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All Journal INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Teknik Mesin Indonesia Infotekmesin Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Pengabdian dan Pengembangan Masyarakat Action Research Literate (ARL) Jurnal Teknologi dan Rekayasa Alat Berat (JTRAB)
Felixtianus Eko Wismo Winarto
Diploma Program Of MechanicalEngineering, Vocational College, GadjahMada University
Aerospace Engineering Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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SMALL-HOLE DRILLING USING DIE SINKER ELECTRICAL DISCHARGE MACHINE Firmanto, Hudiyo; Winarto, Felixtianus Eko Wismo
ROTOR Vol 7, No 1 (2014)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.948 KB)

Abstract

Banyak kesulitan dihadapi pada pemesinan lubang kecil. Terutama jika prosesnya dilakukan dengan proses drilling mekanik. Untuk mengatasi kendala yang dihadapi, proses pemesinan non-tradisional seringkali diterapkan. Tulisan ini melaporkan hasil studi pemesinan lubang kecil (diameter kurang dari 1 mm) menggunakan EDM die sinker. Lubang dibuat pada aluminium dengan ketebalan 3 mm. Kawat tembaga berdiameter kurang dari 1 mm dipergunakan sebagai elektroda. Untuk menghindari keausan elektroda yang berlebihan, pemesinan dilakukan dengan menggunakan parameter yang menghasilkan energi rendah. Pemilihan parameter ini juga dimaksudkan untuk mendapatkan kualitas lubang yang baik. Pengamatan dilakukan terhadap kualitas lubang yang dihasilkan. Selain itu studi juga dilakukan pada pengaruh parameter pemesinan terhadap keausan elektroda dan waktu pemesinan. Hasil studi menunjukkan bahwa lubang dengan diameter kurang dari 1 mm berhasil dibuat dengan mesin EDM die sinker. Waktu yang diperlukan untuk pemesinan berkisar antara 5 – 6 menit. Lubang yang dihasilkan memiliki kebulatan yang relative baik dan permukaan yang tajam. Peningkatan energi pemesinan menambah keausan elektroda dan memperpanjang waktu pemesinan.   Keywords: EDM, small hole, drilling, electrode wear
PENGEMBANGAN UNIT PENSUPLAI DAYA BERTENAGA SURYA UNTUK POMPA AIR KELOMPOK TERNAK SAPI DI DAERAH PEDESAAN Rustam Asnawi; Nurhening Yuniarti; Felixtianus Eko Wismo Winarto
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 21, No 2: Agustus 2017
Publisher : LPPM UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.593 KB) | DOI: 10.21831/ino.v21i2.19227

Abstract

In farming, clean water is a basic need to wash food, drink, bathe and clean the cow shed. Provision of clean water is by means of an electric water pump. Meanwhile, electricity prices tend to rise gradually, consequently monthly the electricity bill for farming needs rise. Another thing, the power outage in the countryside sometimes happens in a long duration. The stability of clean water availability at the location of livestock groups is disrupted. One of the best solution approaches to overcome these problems is to create and develop applied products related to renewable energy and energy independence, namely solar power supply unit. This power supply unit uses 2 150WP 12 Volt solar panels, 2 solar charge controllers, 3100Ah batteries and a DC to AC 1500W inverter. The result of the development of this solar powered power supply unit is about 300 Watt. Its main function is to turn on the water pump during the day and in addition it is able to turn on the led light for street lighting at night. Based on the observations, this unit has been operating well and effectively for about 1 month and successfully assisted members of the cow farm groups in the provision of clean water 
SMALL-HOLE DRILLING USING DIE SINKER ELECTRICAL DISCHARGE MACHINE Hudiyo Firmanto; Felixtianus Eko Wismo Winarto
ROTOR Vol 7 No 1 (2014)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.948 KB)

Abstract

Banyak kesulitan dihadapi pada pemesinan lubang kecil. Terutama jika prosesnya dilakukan dengan proses drilling mekanik. Untuk mengatasi kendala yang dihadapi, proses pemesinan non-tradisional seringkali diterapkan. Tulisan ini melaporkan hasil studi pemesinan lubang kecil (diameter kurang dari 1 mm) menggunakan EDM die sinker. Lubang dibuat pada aluminium dengan ketebalan 3 mm. Kawat tembaga berdiameter kurang dari 1 mm dipergunakan sebagai elektroda. Untuk menghindari keausan elektroda yang berlebihan, pemesinan dilakukan dengan menggunakan parameter yang menghasilkan energi rendah. Pemilihan parameter ini juga dimaksudkan untuk mendapatkan kualitas lubang yang baik. Pengamatan dilakukan terhadap kualitas lubang yang dihasilkan. Selain itu studi juga dilakukan pada pengaruh parameter pemesinan terhadap keausan elektroda dan waktu pemesinan. Hasil studi menunjukkan bahwa lubang dengan diameter kurang dari 1 mm berhasil dibuat dengan mesin EDM die sinker. Waktu yang diperlukan untuk pemesinan berkisar antara 5 – 6 menit. Lubang yang dihasilkan memiliki kebulatan yang relative baik dan permukaan yang tajam. Peningkatan energi pemesinan menambah keausan elektroda dan memperpanjang waktu pemesinan.   Keywords: EDM, small hole, drilling, electrode wear
Pelatihan KKM (Kepala Kamar Mesin) Bagi Nelayan di Kecamatan Kragan Kabupaten Rembang Jawa Tengah Eko Wismo Winarto; Harjono Harjono; Lava Himawan
Jurnal Pengabdian dan Pengembangan Masyarakat Vol 1, No 2 (2018): NOV
Publisher : Pengabdian dan Pengembangan Masyarakat Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jp2m.43467

Abstract

The diesel engine lifespan increasing in marine operation will decrease their perfomance.  Some problems will occur, there are hard starting, bad exhaust gas colour and bad power output, suddenly engine stop and hard to start back. There fore any diesel engine training is needed to guard engine perfome. The KKM (Ketua Kamar Mesin= engine room head) training for maintaining their ability to serve diesel engine properly is necesary.   Their ability have came from their friend or autodidact. The 25 fishingman ships were burning at Blora quay last several mounths prove of the lack of their ability. Thre are some rutine maintenances sould be done; every 8 hours Radiator water, diesel fuel and lubricantion oil are controlled, every week (150 hours) air screen cleaning, every two weeks (250 hours) oil lubricant replacement. Every month (500 hours) readjust fuel valve, every 1000 hours oil lubricant replacement and garvernor funtion checking, every 1500 hours inlet manifold cleaning and exhaust sistem, every 3000 fuel tank cleaning and to overhaul also replacement worn out spare parts, every 6000 hours cylinder head take apart and carbonation, and every 12000 hours general over haul and replacement worn out spare part.
Pembuatan dan Analisa Performa Tekanan dan RPM Pada Komponen Swing Hidrolik Di Alat Peraga Mini Excavator Aji, Angga Prasetio; Prayoga, Benidiktus Tulung; Winarto, Felixtianus Eko Wismo; Prihadianto, Braam Delfian; Bahari, Galuh
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 1 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i1.1683

Abstract

The Vocational School Education is a university-level higher education program that places greater emphasis on practical fieldwork relevant to industry needs rather than academic theoretical knowledge. In Indonesia, vocational school programs or diplomas play a crucial role in the development and scientific research. The creation of a mini excavator model is a research and innovation project aimed at supporting students' practical training activities. The development of hydraulic swing components is used to enhance the components of the mini excavator model, which will later be expanded for educational purposes in the hydraulic drive system. The ultimate goal of this research is to manufacture hydraulic swing components that will be installed in the mini excavator model, with the final objective being to determine the pressure and rpm performance of these hydraulic swing components. Based on the conducted research, operating the mini excavator model requires a radius dimension or distance from the center point to the warning line of 3 m², and the maximum pressure for the mini excavator model is 150 kgf/cm², resulting in 11.17 rpm. Meanwhile, the allowable pressure for operating the hydraulic swing components in the mini excavator model is 100 kgf/cm², resulting in 8.54.
Inventory Management and Proactive Maintenance to Enhance Operational Efficiency in Excavators: Focus on Common Spare Parts Issues Surojo; Setiawan, Widia; Harjono; Santosa, Nugroho; Winarto, Felixtianus Eko Wismo; Mandala, Wirawan Widya
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 7 Number 1 (2025)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v7i1.7770

Abstract

Effective inventory management and maintenance are critical for the operational efficiency of heavy equipment such as excavators. This study focuses on optimizing spare parts inventory for Cummins diesel engines using the min-max stock method. It aims to improve inventory control by categorizing spare parts into slow-moving, medium-moving, and fast-moving components and addressing maintenance issues that impact performance. The research utilized the min-max stock method to determine optimal inventory levels, ensuring spare parts availability while minimizing holding costs. Key maintenance issues in components such as track shoes, cam shafts, rear shafts, motor starters, and exhaust manifolds were identified through inspections. Advanced diagnostic tools, including vibration analyzers and thermal imaging, were used for proactive maintenance. The study identified critical wear and damage in components like track shoes, cam shafts, and exhaust manifolds, which could lead to equipment failure if not addressed. Implementing the min-max stock method helped reduce stockouts and overstocking, ensuring an optimal balance in inventory. The results demonstrate that integrating the min-max stock method with systematic maintenance practices significantly improves operational efficiency. The use of real-time diagnostic tools enabled early issue detection, reducing downtime and maintenance costs. This study emphasizes the importance of inventory optimization, regular inspections, and timely maintenance interventions for enhancing equipment reliability. Future research should explore predictive maintenance technologies to further refine inventory and maintenance strategies in the heavy equipment sector.
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.
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 Optimalisasi Perawatan Excavator Untuk Menunjang Produktivitas Unit Luthfi Wifaqi, Ahmad Naufal; Prihadianto, Braam Delfian; Winarto, Felixtianus Eko Wismo; Harjono; Oktavian, Dicky
Infotekmesin Vol 16 No 1 (2025): Infotekmesin: Januari 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i1.2387

Abstract

Maintenance is an important daily activity that aims to ensure equipment or units can operate properly by reducing the risk of damage. One of the heavy equipment units used in mining projects is an excavator, but the high frequency of breakdowns in excavator units requires optimization of the maintenance that has been carried out. This study aims to analyze the performance and effectiveness of hydraulic excavator unit maintenance using the physical availability, mechanical availability, use of availability, mean time between failure, and mean time to repair calculation methods. The calculations show an 8.12% increase in the average PA, MA, and UA values and a 5.16-hour increase in MTBF. Meanwhile, the MTTR calculation results indicate a time reduction of 6.16 hours after optimization. The calculation results after optimization show that the maintenance carried out is effective and efficient to support the unit's productivity
Pengaruh Preventive Maintenance Terhadap Performa Unit Excavator Komatsu PC 200-8 di PT PP Presisi Jobsite Main Hauling Road PT Hengjaya Mineralindo Prihadianto, Braam Delfian; Wiyono, Al Difa Naufal Akmal; Winarto, Felixtianus Eko Wismo; Harjono
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): 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.v20i1.694

Abstract

Excavators are multi-purpose equipment that has various functions. To keep the excavator in top condition even though it’s used continuously, it’s necessary to carry out preventive maintenance on the excavator unit. Preventive maintenance is maintenance carried out on a unit to prevent unexpected damage and to find conditions that could cause damage when using the unit. The reality in the field is that there are many delays in implementing preventive maintenance on excavator. Delays that occur will have an impact on the excavator both in terms of unit condition and unit productivity. This study aims to analyze the effect of preventive maintenance on excavator units in the period February to June 2023 using the Physical Availability, Mechanical Availability, and Effective Utility calculation methods, as the potential lost costs that the company will incur if there is a delay in preventive maintenance on the excavator unit. The analysis results show that units with timely preventive maintenance have a higher average value of 28% for PA, 31.7% for MA, and 24.8% for EU. Delays in preventive maintenance affect the condition of the unit, where the lifetime of a component should be used longer. The estimated losses experienced by the company were estimated at IDR 433,700,000 per unit during the data collection period, from the total units that experienced delays in preventive maintenance.
Co-Authors Aji , Angga Prasetio Aji, Angga Prasetio Bahari, Galuh Benidiktus Tulung Prayoga Budi , Savitri Citra Cahyandari, Safira Ferina, Ferina Harjono Harjono Harjono Hudiyo Firmanto Hudiyo Firmanto, Hudiyo Lava Himawan Luthfi Wifaqi, Ahmad Naufal Mandala, Wirawan Widya Nurhening Yuniarti Oktavian, Dicky Praditya, Ardhi Nur Praditya Prihadianto, Braam Delfian Rustam Asnawi Santosa, Nugroho Setiawan, Widia Surojo Wiyono, Al Difa Naufal Akmal