Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Turbo : Jurnal Program Studi Teknik Mesin

turbo
Website

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

15 16 17 18 19

Analisis terjadinya hentakan dan suara keras pada suspensi belakang unit dump truck HD 785-7 Hendro Purwono; Rasma Rasma; Riki Effendi
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

The suspension system on the machine unit is very important to support the unit weight against the road surface and also protect the transmission from the vertical vibration of the wheels to the body of the unit. When the unit passes a damaged or bumpy road at high speed, shock loads from the road surface will be felt, so the role of the suspension is crucial in protecting components from damage, maintaining operator comfort and undamaged loads. HD 785-7 unit is one type of dump truck that uses cylindrical pneumatic hydro suspension that contains nitrogen and oil gases to absorb loads or vibrations from the road surface. In its operation which functions as a material carrier in the mine area, there are often problems with the suspension especially at the rear because it is holding a heavier load. Therefore, research needs to be carried out aimed at finding the main causes and solutions to these problems using data collection methods, namely: field surveys, interviews, and library research. The results show that damage to the valve core causes the valve to leak and cause the chamber at the top of the cylinder suspension to be occupied by nitrogen gas to be reduced so that the suspension suffers harsh strokes when operated especially on damaged roads. Damage to the valve core is caused by the use of non-standard and too tight tools in its installation. Keywords: hard suspension, valve core, feed valve, nitrogen gas, oil.

Uji ketahanan fatik aluminium hasil remelting piston bekas menggunakan metode pengecoran centrifugal casting Eko Nugroho; Eko Budiyanto; Rubi Kurniawan; Joko Sumosusilo
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Aluminum is one of the non-ferrous metals that are most widely used in the engineering field due to it has mild properties and is resistant to corrosion, but aluminum waste such as used pistons that are damaged or not utilized as an proper resource, on the other hand, that this process is very potential due to it uses a used piston that is not used, and is expected to have a better economic value by doing remelting and centrifugal casting to the used piston. This study aims to determine the value of the fatigue cycle of the used piston which is remelting and printed using the centrifugal casting method by using variations in the pouring temperature and die temperature and rotation variations. Based on the tests conducted using pouring temperature variations and rotation speed are as follows: best cycle value at 250 rpm variation is at pouring temperature 600oC with a value of 76000 N, and the lowest is at room temperature of 750oC with a value of 32000 N, best cycle at a variation of 500 rpm is at a pouring temperature of 700oC with a value of 40000 N, and the lowest is at a room temperature of 660oC with a value of 12000 N. The best cycle value at a variation of 750 rpm is at a pouring temperature of 750oC with a value of 16000 N, and the lowest is at room temperature 660oC with a value of 10000 N. While the results of subsequent tests conducted using variations in die temperature and rotation speed are as follows: the best cycle value at 250 rpm variation is at a print temperature of 350oC with a value of 17400 N, and the lowest is at room temperature of 250oC with a value of 8370 N. The best cycle value at a variation of 500 rpm is at a print temperature of 350oC with a value of 67760 N, and the lowest is at a room temperature of 250oC with a value of 22850 N. The best cycle value at a variation of 750 rpm is at a print temperature of 350oC with a value of 75170oC. and the lowest is at room temperature of 250oC with a value of 28940 N.Keywords: Centrifugal casting, fatigue test, remelting, used piston, aluminum, cycle value.

Perencanaan desain reaktor biodiesel sistem batch untuk produksi biodiesel skala industri kecil Shofiatul Ula; Fadwah Maghfurah; Syarif Abdullah; Aditiyo Hermawan
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v8i2.1049

Recently biodiesel production is produced by large industries. In order to be produced by small industries, the biodiesel production process requires good design which will affect the cost and yield of production. This research aims to make a batch system biodiesel reactor design and find out what materials are used in order to produce small-scale industrial biodiesel. This research is expected to provide small-scale industrial biodiesel production opportunities and the industry able to produce fuel independently. The batch system biodiesel reactor that has been designed production capacity of 144 liters each day. It has the following specifications: consists of 2 volume tubes each of which 38.2 liters with stainless steel material and 2 volume tubes of 38.2 liters each with plastic material HDPE motor power is 260 Kw, shaft diameter 20 mm, pulley length 134 cm using type A, the stirring process uses bevel gear, and the type of gear used is cold dipped steel and S45C steel material. Keywords: design reactor, biodiesel, batch system, small-scale industry

Simulasi numerik kombinasi perpindahan panas konveksi alami dan radiasi pada square cavity Syamsuri Syamsuri; Suheni Suheni; HS Maulana; Muhammad Syafii
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Natural convection is very important in some cases such as glass windows, solar collectors, electronic measuring devices (cooling devices for electronic instruments) and building materials that use insulation. In this research, will be seen the phenomenon of natural convection that occurs in square cavity. The method used for simulation is computational fluid dynamics or CFD. The model used is the 2D cavity model. In this simulation the value of Rayleigh Number (Ra) was varied i.e. 103,104,105 and 106. From this research, it is found that the higher the value of Ra in cavity, the higher the value of the average Nusselt Number (????̅???? ) on the wall which has a high temperature. Ra = 103 so that ????̅???? = 1.17. Ra =104, so that ????̅???? = 2.2. Ra = 105, so that ????̅???? = 4.47. Ra = 106, and then so that ????̅???? = 8.95. Based on the value and contour of the flow the smaller the Ra value in the square cavity, the isothermal line phenomenon that appears will be more vertical. The greater the Ra value in the cavity, the contour of the stream function will change to an ellipse and finally two vortices will appear.Keywords: Numerical simulation, konveksi, radiasi, square cavity.

Rancang bangun mesin press briket dari bahan serbuk kayu sistem pneumatik menggunakan 5 tabung percetak Setiawan, Bambang; Rasma, Rasma
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

At this time the Indonesian people are faced with various kinds of problems in terms of waste, if people have knowledge of the use of waste in the surrounding environment then this problem will be overcome, for example waste originating from coconut shells, wood, sawdust and palm shells that can used as charcoal and biomass fuel. In making briquettes with the dimensions and shape of briquettes that are uniform, then a tool designed with pneumatic technology. Because in pneumatic air pressure can be adjusted as needed. Pneumatic technology is a tool that can work (move) by utilizing air pressure from the compressor. Pneumatic works as movers, regulators, controllers and connect work processes.The advantages of pneumatic work systems are the availability of air that is not limited, easily distributed, flexibility, temperature, safe, clean, transfer of power and speed that is easily set. Based on the results of the design of the briquette maker on the process of making briquettes with a pneumatic system capable of speeding up the production time of briquette production and briquette size of 66 mm diameter and 100 cm height, determining the pressure on making briquettes that are uniform according to the weight and shape of the briquettes. Pressing the pressure of 6 bars produces a planned target product of 5 molding on wood briquette press machine but the results of the sawdust are broken and messy due to lack of adhesive and wood powder must be soft in small particles. Keywords: briquette, pneumatic, and briquette making machine.

Pengaruh prosentase larutan NaOH pada proses alkalisasi serat kulit pohon waru (hibiscus tiliaceus) sebagai reinforcement komposit terhadap kekuatan tarik serat tunggal Arief Rizki Fadhillah; Dadang Hermawan; Arie Restu Wardhani
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

The utilization of natural fiber, nowadays, has employed as reinforcement of composite materials. Natural fiber can benefit the composite material because of the characters of fibre which is more environmental friendly, economics, lighter and stronger. There are many natural fibers that can be used as reinforcement of composite materials such as the bark fibers of Hibiscus Tiliaceus. Hibiscus Tiliaceus is one species of Hibiscus Tiliaceus that can be found in the mountains in Indonesia. This study aims to determine the tensile strength of a single fiber in Hibiscus Tiliaceus fiber with the additional various percentage of NaOH in the alkalization treatment. The alkalization treatment analyzes the alkali process of NaOH substance by 3%, 6%, 9%, 12%, and without treatment within the bark of Hibiscus Tiliaceus tree. The treatment was undertaken by soaking the NaOH substance in a duration of 120 minutes. After the NaOH solution was immersed, the bark fiber of Hibiscus Tiliaceus was washed with aquades until the solution reaches a pH of 7. The results of this study show the percentage of NaOH solution in the alkaline immersion process affects the tensile strength of a single fiber on Hibiscus Tiliaceus and the process of NaOH solution which has a release of 6% lignin, cellulose, and semilulose content. In addition, the NaOH treatment with a percentage of 6% can be the standard of the process of alkalizing the bark fiber of Hibiscus Tiliaceus which can be used for composite reinforcement. Therefore, 6% of NaOH can affect the bond between the Hibiscus Tiliaceus fibers as reinforcement and synthetic resins as a matrix which can increase the strength of the composite.

Analisis sudut panel solar cell terhadap daya output dan efisiensi yang dihasilkan Anoi, Yano Hurung; Yani, Ahmad; W, Yunanri
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v8i2.1051

One of the natural potentials as a source of electrical energy is solar energy. The sun is the main energy source for most of the processes that occur on the surface of the earth. Solar radiation received by the earth's surface is a fundamental input for many aspects, mainly an important parameter in the application of solar cells as electricity generation. Sun cells are devices that can convert sunlight into electrical energy. In this study the data collection of solar cell panel data is collected which includes the solar radiation data, the voltage data generated and the electric current data generated at each variation of the tilt angle 0o, 8o, and 16o. This study aims to discover the effect of changes in the slope angle of solar cell panels on the efficiency of solar power generation systems. The study method used is an experimental development method which is carried out by using the tilt angle variation of the solar panel. The angle used by taking the tilt angle of the solar panel on the negative x-axis which aims to find the maximum tilt angle value. From the test results of 50 Watt Peak (WP) solar power plant installation, it can be concluded that the highest efficiency occurs at an angle of 16o and at 09:00 with a value of 46.076 %, then the second occurs at an angle of 8o and at 09:00 with a value of 45,052 %, then the lowest efficiency occurs at a slope angle of 0o and at 09:00 with a value of 43,986 %. Keywords: Angles, 50 WP panel, solar cell, power output, & efficiency.

Pengaruh jumlah sudu dan diameter nozel terhadap kinerja turbin pelton Mafruddin Mafruddin; Rully Meygi Irawan; Nanang Setiawan; Nurlaila Rajabiah; Dwi Irawan
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v8i2.1076

Pelton turbine is one type of impulse turbine that is commonly used in hydroelectric power plants such as micro hydropower plants. The choice of the turbine is based on the high-efficiency generated by the pelton turbine. The main components of the pelton turbine are blades and nozzles. The purpose of this study was to determine the amount of blade and nozzle diameter on the performance of the pelton turbine. The research method was carried out experimentally by design and manufacture of a pelton turbine prototype. Turbines made and protected have specifications of a runner diameter of 150 mm, blade length of 31,1 mm, blade width of 14,6 mm, blade depth of 6,45 mm and number of nozzles 1 piece. From the results of the study note that the number of blades and diameter of the nozzles affect the power turbine. The highest turbine power is obtained using a number of 21 blades and 8 mm nozzle diameter of 2,15 Watts. Whereas with the number of blades 19 and 8 mm nozzle diameter, turbine power is 1,91 Watt, turbine power with 23 blades and 8 mm nozzle diameter is 1,95 Watts. Turbine power with 19 blades and 10 mm nozzle diameter is 1,4 Watts, turbine power with 21 nozzles and 10 mm nozzle diameter is 1,49 Watts and turbine power with 23 blades and 10 mm nozzle diameter is 1,41 Watts.Keywords: Number of blades, nozzle diameter, pelton turbine performance.

Identifikasi cacat lintasan luar bantalan bola menggunakan Support Vector Machine (SVM) pada fan industri Berli P. Kamiel; Wildan T.B Anggoro; Bambang Riyanta
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Air regulation creates a comfortable and healthy environment for activities in the industry. A fan is a rotary machine that functions to regulate and circulate air in a room or work area. The bearing is an important component of a fan that is potentially damaged during operation. Damage to the bearing will interfere with perform the fan and can even disrupt a whole production process. A bearing condition monitoring method is needed that is effective and easy to use. Conventional methods such as spectrum analysis and sound analysis are not easy to use by operators in the field due to spectrum analysis requires spectrum reading experience while sound analysis is highly dependent on personal experience. This study proposes a vibration-based pattern recognition method that is Support Vector Machine (SVM) to detect damage to a bearing. This method effectively classifies bearing conditions and is easy to use. The study aims to obtain a method of detecting defects in single-row bearing outer paths on industrial fans using SVM. The study uses an industrial fan test rig with two bearing conditions, that is normal conditions (no defects) and external track defects with a depth of 1.4 mm defect and 0.4 mm width. Recording vibration signals using a data acquisition module with a sampling speed of 17066 Hz and a motor rotational speed of 2850 rpm. The SVM classifier is trained using 9 selected statistical parameters which are extracted from 700 sets of vibration signal recordings. The results showed the statistical parameters that were effectively used were Root Mean Square (RMS), Standard Deviation, Kurtosis, Variance, Entropy, Standard Error, Median, Signal-to-Noise and Distortion Ratio (SINAD), and Signal to Noise Ratio (SNR). The most optimal SVM model is obtained by applying combine Median-SINAD statistical parameters, with the same testing accuracy for the RBF, Polynomial and Linear kernels at 100%. Keywords: Bearings, external path defects, kernel, statistical parameters, SVM.

A void fraction of high-viscosity air-water flow in capillary pipes with a slope of 30 degrees to the horizontal positio Sukamta Sukamta; Metra Prayogi Rianda; Sudarja Sudarja
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Two-phase flow is a flow that is composed of several combined substances, namely liquid and gas. Two-phase flow is found in industrial processes, such as in boiler systems, reactors, heat exchangers, geothermal and others. The phenomenon of two-phase flow is also often found in nature, such as fog, snow, clouds, and rain. The purpose of this study was to obtain the characteristics, length, and frequency of flow patterns in two phases based on the experimental value of the fraction in a two-phase flow of a mixture of water-glycerin and air in a capillary tube with a slope of 30˚. The study used a 1.6 mm diameter capillary tube with a working fluid which mixed air and water mixed with glycerin with glycerin concentrations of 40%, 50%, 60%, and 70%. Void fraction values were analyzed using digital image processing methods with the MATLAB R2014a application program. The results showed that the void fraction value was determined by the surface velocity of the liquid and air. The greater the superficial air velocity, the value of the vacuum fraction will develop, while the greater the superficial velocity of the liquid, the vacuum fraction will decrease. The flow pattern of bubbles and plugs is strongly influenced by fluid viscosity. Therefore the higher the viscosity, the velocity of the bubble and plug flow patterns will decrease, conversely if the viscosity of the fluid decreases, the velocity of the bubble and plug flow patterns will increase. The length and flow of the bubble pattern are strongly influenced by homogeneous values (β). If the homogeneous value (β) is higher then the length of the flow pattern will increase. In the stopper flow pattern obtained a high enough frequency, it will produce a high enough void fraction value. Keywords: Two-phase, fluid, void fraction, viscosity, flow pattern.

Page 17 of 51 | Total Record : 509

15 16 17 18 19

Filter by Year

2012 2025

Filter By Issues

All Issue Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin (In Progress) Vol 14, No 1 (2025): TURBO : Jurnal Program Studi Teknik Mesin Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin Vol 13, No 1 (2024): TURBO : Jurnal Program Studi Teknik Mesin Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin Vol 12, No 1 (2023): Jurnal TURBO Vol 11, No 1 (2022): Jurnal TURBO Volume 11 Nomor 1 Juni 2022 Vol 11, No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin Vol 10, No 1 (2021): Jurnal TURBO Juni 2021 Vol 10, No 2 (2021): Jurnal TURBO Vol 9, No 2 (2020): Jurnal Turbo Desember 2020 Vol 9, No 1 (2020): Jurnal TURBO Vol 8, No 2 (2019): Jurnal Turbo Desember 2019 Vol 8, No 1 (2019): Juni 2019 Vol 7, No 2 (2018): Desember 2018 Vol 7, No 1 (2018): Juni 2018 Vol 6, No 2 (2017): Desember 2017 Vol 6, No 1 (2017): Juni 2017 Vol 5, No 2 (2016): Desember 2016 Vol 5, No 1 (2016): Juni 2016 Vol 4, No 2 (2015): Desember 2015 Vol 4, No 1 (2015): Juni 2015 Vol 4, No 1 (2015): Juni 2015 Vol 3, No 2 (2014): Desember 2014 Vol 3, No 1 (2014): Juni 2014 Vol 2, No 2 (2013): Desember 2013 Vol 2, No 2 (2013): Desember 2013 Vol 2, No 1 (2013): Juni 2013 Vol 2, No 1 (2013): Juni 2013 Vol 1, No 2 (2012): Desember 2012 Vol 1, No 1 (2012): Juni 2012 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
turbo@ojs.ummetro.ac.id

Editorial Address
Jl. Ki Hajar Dewantara No. 116 Kota Metro

Location
Kota metro,

Lampung

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official turbo@ojs.ummetro.ac.id

Editorial Address Jl. Ki Hajar Dewantara No. 116 Kota Metro

Location Kota metro, Lampung INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
turbo@ojs.ummetro.ac.id

Editorial Address
Jl. Ki Hajar Dewantara No. 116 Kota Metro

Location
Kota metro,

Lampung

INDONESIA