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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 41 Documents
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Analisis Efektivitas Pemasangan TREPOS Pada Unit Excavator Kelas 20 Ton Sebagai Upaya Preventive Maintenance Komponen Undercarriage Alva Rizki Amanullah; Harjono; Irfan Bahiuddin; Sugiyanto; Muhamad Sandi Isyanto; Arif Khaerudin; Imam Muslih
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 01 (2026): JTRAB Volume 3, No 1, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v3i01.13811

Abstract

The operational pattern of excavator units, particularly travel duration and frequency, is one of the dominant factors contributing to the increased occurrence of undercarriage component breakdowns. Therefore, a system-based operational control mechanism is required to limit excessive travel operations that do not comply with manufacturer standards. This study aims to analyze the effectiveness of installing an additional controller in the form of a Travel Protection System (TREPOS) in a case study of a 20-ton class excavator as a preventive maintenance strategy to improve the reliability of undercarriage components. The research employs an integrated analytical approach comprising Failure Mode and Effect Analysis (FMEA), PDCA, and PICA, along with a comparative analysis of operational data before and after TREPOS implementation. The results indicate that excessive travel duration and intensity are among the dominant factors causing unscheduled breakdowns in the undercarriage system. The implementation of TREPOS effectively controls the unit’s operational pattern by reducing continuous travel time exceeding 20 minutes and suppressing the occurrence of unscheduled breakdowns during the study period. Furthermore, TREPOS implementation has the potential to extend the service life of undercarriage components by up to 48% for carrier rollers, 42% for track rollers, 33% for sprockets, and 86% for track links, which overall contributes to a reduction in maintenance costs.
Perancangan Sistem Swing Pada Alat Peraga Mini Excavator Fikhih Nur Hidayatulloh; Sugiyanto Sugiyanto; Felixtianus Eko Wismo Winarno; Braam Delfian Prihadianto
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 01 (2026): JTRAB Volume 3, No 1, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v3i01.16600

Abstract

Program studi Teknik Pengelolaan dan Perawatan Alat Berat adalah program studi di perguruan tinggi yang fokus pada pengembangan keterampilan teknis untuk mengelola dan merawat alat berat. Program ini biasanya terdiri dari kombinasi kuliah teori, pelatihan praktis, dan magang di lapangan, dan bertujuan untuk mempersiapkan mahasiswa untuk menjadi teknisi yang terampil dan terlatih dalam mengelola dan merawat alat berat. Mahasiswa di program studi ini akan mempelajari dasar-dasar pemeliharaan, dan perbaikan alat berat. Mereka juga akan belajar tentang standar keselamatan dan regulasi yang berkaitan dengan pengoperasian alat berat, serta teknologi terbaru yang digunakan dalam industry pertambangan. Pembuatan komponen mekanisme swing digunakan untuk pembuatan pada alat peraga mini excavator yang nantinya akan dikembangkan untuk alat peraga pembelajaran sistem penggerak hidrolik. Tujuan akhir dari penelitian ini adalah merancang sistem swing dan menganalisis safety factor pada alat peraga mini excavator. Berdasarkan hasil analisis sistem swing pada alat peraga mini excavator dengan dilakukan menggunakan analisis statis, nilai safety factor pada komponen Spi 5,38, shaft motor swing 37,1 house bearing 5,65 lower structure 5,94 dan bracket motor swing 5,16 menunjukan diatas angka satu. Berarti beban yang diterima pada setiap komponen tidak melebihi batas yield strength, sehingga komponen yang telah dirancang dapat menahan beban sebesar 5300 N
Analisis Downtime Engine Motor Grader XCMG GR3005T Pro Menggunakan Metode Reliability Centered Maintenance II (RCM II) Dan Failure Mode And Effect Analysis (FMEA) Muhammad Arkan Adelard Arkan; Nyayu Aisyah; Lilik Dwi Setyana; Andhi Akhmad Ismail
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 01 (2026): JTRAB Volume 3, No 1, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v3i01.22225

Abstract

The evaluation of engine system downtime in the XCMG GR3005T Pro motor grader was conducted using the Reliability-Centered Maintenance II (RCM II) and Failure Mode and Effects Analysis (FMEA) methods. Failure data and maintenance history from February 2023 to November 2024 were utilized to identify failure modes, calculate Risk Priority Number (RPN) values, and formulate appropriate maintenance actions. A total of 63 failure modes were identified across 23 engine components, with the Solenoid Fuel Supply Pump exhibiting the highest RPN value (126). Four major components were classified as critical components, namely the Solenoid Fuel Supply Pump, Oil Pump, Fuel Supply Pump, and Water Pump. The recommended maintenance strategies include Scheduled On-Condition Tasks and Scheduled Discard Tasks, determined based on the RCM II Decision Diagram evaluation. This approach is intended to reduce downtime, enhance engine system reliability performance, and maximize equipment availability.
Electrical Discharge Machining (EDM) untuk Manufaktur Presisi Orifice Nozzle Injector Mesin Diesel: Sistematik Review Kemajuan, Optimalisasi, Dan Keberlanjutan Irwan Sukma; Ghany Heryana
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 01 (2026): JTRAB Volume 3, No 1, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

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

Abstract

Electrical Discharge Machining (EDM) has evolved from a non-conventional machining process into a critical high-precision manufacturing technology for advanced materials. This paper presents a systematic review of recent developments in EDM technology based on an analysis of research articles published between 2019 and 2025. The review focuses on four main areas: (1) process parameter optimization using intelligent methodologies such as swarm intelligence, machine learning, and Response Surface Methodology (RSM); (2) innovations in hybrid processes, including Powder-Mixed EDM (PMEDM), ultrasonic and magnetic field-assisted EDM, and the use of electrolytic-dielectrics to produce defect-free surfaces; (3) developments in electrode materials and the machining of advanced alloys like titanium alloys, Shape Memory Alloys (SMAs), and magnesium alloys; and (4) sustainability trends in EDM through the use of environmentally friendly dielectrics and environmental impact minimization. The synthesis indicates that EDM research is moving towards smarter, more efficient, multifunctional (via surface modification), and sustainable processes. This review concludes by highlighting existing challenges and providing suggestions for future research directions.
Tren dan Keterbaharuan Teknologi Abrasive Water Jet (AWJ) Terhadap Alat Berat di Tambang Batu Bara dan Rekayasa Manufaktur Modern Abdullah Apa; Ghany Heryana
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 01 (2026): JTRAB Volume 3, No 1, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v3i01.26741

Abstract

This review analyzes research trends, technological novelty, and existing research gaps in the application of Abrasive Water Jet (AWJ) technology to heavy equipment in coal mining and related fields of modern manufacturing engineering, based on a systematic synthesis of peer-reviewed scientific literature. The study aims to identify current trends and technological advancements in Abrasive Water Jet (AWJ) applications for heavy machinery in the coal mining sector and modern manufacturing engineering, while examining the impact of innovations such as 5-axis self-aligning nozzles, AI–CFD–DEM integration, and robotic automation on coal extraction efficiency, fabrication precision of heavy equipment components, and operational sustainability. Abrasive Water Jet (AWJ) technology represents a critical technological advancement for heavy equipment in coal mining through high-precision, cold cutting of thick steel and Inconel materials used in drill bits, loader buckets, and conveyor systems. Recent innovations during 2025–2026, including ultra-high operating pressures exceeding 90,000 PSI, 5-axis self-aligning nozzles, and AI-driven nesting algorithms, have been shown to improve cutting accuracy to approximately ±0.001 inch and reduce fabrication-related downtime by 20–30% in mining heavy equipment manufacturing.
Perancangan Sistem Hidrolik pada Mesin Kempa Bambu Laminasi dengan Dua Hydraulic Cylinder Fanny Restu Utama; Ignatius Aris Hendaryanto; Radhian Krisnaputra
Jurnal Teknologi dan Rekayasa Alat Berat Vol 3 No 2 (2026): JTRAB Volume 3, No 2, 2026
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v3i01.20007

Abstract

This study aims to design a hydraulic system for a laminated bamboo press machine utilizing two hydraulic cylinders to address the limitations of manual presses, which often result in uneven pressure distribution, prolonged production cycles, and subpar product quality. The hydraulic system is engineered to deliver uniform pressure, enhance operational efficiency, and improve the overall quality of laminated bamboo. The research methodology encompasses a literature review, field observations, computer-aided design (CAD) modeling, hydraulic simulation software analysis, and performance evaluation simulations. Key system components include a hydraulic gear pump, an electric motor, double-acting hydraulic cylinders, and a monoblock hydraulic valve. Computational and mathematical analyses indicate that the system can generate a working pressure of up to 2 MPa, achieve a pressing cycle under 5 minutes, and sustain a maximum load of 15 metric tons. Specific calculated parameters comprise a gear pump displacement of 14.3 cc/rev, a 3.7 kW electric motor, a 100 mm cylinder bore with a 56 mm rod diameter and a 400 mm stroke length, 3/8-inch hydraulic hoses, and a 12-liter reservoir capacity. This study contributes to the advancement of hydraulic-based technology in the laminated bamboo industry, fostering energy efficiency and operational sustainability in manufacturing processes.
Evaluasi Pemilihan Generator DC pada Sistem PLTA Portabel Skala Mikro untuk Suplai Energi Alat Berat di Daerah Terpencil: Studi Kasus Sungai Sumatera VIII Muhammad Noviansyah Nugraha; Mutiara Putri
Jurnal Teknologi dan Rekayasa Alat Berat Vol 2 No 2 (2025): JTRAB Volume 2, No 2, 2025
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v2i2.23499

Abstract

This study results in the performance of a DC generator in a portable hydroelectric power plant (PLTA) system designed using an Archimedes screw turbine. The main focus lies in the balance between the turbine's power capacity and the generator's ability to generate electrical energy efficiently. Based on the test results, there is a significant alignment between the theoretical power of the turbine (664.2 W) and the actual power produced by the generator (150 W). This evaluation aims to provide recommendations for selecting the right generator for a microhydro power plant system.
Integrasi Sistem Hidrolik Vessel Double Cylinder dan Lengan Penyapu pada Electric Road Sweeper Robertus Tirta Kuncoroadi Kuncoro; Sugiyanto Sugiyanto; Stephanus Danny Kurniawan; Ridha Ikhsan
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 Ridha Ikhsan; Sugiyanto Sugiyanto; Andhi Akhmad Ismail; Robertus Tirta Kuncoroadi
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 Angga Prasetio Aji; Galuh Bahari; Felixtianus Eko Wismo Winarto; Braam Delfian Prihadianto
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.

Page 3 of 5 | Total Record : 41

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