cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
UBAIDILLAH
Contact Email
ubaidillah_ft@staff.uns.ac.id
Phone
-
Journal Mail Official
jtmi@bkstm.org
Editorial Address
-
Location
Unknown,
Unknown
INDONESIA
Jurnal Teknik Mesin Indonesia
Published by Badan Kerja Sama Teknik Mesin
ISSN : 1907350X     EISSN : 25977563     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik Mesin Indonesia “JTMI” " adalah jurnal ilmiah sains dan teknologi yang diterbitkan oleh Badan Kerjasama Teknik Mesin Indonesia. JTMI meliputi bidang konversi energi, material, desain mekanikal, manufaktur dan otomasi
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 291 Documents
 18   19   20   21   22 
Performance of solar dish stirling engine for remote area needs Imansyah Ibnu Hakim; Hafizh Bramantya Rizaldi Putra
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.427

Abstract

The need for electricity is the main need of the Indonesian people, and everyone. In 2020, there are 433 villages without electricity in Indonesia. Indonesia has great potential as a source of renewable energy. According to the Ministry of Energy and Mineral Resources, Indonesia's total renewable energy potential is 417.8 gigawatts (GW). The greatest potential comes from the sun at 207.8 GW. One way to utilize the potential of solar energy is to use the Solar Dish Stirling Engine. This research uses an alpha stirling engine and uses air as the working fluid. This initial research of the solar dish Stirling engine aims to determine engine performance with parameters such as engine rotation speed, Stirling engine output power, and Stirling engine output power efficiency. The experiment was carried out using four variations of the piston arm length, namely 5 cm – 5 cm (LH-LC), 5 cm – 4.3 cm (LH-LC), 4.3 cm – 5 cm (LH-LC) and 4.3 cm – 4.3 cm (LH-LC), and used a 500 Watt halogen lamp as a substitute for the solar heat source. From the results of the study, the maximum rpm speed was obtained at 852 rpm with an arm length of 5 cm – 5 cm (LH-LC). The results of the study also showed that optimum engine rotation speed was found in the length of the arm 5 cm – 5 cm (LH-LC) with a value of 0.39 W at 839 rpm. Finally, it is known that the largest stirling engine efficiency is 6.5% at arm length 5 cm – 5 cm (LH-LC).
Pengaruh persentase CO2 terhadap temperatur dan kecepatan api premixed laminar pada oxy-butane combustion Lilis Yuliati; Francisca Gayuh Utami Dewi; Ichtiaraka Amarullah
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.428

Abstract

Oxy-combustion is one of the technologies developed to reduce the amount of CO2 released into the atmosphere in order to reduce the greenhouse effect and global warming. Gas recirculation in oxy-combustion results in the presence of CO2 in the oxidizer. This study was conducted to determine the effect of the percentage of CO2 on the laminar premixed flame speed in the oxy-butane combustion process. Experiment was conducted on equivalent ratios of 0.6, 0.8, 1, 1.2 and 1.4. CO2 content were varied by 50%, 55%, 60%, 65% and 70%, calculated based on the amount of oxygen in the combustion process. The measurement of laminar premixed flame speed was carried out on a cylindrical tube burner. The results showed that the flame temperature and the laminar premixed flame speed decreased with the increasing of CO2 percentage in the oxidizer. The presence of CO2 causes the heat generated from the combustion process absorbed by CO2, so that the flame temperature is reduced. The decreasing in the flame temperature is an important factor which caused the decreasing in laminar premixed flame speed in a mixture with CO2 content. Furthermore, the presence of CO2 in the reactants prevents the butane and oxygen from mixing and reacting, hence the flame speed becomes lower. In addition, it is known that for every percentage of CO2 in the oxidizer, the flame has a maximum flame temperature and speed at an equivalent ratio of unity.
Performance of pico-scale turgo turbine bucket using coconut shells spoons with variations inlet angle and nozzle distance to hydraulic efficiency Muhammad Faridz Athaya; Warjito; Budiarso; Ridho Irwansyah; Muhamad Agil Fadhel; Muhammad Mizan
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.429

Abstract

The United Nations Climate Change Conference of the Parties (COP26) has a main agenda, namely evaluating COP21, where the main target of COP21 is to maintain global temperature changes below 2 degrees Celsius (MoEF, 2021). Indonesia itself is committed to zero carbon emissions by 2060, and the target of a renewable energy mix by 2025 is 23%. Indonesia’s own renewable energy potential is 443 GW [13], but not all renewable energy can be used in some areas that have terrain problems. Picohydro turbines are suitable for choice, because these turbines have a relatively constant supply, can be placed in reservoirs and rivers, and are also not dependent on weather. Among several types of picohydro, the Turgo Turbine is a suitable turbine to choose, because it has cheap construction and maintenance costs, and only requires a low head. This study aims to determine the effect of changes in the inlet angle and nozzle distance on the hydraulic efficiency of turgo turbines with coconut shell blades. Variations in the entry angle are carried out, namely 10°, 20°, 30° and distance variations, namely 100 mm, 150 mm, 200 mm. Based on the results of the study, it can be concluded that the greatest hydraulic efficiency is at a variation in the entry angle of 10° with a nozzle distance of 100 mm, that is, numerically by 49%, and experimentally by 41.8%.
Pengaruh variasi kampuh las tumpul terhadap ketangguhan impak dan kekerasan hasil pengelasan metal inert gas pada aluminium 5083 Yanuar Burhanuddin; Carlos Purba; Tarkono
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.430

Abstract

A poor selection of welding joints is one cause of damage or fractures in welding. Butt joint is one type of welding joint that has many advantages compared to other types. Because during the welding process, the joint area will be completely filled with filler metal. In addition, the manufacturing process of butt welding joint is easy, so it is widely used in the industrial world. In the welding process, the heat input and the cleanliness of the joint surface area must be considered in order not to cause failure of the welding joint. To determine the value of toughness and hardness, the welded specimens were tested using the impact test and hardness test. This research aims to determine the effect of butt welding joint type half V, single V, and double V on the impact toughness and hardness of the aluminium 5083 specimens MIG welding results. The results showed that the highest hardness value was shown by a single V butt joint with a value of 34.0 HRB and the lowest hardness value was shown by a double V butt joint 27.0 HRB. In the impact test, the highest value was shown by a single V butt joint with a value of 0.0756 Joule/ and the lowest impact value was shown by a double V butt joint with a value of 0.0145 Joule/ .
Perancangan sistem transmisi penggerak mesin bubut mini konvensional Muhammad Luqman; Agung Dwi Sapto
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.289

Abstract

Lathe is one of the metal cutting machines with the main motion spinning, where the workpiece is gripped and rotated on its axis, while the cutting tool moves to cut along the workpiece. In the design of conventional mini lathes there are main parts that are fixed heads and drive power units, this lathe can be used for all circles because it uses materials or components that are easy to obtain. In the design of a product is made first the design of the tool and continued by doing calculations on the design of this tool is in the form of a shaft that is also connected to a fixed head, peg, pulley, v belt, bearing, drive motor and engine frame as a mount of the components above. The results of the design of the transmission system driving this lathe indicate that the stress on the transmission shaft is still below the allowable stress, so that the lathe is safe to use.
Efek kecepatan udara dan penambahan serbuk kayu terhadap kadar kelembapan kotoran sapi yang dikeringkan menggunakan mesin pengering tipe drum dryer Harmiansyah; Kardiansyah; Lathifa Putri Afisna; Teuku Meurah Indra Riayatsyah; Rustam Efendi
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.413

Abstract

Indonesia is a tropical country where farmers and ranchers make up the majority of the population. Cows are one form of livestock bred, and the negative impact is air pollution created by cow manure. Drying cow dung with a dryer (drum drayer) is a very effective way to remove the stink that comes from it. The goal of this study was to see how air velocity and powder administration affected moisture content and water evaporation rate when drying cow dung in a drum dryer. This study employed an experimental method, recording temperature changes every 10 minutes for 30 minutes. Moisture levels should be measured and compared before and after heating with different blower speeds (1.3 m/s, 1.7 m/s, 1.9 m/s, and 2.4 m/s). The results revealed that the rate of water evaporation differed depending on the air velocity change. At an air speed of 2.4 m/s, the highest water evaporation rate is 0.000736 kg/s, while the lowest water evaporation rate is 0.000142 kg/s. The comparison of moisture content from the drying process with and without sawdust revealed values that were not significantly different. The ultimate moisture content attained at an air speed of 2.4 m/s is 70%, which is 5% higher than the drying procedure without powder (final moisture value is 75%). However, at a speed of 1.3 m/s, the final moisture content value obtained is 90%, which is higher than the final moisture content value acquired during the drying process without powder (80%).
Pengaruh kekuatan mata pisau mesin pencacah kompos menggunakan metode finite element analysis Aji Abdillah Kharisma; Mahesa Dikta Ajiwiratama
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.432

Abstract

Garbage is solid waste consisting of organic and inorganic substances which are considered unusable and must be managed so as not to endanger the environment, especially to compost waste. Compost is a process of fermentation ultimate product from a pile of garbage or part of plants (straw, grass, banana leaves, sugarcane leaves, etc.). The blade is the essential component in chopping process of the compost chopper. The method analysis of the knife blade design model simulation is conducted to analyze the performance of the knife blade based on the given loading force. Modeling simulation is conducted using software-based applications and will be strengthened by theoretical comparisons. The knife blade material type is SS41, and the axle is S45C.The results obtained from the design modeling analysis using software include the maximum stress (von misses stress) at loading of 2.5 N for every 24 knife blades, the total is 157 MPa, the displacement result is 0.161 mm, and also the safety factor is 3.05, meanwhile the theoretical calculation result of von misses stress is 168 MPa, displacement 0.03 mm, and safety factor is 3.18. Based on the results of value safety factor analysis of knife blade design, it can be continued to the process stage manufacturing.
Pengaruh campuran perekat dan waktu penekanan terhadap karakteristik briket cangkang biji karet Dwi Irawan; Mafruddin; Ardiyanto Darmanto
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.436

Abstract

Biomass is organic material derived from living things that can be converted into fuel through biological and thermochemical processes. The thermochemical conversion of biomass is divided into several direct combustion processes, pyrolysis/carbonization and gasification. Briquettes are produced from pyrolysis by converting biomass into charcoal which is then formed into solid fuel. The aim of the study was to determine the effect of the adhesive mixture and pressing time on the proximation value and burning of briquettes. Raw material for rubber seed shells with variations of molasses adhesive 70% : 30%, 75% : 25%, and 80% : 20%, also variations in pressing time of 30, 45, and 60 minutes using the hot stamping method with a temperature of 120oC and a pressure of 200 bar. The results showed the best calorific value, a mixture of 80% : 20%, pressing time of 60 minutes, namely 5,903.19 cal/g, while the water content, and the ash content is still above the SNI for household briquettes. Combustion time for a mixture of 80% : 20% takes 30 minutes to reach a temperature of 1000C, an average of 35 minutes.
Perbandingan variasi tipe sudu dan tinggi impeller dengan jumlah sudu 9 buah terhadap daya dan efisiensi pada turbin vortex Renhard Januard Sitindaon; Rafil Arizona
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.437

Abstract

The lack of maximum use of alternative energy, especially water energy, so this research will be carried out with water turbines, namely vortex turbines. This turbine utilizes a water vortex to drive the blade and can operate at a relatively low head. This study aims to determine the effect of blade type on the power and efficiency of a more optimal turbine and get the best analysis results on the comparison of straight and curved blade type impellers on the power and efficiency of a 205 mm, 210 mm, and 215 mm high impeller vortex turbine with a total of 9 blades. The method used in this research is literature study, preparation of tools and materials, data collection then data processing and analysis. The results of this study compared to the straight blade impeller, the curved blade impeller gets the highest value of turbine power and efficiency. more details the curved blade impeller with a height of 215 mm and the number of blades of 9 pieces produces the highest turbine performance in this study. The resulting turbine power (Pt) is 46.77 watt and the resulting turbine efficiency (ht) is 13.41%. While in the straight blade type impeller the turbine power and efficiency results are lower than the curved blade type impeller. Especially the 205 mm straight blade impeller with 8 blades has the lowest power and efficiency results.
Proses pembuatan gate hollow dengan menggunakan mesin bor radial Csepel tipe RF 22/B Difqi Faza Umary Difqi; Deddy Supriyatna
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.438

Abstract

The machining process or can be called the manufacturing process is a process of producing raw materials or finished materials that are converted into the desired goods. One of the processes in the manufacturing industry is the drilling process. The purpose of this research is to know the process of using a radial drilling machine in making hollow gates and to find out what errors occur when the process of making hollow gates takes place. This research uses the method of literature study and field research (field research). The results show that based on the entire process of making a hollow gate, an error was obtained in the process of making a hollow gate regarding the diameter of the hole which should have been 15 mm to 18 mm and there was an error between the distances of the holes that had been made.

Page 20 of 30 | Total Record : 291

 18   19   20   21   22 

Filter by Year

2016 2025


Reset
Filter By Issues
All Issue Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia Vol. 19 No. 1 (2024): Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia Vol. 17 No. 1 (2022): Jurnal Teknik Mesin Indonesia Vol 17 No 1 (2022): Jurnal Teknik Mesin Indonesia Vol 16 No 2 (2021): Jurnal Teknik Mesin Indonesia Vol 16 No 1 (2021): Jurnal Teknik Mesin Indonesia Vol 15 No 2 (2020): Jurnal Teknik Mesin Indonesia Vol 15 No 1 (2020): Jurnal Teknik Mesin Indonesia Vol. 15 No. 1 (2020): Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia Vol 14 No 1 (2019): Jurnal Teknik Mesin Indonesia Vol 13 No 2 (2018): Jurnal Teknik Mesin Indonesia Vol. 13 No. 2 (2018): Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia Vol 11 No 1 (2016): Jurnal Teknik Mesin Indonesia More Issue