to the difference of cocopeat mass produced. This study was a true experiment. The dependent variable was cocopeat mass. The independent variables were blade density, consisting of σ1 (84/210π), σ2 (42/210π) and σ3 (21/210π). For each variation of the independent variable was conducted 10 experiments. The study sample was 30 pieces of coconut coir. The mass of each coconut coir was 50 grams. The engine's spin speed, length and blade shape, are the same for all samples. The data was analyzed using the t test at a significance level of 5%. The average mass values of cocopeat were σ1 (  = 16.5430; S1 = 1.9674), σ2 (  = 12.2650; S2 = 1.8341) and σ3 (μ3 = 10.0988; SD = 1.8943). The t test showed that the difference in the average value of cocopeat mass between groups were to12 = 5,030; to23 = 2,598; and to13 = 7,462. If t-table value for ν = 18 was 2,101, so . Ho was rejected and H1 accepted, so there was a difference of cocopeate mass that produced by poltesa cocopeat machine, which is effected by variations of blade density.
Pengaruh variasi laju aliran dan preheating cetakan pada investment casting terhadap sifat fisis dan mekanis prototipe aluminium cylinder head engine Masy'ari Masy'ari; Ari Dwi Prasetiyo; Edi Karyadi; Iyus Iyus
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.v11i2.2098

Abstract

This research studies the effect of flow rate on the pouring of molten metal into the mould so that the flow rate into the mould can be controlled. Furthermore, this research studies the effect of mould preheating so that the temperature inside the cavity can be maintained, especially for narrow holes. The process starts with making the engine cylinder head pattern and gating system using a three-dimensional printer with polylactic acid resin. The mould pattern and gating system are combined and coated with a layer of cement plaster, silica sand and kaolin. After the coating is dry, the mould is heated until the mould pattern evaporates and there is no residue. The casting process was carried out at pre-heating moulds of 300 0C and 350 0C and a pouring temperature of 800 0C with pouring speeds of 20, 30, and 40 rpm. The final stage of the research is manufacturing test objects and testing mechanical properties. The results showed that the higher the pouring speed, the less perfect the casting results, especially in the cylinder head fins. The best casting results occurred in the pre-heat condition of the 300 0C mould with a pouring speed of 20 rpm, with a Maximum Tensile Strength of 105 N/mm2, Hardness 53 hardness Brinell test (HBN), Density and Porosity of 2.43 gr/cm3. The material used in this study refers to the reference is A356 Aluminum Alloy.
Analisis DSSC menggunakan mulberry powder dan buah naga sebagai fotosensitizer Nurlaila Rajabiah; Dwi Irawan
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.v11i2.2348

Abstract

Fabrication prototype of DSSC (Dye-Sensitized Solar Cell) using mulberry powder from mulberry leaf extract (Morus Alba L.) and dragon fruit (Hylocereus Polyrhizus) as photosensitizers has been carried out. The test was carried out by testing the I-V characteristics at a light distance of 10, 20 and 30 cm from the material sample. The test results show that the chlorophyll of mulberry and dragon fruit is capable of producing an electric current which is a characteristic of the resistance of organic materials. In DSSC with mulberry powder dye, the greatest power was found at a halogen lamp distance of 10 cm with a power of 257.77 mW. Whereas in DSSC with red dragon fruit flesh dye, the greatest power was obtained at 162.35 mW with the halogen lamp distance from the DSSC device being 10 cm. DSSC testing using mulberry powder and dragon fruit showed that the power produced on mulberry powder leaves was higher than dragon fruit. The results of the I-V characteristic test on the DSSC device show a linear graph.
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.
Pengaruh rasio ekuivalen dan komposisi bahan bakar terhadap karakteristik api dengan menggunakan bahan bakar biodiesel kesambi Dani Hari Tunggal Prasetiyo; Djoko Wahyudi
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.v11i2.2247

Abstract

The continuous use of fossil energy will cause fossil energy reserves to be depleted. In the transportation and industrial sectors, the use of fossil energy is the main energy source. This is because the fuel used in transportation and industry still relies on fossil fuels. To overcome the energy crisis in the future due to the exploitation of fossil energy, it is necessary to use alternative energy. One alternative energy that can be used is biodiesel. Biodiesel can be obtained from animal or vegetable fats. Kesambi is a plant that has the potential as a biodiesel feedstock. The kesambi plant can produce oil obtained from the seeds of the kesambi fruit through the pressing process. However, before being used and mass produced, a product testing process is required first. Tests can be carried out using the premix combustion method by varying the equivalent ratio and fuel composition. The fuel used is kesambi biodiesel with the addition of methanol. Testing produces fire characteristics. Flame characteristics yielded data on the relationship between laminer combustion rate and equivalent ratio as well as flame height and fuel composition. The test results show that the highest laminer combustion rate lies in the equivalent ratio 1 of 68,024 cm/s with a fuel composition of B90M10. Then the highest flame height at the equivalent ratio of 1.2 is 25,663 mm with a fuel composition of B100M0.
Audit energi sistem tata cahaya dan tata udara lantai 2 & 3 pada bangunan gedung toko buku di Pekanbaru Awaludin Martin; Dhiky Rahman Agusta; Nehemia Simangunsong
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.v11i2.2133

Abstract

Energy audit is a technique used to analyze the amount of energy consumption in buildings and identify ways or methods to save it. Based on the Minister of Human Resources Regulation No. 13 of 2012 stated rules regarding energy management and energy saving standards. Shopping buildings are one of the sectors that use electrical energy to operate. A bookstore in Pekanbaru which consists of three floors also uses electrical energy for lighting and air conditioning systems. The use of electricity for lighting and air conditioning for a month is 37985.5 kWh and then ECO is carried out so that the use of electrical energy can be reduced to 30,138 kWh in each month. The use of electrical energy can be expressed in Energy Consumption Intensity (IKE), before the ECO IKE was carried out for the 2nd and 3rd floors of the bookstore building in Pekanbaru was 28.59 and after energy saving opportunities, the Energy Consumption Index became 23.09.

Page 29 of 51 | Total Record : 509

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