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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
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Desain dan Implementasi Sistem Monitoring Level Oli Hidrolik Excavator PC 1250 Berbasis IoT Moch. Shofiyan Zuhri; Nurhadi
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Excavator hydraulic oil shortages and leaks cause engine overheating, low power, shorter component life, and excavator breakdown so that the coal production chain at PT. Kalimantan Prima Persada is disturbed. Meanwhile, oil monitoring is still done manually. The research objective is to design and implement an IoT-based PC 1250 Excavator hydraulic oil level monitoring system that can monitor oil levels automatically and test the system response speed. The research was carried out experimentally to test the comparison of the response speed of two different microcontrollers, namely the ESP 8266 and ESP 32, which use an antenna and without an antenna. The IoT module is installed near the excavator operator to determine the hydraulic oil level. The research results show that the excavator hydraulic oil level monitoring tool is capable of operating with a response speed of < 1 second.
Analisis Laju Korosi, Sifat Mekanik Baja Karbon Medium Terhadap Hasil Perlakuan Surface Treatment. Destri; Septyani, Devi Eka
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.667

Abstract

Metal-based equipment experiences several issues, one of which is corrosion. Corrosion on metals leads to significant losses. One way to inhibit the corrosion process is through metal coating. In this research, chromium is used as the coating material because it is heat-resistant and oxidation-resistant, preventing premature corrosion of the metal. The objective of this research is to study the characteristics of hard chromium plating combined with heat treatment on brake handle materials to inhibit corrosion, resulting in brake handles that are reliable and have good toughness. The research stages included the metal plating process with testing parameters of 0.9A and 1A current and testing time parameters of 30 minutes, 45 minutes, and 60 minutes. The tests conducted were hardness tests, weight loss tests, and microstructure tests using an optical microscope. Based on the research results, the longer the plating time, the greater the thickness and hardness of the coating. Likewise, the greater the current applied, the higher the coating thickness and hardness values.
Perancangan Keyway Slotting Machine Untuk Lebar Alur Pasak 4mm - 10mm dan Kedalaman 1,2mm – 2,4mm Menggunakan Metode TRIZ Sitompul, El Nathan; Heri Widiantoro
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.671

Abstract

Key is a critical component in mechanical applications of transmission systems to transfer power and torque from the shaft to its hub. The precise creation of the internal keyway is crucial to ensure a strong and reliable connection. The lack of suitable equipment for making internal keyways poses a barrier in practical applications. By utilizing a combination of TRIZ approaches and the Pahl & Beitz design methodology, the design process generates innovative concepts to be integrated into the selected design concept. The final design specifications include a maximum clamping capacity of ∅100mm, a minimum inner hub diameter of ∅10mm, groove width ranging from 4mm to 10mm, and groove depth from 1.2mm to 2.4mm in accordance with DIN 6885 standards. Additionally, the implementation of speed control and automatic emergency systems enhances operational safety in abnormal conditions.
Pengaruh Pelepasan Panas Terhadap Prestasi Kerja Mesin Bensin Tri Susilo Wirawan
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.678

Abstract

Gasoline engines are crucial in various human activities, especially in the transportation sector. The aim of this study is to determine the performance of commonly used fuels, namely Pertamax and Pertalite. The results of the research show that Pertamax fuel performs better than Pertalite, as evidenced by the heat and working pressure produced.
Analisis Dampak Pemasangan Zero Point Clamping System Terhadap Efektivitas Mesin CNC Milling 5 Axis Dengan Metode Overall Equipment Effectiveness Antari, Muhammad Aiman; Hendaryanto, Ignatius Aris; Handoko; Winarno, Agustinus
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

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Abstract

The manufacturing industry sector in Indonesia is experiencing rapid development, significantly contributing to the national GDP. CNC milling 5-axis technology, offering high accuracy and efficiency, is increasingly being used across various industries. However, clamping process issues often hinder the optimal performance of these machines. This study analyzes the impact of implementing the Zero Point Clamping System on the effectiveness of CNC milling 5-axis machines using the Overall Equipment Effectiveness (OEE) method. The study results show a significant increase in the Availability value, which rose by 10.7% from 80.3% to 91%, and the Performance Rate, which increased by 2.9% from 93.4% to 96.3%, while the Quality Ratio remained unchanged. This improvement led to the OEE value increasing from 75% to 87.5%, indicating a 12.5% increase in effectiveness. The implementation of the Zero Point Clamping System significantly reduced Setup and Adjustment time from 13.8% to 4.7% and Idling and Minor Stoppage time from 5.9% to 4.4%, as well as reducing Reduced Speed Losses from 5.25% to 3.5%. These results demonstrate that the application of the Zero Point Clamping System can enhance the effectiveness of CNC milling 5-axis machines by reducing downtime and increasing machine speed, resulting in higher availability and improved machine performance. Consequently, this innovation makes a tangible contribution to improving operational efficiency and the competitiveness of Indonesia's manufacturing industry. Keywords: CNC milling 5 axis, Effectiveness, Overall Equipment Effectiveness, Zero Point Clamping System
Pengaruh Variasi Bahan Aditif Pada Base Quench Medium dan Holding Time Tempering Terhadap Sifat Mekanik Material Roda Gigi Alexander David Kurniawan; Udianto, Pondi
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.690

Abstract

Gears are one of the most important components in various machine systems, and in their use, the gears rub and press against each other with other components, so they often experience wear on their surfaces. Therefore, to overcome these problems, the gear material is given a hardening and tempering heat treatment to improve its mechanical properties. The purpose of this study was to determine the effect of variations in cooling media in the quenching process and tempering holding time on the hardness value and impact strength of S45C steel. The method used is S45C steel heated at 950°C for 35 minutes, then cooled using water + 0.12% activated carbon, a 5% NaCl solution, and SAE 15 W 40 oil + 0.12% activated carbon. After that, it was tempered at 260 °C for 15 minutes, 25 minutes, and 35 minutes. Then a hardness test was carried out to determine the hardness value, and an impact test was carried out to determine the toughness value. From the results of the study, it was found that the optimum parameters for overcoming wear problems on gears were using water + 0.12% activated carbon cooling media and a tempering holding time of 15 minutes. From these optimum parameters, it produces a high hardness value of 36.3 HRC and an impact price of 0.23 J/mm².
Analisis Ukuran Celah Katup Terhadap Kinerja Mesin Diesel Maulana, Herlan; Pranoto, Hadi
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.691

Abstract

The size of the cylinder valve clearance gap is one of the parameters that greatly influences the performance of a Diesel engine. Choosing a valve clearance size that can provide the best performance when the engine undergoes regular maintenance is often a problem, especially for Diesel engines that have been in operation for more than 5 years. The standard valve gap size in engine specifications is 0.4 mm. The aim of this research is to analyze valve gap tension which can save fuel consumption in the Diesel engine type 4JA1 2500. This research method involves collecting data by testing variations in valve gap adjustment and variations in engine speed. Experiments on variations in Diesel engine valve tension with valve gap sizes of 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm and 0.6 mm. The test results show that, compared with valve gap sizes of 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm, engine cylinders with a valve gap size of 0.6 mm produce the most optimal performance when used. the lowest specific fuel.
Pengaruh Nickel-Chrome Plating Terhadap Kekerasan Mikro, Kekasaran Permukaan Dan Keausan Pada Hasil Produk Pengecoran Aluminium Bekas (Scrap) Rohi, Jemssy Ronald; Bistolen, Boy; Lopo, Elkana B; Pinto, Gaspar M P; Hanmina, Marsianus M F
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.695

Abstract

In the aluminum casting process, the resulting cast product still has defects that affect the quality of mechanical properties, so it is necessary to perform the final processing by electrolysis with nickel-chromium. The aim of this research is to determine the effect of nickel-chromium coating on the results of used aluminum casting products with electrical voltages of 5, 7.5, 9 volts and times of 5, 10, 15 seconds. From the test results, it is shown that at electrical voltage of 5 and 7.5 volts with time of 5, 10, 15 seconds and at electrical voltage of 9 volts with time of 5 seconds, the hardness value is still in the nickel hardness range, while at electrical voltage of 9 volts with time of 10 and 15 seconds, it is already in the chromium hardness range. When testing the surface roughness, a decrease of 39.36% was observed after 5 seconds, a decrease of 49.70% after 10 seconds and a decrease of 63.90% after 15 seconds. These results show that the roughness level of the nickel-chromium coating is already in the surface roughness range of the finishing or final machining. The highest wear value was at 5 seconds at a voltage of 5 volts, namely 9.86E-07 mm2/kg. The lowest wear value was at 15 seconds at a voltage of 9 volts, namely 2.213E-07 mm2/kg. Therefore, nickel-chromium coating is known to increase the wear resistance of the coated material.
Penggunaan dan Analisis Panel Surya Lepas Pantai Menggunakan Pipa Apung sebagai Media Apung Nanda, Rizki Aulia; Gumelar, Agung; Mulyadi, Dodi
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.720

Abstract

Utilization of solar energy sources is one of the alternative energies to save fossil energy. The use of solar panels has been widely implemented in homes, buildings and open fields. Therefore, the largest energy source is on the beach, because the coastal area has an area without obstructions of sunlight. With this background, this study aims to create an offshore solar panel tool. The method used is to review literature studies, manufacture of offshore solar panels, testing on the beach and data analysis. The test results show that the average power versus time (Wh) produces the lowest value of 9.3679 Wh and a medium value of 23 Wh and the highest value of 26 Wh. The type of battery used is FLA (Flooded Lead Acid) with a voltage of 12V and a capacity of 5 Ah. The influence of the lowest and highest values ​​is the level of sunlight conditions on the beach from sunrise to sunset. Offshore solar panels can float well and receive good light energy sources.
Pengembangan Alat Monitoring Suhu Multisensor Berbasis Mikrokontroler Efendi, Rustam; Tando, Arjal; Padang, Welly; Aries, Mulhin; Herlina, Herlina
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): 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.v19i02.723

Abstract

one Adafruit MCP9808 sensor and five Adafruit MAX31856 thermocouple amplifiers. The design of this data logger allows temperature measurement in various applications, with a focus on monitoring room temperature. The prototype can be used in experiments, research, and industrial applications that require accurate temperature monitoring. This temperature data logger has the potential for wide-ranging applications in various contexts, with advantages in flexibility and affordability. The research validates that the MCP9808 sensor and MAX31856 amplifiers have a high level of accuracy in temperature measurements. The results of temperature measurements in a room environment indicated a temperature of approximately 29 ℃. This data logger design serves as a robust alternative for researchers who face limitations in acquiring standard commercial data loggers. The prototype has the potential to be a valuable tool in experiments and scientific research in various applications that demand precise temperature monitoring.

Page 25 of 30 | Total Record : 291

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