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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 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.
Investigasi tegangan kerja pada pisau pencacah di mesin shredder-extruder dalam satu penggerak utama menggunakan Metode Elemen Hingga Adriyan Adriyan; Sufiyanto Sufiyanto; Marfizal Marfizal
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2269

Abstract

Plastic flakes from shredding processes are produced by tearing plastic wastes using shredder blades. During the shredding process, tear forces are the source of loading acting on the tip of the shredder blades. Hence, this research is performed to investigate the working stresses on the blades when subjected to the tear forces during the shredding process. Thus, the working stresses on those blades can be computed by applying the finite element method. In this research, the blades are modeled by two kinds of finite elements, namely the triangular plane stress element and tetrahedron element, with linear shape functions. As a result, the maximum stresses on the blades lie within the range of 49 to 52 MPa for both models. These maximum working stress are below the yield strength of the material used for manufacturing those blades, i.e.: ASTM A36 with 250 MPa of yield strength. Overall, it can be concluded that there are no significant discrepancies in the computed working stresses among the blades.
Laju perambatan retak fatik dan sifat mekanik pada pengelasan friction stir welding (FSW) aluminium AA2024-T3 dengan perlakuan transient thermal tensioning (TTT) Pujono Pujono; Dian Prabowo; Ipung Kurniawan; Joko Setia Pribadi; Muhamad Yusuf
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.v11i2.2270

Abstract

One type of engineering material that is often used in transportation construction, especially for aircraft, automotive, ships, and other industries is aluminum alloy. Aluminum alloys have excellent mechanical properties, including corrosion resistance, lightweight, and good formability. However, in addition to these good properties, aluminum also has a weakness, namely the appearance of porosity and cracks when connected using arc welding (TIG, MIG). Friction stir welding (FSW) is an appropriate welding method for aluminum alloys to overcome these weaknesses, but the next problem will arise, namely related to distortion, decreased mechanical properties, and residual stress. For this reason, additional treatment is needed in order to improve the mechanical properties of the FSW welding results. The research method to be carried out is to carry out the FSW welding process on 2024 T3 aluminum alloys by adding moving local heat or transient thermal tensioning (TTT) using a heater placed in front of the tool and a heating temperature of 200°C. Some of the characterizations that will be carried out are microstructure tests, tensile tests, and fatigue tests. The results showed that the highest tensile strength value was obtained in the 1500 specimen, which was 312.2 MPa. The microstructure in the nugget zone (NZ) is fine-grain equiaxed. The lowest fatigue crack propagation rate at ΔK values of less than 7 MPa.m0.5 occurred in the 1100 specimen, while in other specimens the fatigue crack propagation rate was higher.
Mechanical properties investigation of the potential extruded MgAZ31B as a bone implant Fauzi Ibrahim; Anang Ansyori; Adi Prastyo; Lukito Dwi Yuono
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.v11i2.2279

Abstract

Mg is a light metal that has superior properties, including low density, good ductility, medium strength, and good corrosion resistance, mg can also be combined to obtain better properties. Interest in the application of MgAZ31B for bone replacement has now become a major topic and continues to be intensified to improve results that are more compatible with bone constituents found in humans. In the human body, there are approximately 206 bones in an adult. Calcium, magnesium, and phosphorus are the main elements in the formation of human bones but there are many other elements in their formation, the real bone matrix is made of protein, collagen, calcium phosphate, calcium carbonate, magnesium salts, and other minerals. When viewed from the element of bone magnesium is an important part of bone formation and certainly not harmful to the main elements of human bones. However, before being used as bone implants, magnesium must pass the mechanical and clinical test stages.
Rancangan dan penerapan teknologi boiler vertikal fire tube untuk perebusan bubur kedelai tahu Kalisari Banyumas Sakuri Sakuri; Hartono Hartono; Nana Supriyana; Yusmedi Nurfaizal; Reza Azizul Nasa Al Hakim
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2284

Abstract

The purpose of the study was to design and application a fire tube boiler for boiling soybean slurry in the process of making tofu with a capacity of 120 kg/day Parameters were measured to compare the boiling process of wood fuel and wood pellet boilers, the efficiency of fuel use, the improvement of tofu quality based on physical and chemical observations, and the use of water for production activities.. The boiler tube is made of steel plate with a thickness of 5 mm. 2 inch diameter sch 80 fire pipe totaling 20 rods. The boiler body is 600 mm in diameter with a height of 1600 mm. The tube sheet uses a plate thickness of 8 mm and the distance between the fire pipes 100 mm. The design uses ASME Section IV of 2004. The boiler manufacturing process uses a welding system. The test results show that the boiler was able to boil 120 kg/hour soybeans because it uses an automatic and sustainable system. The boiler is safe to use because it is equipped with a manometer and pressure control valve so that the boiler works at a safe limit below 2 bar. Boiling with a boiler produces more efficient fuel. The boiling time is faster, the quality of tofu was better chemically and physically, and the use of water in the production of tofu is more efficient.
Akibat peningkatan tekanan gesek terhadap kekuatan tarik sambungan pada proses pengelasan gesek continuous drive AA6061- baja karbon sedang Jack Carol Adolf Pah; Defmit B. N. Riwu; Erich U.K. Maliwemu; Adi Yermia Tobe; Wenseslaus Bunganaen; Daud P. Mangesa
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2296

Abstract

The objective of this research was to get the effect of friction pressure on the tensile strength of the joining of aluminum alloy AA6061 and carbon steel, with continuous drive friction welding process. Variations of friction pressure of this research were 24 MPa, 32 MPa, and 40 MPa. In this study, a friction time 9 seconds was used. Other friction welding variables were, forging pressure 79 MPa, forging time 60 seconds, and friction rotation speed 1600 rpm. The independent variable was the ultimate tensile strength of the welded joint. The results showed that the increase in the tensile strength of the joint was not linear with the increase of frictional pressure. The rate of the increase in the tensile strength of the connection, will decrease after the frictional pressure passes through 32 MPa. When the rate of increase in the tensile strength of the joint begins to decrease, the joint will become more brittle. The maximum tensile strength of the joint in this study was 167.421 MPa at a frictional pressure of 40 MPa.Rasakan keseruan bermain di om88 dengan peluang menang yang lebih besar. Nikmati pengalaman bermain yang seru, aman, dan penuh tantangan. Segera coba dan raih kemenangan besarmu!
Analisis panjang bidang kontak perontokan lada pada mesin perontok lada tipe silinder berjaring Leo Dedy Anjiu; Suhendra Suhendra; Ari Rianto
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2310

Abstract

The threshing process is one of the problems because currently is still mostly done manually. The development of a mechanical pepper threshing system has been carried out by making a pepper threshing machine. Further development is carried out by analyzing the mechanism of pepper threshing. Based on these problems, a research was conducted to analyze the length of the threshing contact area on the pepper threshing mechanism. The independent variable of the research is the length of the threshing contact area. The dependent variables were threshing capacity, threshing efficiency and damage percentage of pepper. The length of the threshing contact area was varied namely 2, 4, 6 and 8 cm. The threshing mechanism rotational speed used is 360 rpm. The tensile strength of the spring on the threshing net is 0,22 kg/cm. The amount of pepper processed in 1 test is 0,4 kg. Based on the test result, the length of the threshing contact area is inversely proportional to the threshing capacity, and directly proportional to the treshing efficiency and the percentage of damage. The highest capacity and the smallest damage percentage were obtained at a contact area length of 2 cm, respectively 109,09 kg/hour and 10,85%. The highest threshing efficiency was obtained at a contact area length of 8 cm is 95,09%.
Pengaruh laju aliran udara dan lubang uap air terhadap kinerja kompor dengan bahan bakar oli bekas Mafruddin Mafruddin; Kemas Ridhuan; Eko Budiyanto; Kurniawan Kurniawan; Muhammad Atiq Mubarak; Neta Bagus Pratama
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.v11i2.2336

Abstract

Oil waste produced from motor vehicle lubricants can pollute the environment. One alternative that can be done to prevent environmental pollution is by utilizing waste oil as fuel. Several factors can affect the temperature and quality of combustion, namely the air flow rate and the addition of water vapor in the combustion process. The purpose of this study was to determine the effect of the air flow rate and the number of steam holes on the temperature and efficiency of the stove with used oil fuel. The research method used was experimental by making and testing stoves with waste oil as fuel and adding water vapor to maximize combustion results. Variations in the air flow rate are 9 m/s, 10 m/s, and 11 m/s and variations in the number of water vapor holes are 8, 9 and 10 pieces. From the research results, it was found that the air flow rate and the number of holes had an effect on the flame, temperature and quality of combustion. The highest temperature is 605.6℃ and the highest stove efficiency is 10.91% obtained with an air flow rate of 10 m/s and 10 steam holes.
Analisa variasi temperatur terhadap nilai kekerasan aluminium pada proses squeeze casting Tri Cahyo Wahyudi; Asroni Asroni
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.v11i2.2338

Abstract

Aluminum is a non-ferrous metal and has the advantages of light specific gravity, corrosion resistance. Aluminum can also be used in the manufacture of pistons, engine blocks, wheels, drums. Squezze casting is a casting process, where molten metal is poured and pressure is applied until the solidification process is complete. Using hydraulic pressure, this technique is able to improve the physical and mechanical properties, especially on aluminum base material. The research method uses the Squeeze Casting process with temperature variations of 300ºC, 400ºC, 500ºC, the pressure is 60 seconds,the pressure is 5 tons. Pressing time for 75 seconds and Vickers hardness test. The results of the highest hardness value are in specimens with a temperature of 500ºC, namely with a value of 60.2 HVN, and for the lowest hardness value are found in specimens with a temperature of 300ºC with a value of 48.9 HVN. As well as the results of the hardness test another is at a temperature of 400ºC to get a hardness value of 51.1 HVN. Based on the hardness test that has been carried out the most optimal hardness value is on a specimen with a temperature of 500ºC.
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.

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