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Jurnal Teknologi dan Rekayasa Alat Berat (JTRAB)
Published by Universitas Gadjah Mada
ISSN : -     EISSN : 30464773     DOI : https://doi.org/10.22146/jtrab.v1i2
Core Subject : Engineering,
Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknologi dan Rekayasa Alat Berat (Journal of Heavy Equipment Technology and Engineering) is a scientific publication journal in the field of management and maintenance of heavy equipments published by the Department of Mechanical Engineering, Vocational College, Gadjah Mada University. Issues are published twice every year. The scope includes predictive maintenance, failure analysis, monitoring systems for heavy equipment, dynamic analysis of heavy equipment, diesel engines, management systems and information on spare parts warehousing, management of heavy equipment use, engineering control of heavy equipment, and others. JTRAB accepts scientific papers in the field of management and maintenance of heavy equipment. Scientific papers can be in the form of Regular articles: high-quality original research reports with conclusions that represent significant advances in this field. Technical note: Short articles are technical in nature and produce useful new additions. Review article: comprehensive, detailed, literature review results on a topic research. The submitted manuscripts to JRTAB must have never been published to any other publishers.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 20 Documents
 1   2 
Integrasi Sistem Hidrolik Vessel Double Cylinder dan Lengan Penyapu pada Electric Road Sweeper Kuncoro, Robertus Tirta Kuncoroadi; Sugiyanto, Sugiyanto; Kurniawan, Stephanus Danny; Ikhsan, Ridha
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 1 (2024): JTRAB Volume 1, No 1, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i1.8604

Abstract

The use of electric road sweeper waste sweeping vehicles can increase effectiveness in waste management. This electric road sweeper research aims to integrate the hydraulic system of the sweeper arm and the double cylinder vessel. The process of designing a hydraulic system diagram uses FluidSIM 4.2 software and carries out mathematical calculations based on collecting data directly in the field. The test results show that when the vessel is unloaded, the movement of the sweep arm hydraulic cylinder when extending is 4.20 m/s and the retract movement is 3.1 m/s, and the movement of the vessel hydraulic cylinder when extending is 11.77 m/s and the movement retract worth 9.4 m/s. When the vessel was given a load of 100 kg, the test results obtained were that the movement of the hydraulic cylinder of the sweep arm during extend was 4.20 m/s and the retract movement was 3.1 m/s, as well as the movement of the vessel's hydraulic cylinder in both extend movements was 12.30 m/s. s and a retract movement of 8.60 m/s. It can be seen based on the results of the tests carried out that the load on the vessel influences the movement speed of the vessel's hydraulic cylinder, this is caused by the influence of gravity.
Perancangan dan Pembuatan Vessel dengan Double Cylinder pada Unit Electric Road Sweeper Ikhsan, Ridha; Sugiyanto, Sugiyanto; Ismail , Andhi Akhmad; Kuncoroadi , Robertus Tirta
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 1 (2024): JTRAB Volume 1, No 1, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i1.8708

Abstract

The electric road sweeper developed by the Mechanical Engineering Department of the Gadjah Mada University Vocational School can handle waste management problems. To improve sweeper performance, several changes are still required in the unit, especially in the sweeper vessel section. In an effort to improve sweeper performance, vessel design is needed. Design and performance analysis of vessels using Autodesk Inventor software. In this research, the addition and replacement of hydraulic cylinder types was carried out to make it a transport vehicle. Apart from that, the use of lighter materials also reduces the weight of the vessel from 650 kg to 278.95 kg. The simulation results show that all vessel sweeper components have a safety factor above one, indicating that they are safe to use. Apart from that, this design is able to withstand loads of up to 4900 N without exceeding the yield strength limit of the material used by the vessel. The maximum inclination of the sweeper vessel is 30.4 degrees. Hydraulic cylinder testing shows an extend speed of 11.77 m/s and a retract speed of 7.9 m/s. Under 100 kg load conditions, the extend speed becomes 12.49 m/s and the retract becomes 8.39 m/s, the retract movement is faster due to gravity.
Analisa Performa Tekanan dan RPM Pada Komponen Swing Hidrolik Pada Alat Peraga Mini Excavator Aji , Angga Prasetio; Bahari, Galuh; Winarto, Felixtianus Eko Wismo; Prihadianto, Braam Delfian
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 1 (2024): JTRAB Volume 1, No 1, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i1.8929

Abstract

A learning method is essential to achieve the existing curriculum standards. For success in the learning process, media or teaching aids are needed to enhance the process and learning outcomes related to students' levels of thinking (Suwardi et al., 2014). The mini excavator trainer serves as one of the solutions to support learning in hydraulic systems. The development of the hydraulic swing component is intended to improve the components of the mini excavator trainer, which will later be developed into a teaching aid for hydraulic drive systems. The ultimate goal of this research is to create a hydraulic swing component to be installed on the mini excavator trainer and, finally, to determine the pressure and RPM performance of the hydraulic swing component. Based on the research conducted, operating the mini excavator trainer requires a radius dimension or distance from the center point to the warning line of 3 m², with a maximum pressure of 150 kgf/cm² producing 11.17 RPM, while the allowable pressure to operate the hydraulic swing component on the mini excavator trainer is 100 kgf/cm², producing 8.54 RPM.
Analisa Patah Housing Flywheel Mesin Diesel Dump Truck Berdasarkan Sifat Fisik dan Mekanik Material Pramono, Yanuwar Ilpan; Krisnaputra, Radhian; Setyana, Lilik Dwi; Hendaryanto, I. Aris
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 1 (2024): JTRAB Volume 1, No 1, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i1.9296

Abstract

This research aims to identify the causes of material failure in the flywheel housing of diesel engines used in dump trucks in corporate sectors such as mining, plantations and infrastructure in Indonesia. Through mechanical testing which includes visual observations, tensile, impact and hardness tests, as well as microstructural observations and chemical composition analysis, this research found that the flywheel housing material has brittle properties. The test results show the highest tensile strength of 23.021 MPa, the average impact value of 0.0417 J/mm2, and the average hardness value of 106.708 VHN. The microstructure of the flywheel housing material is dominated by the Al-Si alloy element, which makes the material tend to be brittle. Several factors that can cause cracks in the flywheel housing include the work environment, material properties, lack of maintenance, and operational errors.
Optimasi Perencanaan Penggantian Pegas Daun pada Truk Hino FM 260 Jd di PT PP Presisi Tbk Proyek Tol Indrapura–Kisaran Praditya, Ardhi Nur Praditya; Winarto, Felixtianus Eko Wismo
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 1 (2024): JTRAB Volume 1, No 1, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i1.9956

Abstract

Leaf springs are an important component of a truck's suspension system, but they can suffer premature failure due to extreme road conditions and inadequate maintenance implementation. This can disrupt construction projects and lead to increased costs. A study was conducted to investigate the factors that cause leaf spring failure on the Hino FM 260 JD unit in the Indrapura–Kisaran toll road construction project, North Sumatra. This study found that the average life of front leaf spring components is shorter than the manufacturer's recommended service life. This was caused by the extreme road conditions in the region, as well as inadequate implementation of maintenance by the project team. Adopting new replacement recommendations will result in reduced component efficiency and increased prices. The findings of this study emphasize the importance of proper maintenance and replacement of leaf springs to prevent disruptions in construction projects. This study also provides insight into the factors that can cause premature leaf spring failure, which can be used to improve the reliability of truck suspension systems. The results of the analysis provide recommendations for planning the replacement of one type of spring with a range of 46,011.62 to 51,959.58 kilometers.
Analisis Resiko Fuel System Terhadap Kasus Low Power Engine Performance pada Unit Asphalt Finisher di PT. PP Presisi Widada, Reza Ananda; Prihadianto, Braam Delfian; Wibowo, Setyawan Bekti; Harjono, Harjono
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.11051

Abstract

The fuel system plays an important role in the BOMAG BF 800 C Asphalt Finisher unit operating in road paving work. The engine performance of the BOMAG BF 800 C Asphalt Finisher unit will decrease if no fuel system is checked immediately. The purpose of this study is to analyze the fuel system that causes low power engine performance in the BOMAG BF 800 C Asphalt Finisher unit. The method used to solve these problems is a qualitative method using Fault Tree Analysis (FTA) analysis and Failure Mode and Effect Analysis (FMEA) as well as quantitative methods by calculating the mean time to failure (MTTF) and mean time to repair (MTTR) in accordance with the track record of using and repairing the BOMAG BF 800 C Asphalt Finisher unit. Based on the results of research that has been done, it is stated that the RPN value of the fuel injector is 324 and the fuel filter is 168. This calculation makes these components the most critical components in the case of low power engine performance. The specified maintenance activity interval on the fuel injector is 84 hours and the fuel filter is 35 hours.
Perancangan Sistem Hidrolik Mesin Press Sampah Plastik Tipe Vertikal Kapasitas 1000 Kg Sanjaya, Antonius David; Sugiyanto, Sugiyanto; Siswantoro, Soeadgihardo; Wibowo, Setyawan Bekti
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.11792

Abstract

Waste is an ongoing environmental issue, escalating with the increasing human population on Earth. Plastic waste, commonly found in Temporary Storage Places (TPS) for waste, poses a significant concern. In the Condongcatur area, one TPS produces waste with a daily volume of 1022 m3, consisting of 52% plastic waste. The percentage of plastic waste can be calculated using the density of PET at 1.35 gr/cm3, resulting in a daily mass of approximately 717 kg. To solve this problem, a vertical hydraulic press machine with a capacity of 1000 kg has been designed. The 1000 kg capacity press machine utilizes a hydraulic cylinder with CHSG (SMC) specifications, featuring a bore diameter of 40 mm, rod diameter of 22 mm, and an 800 mm stroke. The calculated working pressure is 93 bar, necessitating a hydraulic pump with a capacity of 6.62 CC/REV, a hydraulic motor with a power capacity of 1.5 KW or 2 HP, and a full load speed of 1400 rpm. The required hydraulic tank capacity is a minimum of 8 liters, ensuring the smooth operation of the entire system. This press machine effectively compacts plastic waste, saving space, and facilitating the recycling process.
Rancang Bangun Sistem Peringatan Pendeteksi Halangan Gerak Swing Pada Swing Area Berbasis Arduino Uno dengan Sensor Ultrasonik Untuk Excavator Anyuca, Herbudi Bagas; Ismail , Andhi Akhmad
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.11917

Abstract

Occupational health and safety, especially in heavy equipment projects, is very important to avoid work accidents. In the field of construction and mining, work accidents that are often experienced are usually run over, and hit. Most of these accidents are caused by operator or human negligence factors, as well as factors from machines or tools. On the hydraulic excavator there is a swing movement, this movement has the potential to cause work accidents such as hitting an object in the swing area because the object is in blind spots that cannot be measured and seen by the operator. In this study, the authors designed a tool that functions as a warning system and monitoring for detecting swing motion obstacles in the swing area to avoid the accident, while testing the performance of the system that has been created. The design of this tool uses an ultrasonic sensor HC SR-04 which is able to detect an object with ultrasonic waves, LCD 1602 as a monitoring tool for the distance between the sensor and the object that blocks the swing motion, and with the addition of a buzzer as a warning system that will sound at a certain distance. Thus the operator can anticipate if there are objects that block the swing motion. The overall test results of the system that has been created show that the front section obtained a test success rate of 84% with a standard deviation of 0.3116, and the back section obtained a test success rate of 86% with a standard deviation of 0.2916.
Analisis Efektivitas Metode Economic Order Quantity (EOQ) dalam Pengendalian Persediaan Sparepart Service Unit Excavator Sechar Nurul Fadillah; Surojo, Surojo
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.12541

Abstract

Inventory management is a crucial aspect of company operations, particularly in the context of heavy equipment service unit services. This research aims to evaluate the effectiveness of the Economic Order Quantity (EOQ) method in controlling the inventory of spare parts for the XCMG XE490DK excavator service unit at PT Multi Usaha Tambang. With a focus on implementing EOQ on several sample spare parts, such as Oil Engine Gulf Super Duty Vle 15W-40 CL-4, Oil Filter LF9080, Fuel Filter/Water Separator FS19763, and Fuel Filter FS1000, this research found significant results. The research results indicate that the application of the EOQ method at PT. Multi Usaha Tambang is able to determine the optimal order quantity, optimal order frequency, optimal safety stock, and optimal reorder point for each spare part sample. More importantly, the EOQ method has been proven to be significantly more advantageous, with its ability to save inventory costs by up to 92.10%. These findings contribute positively to the operational efficiency and profitability of PT. Multi Usaha Tambang. The implementation of this research highlights the importance of applying the EOQ method in managing spare parts inventory, especially for the XCMG XE490DK excavator unit. This study provides a strong basis to recommend the EOQ method as an effective approach in optimizing inventory control and substantial cost savings.
Analisis Manajemen Inventori Consumable Goods Dotting Gloves dengan Metode Buffer Stock dan Reorder Point Achmad Fikry; Sugiyanto, Sugiyanto; Aisyah, Nyayu; Prihadianto, Braam Delfian
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.13267

Abstract

This research aims to optimize consumable goods inventory control for dotting gloves items in a heavy equipment company. The inventory control process uses mathematical calculation methods, namely additional inventory (buffer stock) and reorder points as well as designing a web-based inventory application system. The research results showed that stock outs occurred repeatedly for dotting gloves. In 2023, the initial inventory of this item will be out of stock for 4 months. The frequency of purchasing dotting gloves is relatively small, only done twice in 5 months. After calculating the buffer stock and reorder point, the company is advised to place a reorder when the stock of dotting gloves reaches 83 pairs or 7 dozen to maintain the continuity of the company's operations. Next, a web-based inventory management application was created to automatically detect reorder points on dotting glove items.

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