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Infotekmesin
Published by Politeknik Negeri Cilacap
ISSN : INFOTEKMES     EISSN : 26859858     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
INFOTEKMESIN is a peer-reviewed open-access journal with e-ISSN 2685-9858 and p-ISSN: 2087-1627 published by Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Cilacap. The journal invites scientists and engineers to exchange and disseminate theoretical and practice-oriented in the various topics include, but not limited to Informatics, electrical Engineering, and mechanical Engineering.
Arjuna Subject : -
Articles 669 Documents
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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 Penambahan Methanol Terhadap Performa Mesin Injeksi 150 CC Berbahan Bakar Pertamax fatkhurrozak, faqih; Lukman Sanjaya, Firman; Syarifudin, Syarifudin; Nur Akhmadi, Amin; Budhi Hendrawan, Andre
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.v16i1.2395

Abstract

The use of fossil fuels causes air pollution in Indonesia. Biofuel is one of the alternatives often used, one of which is methanol. Methanol has efficient characteristics and low emissions, increases engine performance and thermal efficiency, and reduces fuel consumption. This study aims to observe the concentration of pertamax - methanol addition of 5%, 10%, and 15% on performance, BSFC, and BTE. The percentage of pertamax and methanol fuel mixing is 5%, 10%, and 15%, and the speed used is 1000, 2000, and 3000 rpm. The measurements taken are power, BSFC, and BTE using a dynotest and displayed on a screen. Adding 5%, 10%, and 15% methanol to pertamax increases engine performance. The addition of Pertamax-methanol PM15 increases power by 25% at a speed of 1000 rpm, reduces BSFC by 40% on PM15 at a speed of 2000 rpm, and increases thermal efficiency on PM5 by 73% at a speed of 2000 rpm
Optimisasi Proses Pengupasan dan Pengirisan Bawang Merah dengan Teknologi Terbaru Zainal Fanani, Nurul; Baihaqi, Imam; Saiful Rizal, Ahmad; Surahman, Abi; Setiawan Aji P, Ugi
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.v16i1.2402

Abstract

Shallots (Allium ascalonicum L.) are essential tuber crops in the food industry, enhancing the aroma and flavour of various dishes. Manual peeling and slicing of shallots are time-consuming and can cause eye irritation. This study aims to develop and test an integrated shallot peeling and slicing machine to improve processing efficiency and reduce discomfort. The machine used in this study has a capacity of 3 kg. Peeling tests were conducted with shallots weighing 1 kg, 2 kg, and 3 kg, recording the time needed for each weight. Slicing tests were conducted with shallots weighing 0,5 kg, 1 kg, 1,5 kg, and 2 kg, measuring the thickness of the slices produced. The results show that the machine takes approximately 6 minutes to peel 1 kg of shallots and 4 minutes for 2 kg and 3 kg, demonstrating 30 times the efficiency of manual peeling. Slicing 0,5 kg of shallots resulted in 0,5 mm thick slices, while for 1 kg and 2 kg, the slice thickness was consistently 0,4 mm. For 1,5 kg, the slice thickness was 0,7 mm, with the machine's slicing performance improving approximately 3 times compared to manual methods. This study concludes that the integrated shallot peeling and slicing machine effectively enhances the efficiency and accuracy of shallot processing, making it viable for implementation in the food industry.
Kendali Kecepatan Motor BLDC dengan metode Mesin Sinkron dan Variasi PWM berbasis IoT Asep Andang; Rahayu, Andri Ulus; Imam Taufiqurrahman; Ervan Paryono
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.v16i1.2417

Abstract

This study investigates speed control of brushless DC (BLDC) motors using a synchronous machine method and Pulse Width Modulation (PWM) variations based on IoT. A three-phase inverter controlled by an STM32 microcontroller was used to drive the BLDC motor. Speed control was implemented by adjusting the inverter frequency based on the synchronous machine principle, while PWM duty cycle was varied to regulate the input voltage. An IoT-based system using a smartphone app allowed remote speed settings. Experimental results showed that the synchronous machine method could effectively control BLDC motor speed, with frequency changes linearly affecting inverter output voltage. Varying PWM duty cycles impacted the voltage required to achieve target speeds, with higher duty cycles requiring lower voltages. The control system achieved speed accuracies within 3% of setpoints across different duty cycles. This approach demonstrates the feasibility of applying synchronous machine principles for BLDC motor control with IoT integration.
Early Warning System Bencana Banjir Menggunakan LoRa Antar Node System Sumardiono, Arif; Zaenurohman, Zaenurohman; Alimudin, Erna
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.v16i1.2448

Abstract

Indonesia adalah salah satu negara yang beriklim tropis. Curah hujan yang tinggi menyebabkan banjir pada sungai yang tidak dapat diprediksi. Bencana banjir yang terjadi nampak tidak ada pencegahan secara efektif serta kurangnya sistem untuk memberikan peringatan sedini mungkin sebelum terjadinya bencana banjir agar kerugian dapat diminimalisir. Pemantauan bencana banjir harus dilakukan di tepi sungai dari hulu ke hilir. Pada lokasi tersebut sering tepi sungai berada di daerah hutan yang kondisi sinyal gsm lemah bahkan tidak ada. Kondisi tersebut menyebabkan sulitnya pengiriman data antar node ews ke penerima. Kesulitan tersebut dapat diatasi dengan menggunakan sebuah modul Lora. Lora mempunyai komunikasi menggunakan gelombang radio 455 Mhz. Gelombang tersebut dapat dipancarkan oleh modul dan dapat diterima oleh modul Lora di Reciver. Sehingga pengiriman data dapat dilakukan tanpa mengadalkan sinyal GSM. Lora juga dapat digunakan untuk pengiriman data menggunakan topologi jaringan seperti star, mesh, dll. Sistem peringatan dini bencana banjir menggunakan Lora didapatkan jarak maksimal komunikasi pada NLOS jarak maksmial komunikasi adalah 520 m dengan nilai RSSI terkecil -128 dan terbesar -147 dBm.
PENERAPAN METODE QUALITY FUNCTION DEPLOYMENT (QFD) DALAM PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR PADA DI INDUSTRI KELAPA SAWIT : PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR Reky Kurnia Widhi, Andreas; Nugroho, Oktavianus Ardhian; Kumbarasari, Shanti
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.v16i1.2452

Abstract

In the oil palm plantation industry, several motorized palm oil harvesting equipment already exist in the palm oil industry market. Several motorized palm harvesting equipment, such as STIHL PC 70 and Tanika TS-5, are on the market. These two machines are rarely used because the tool's price is still high compared to the manual method. One part that makes both tools expensive is the gearbox. In addition, this part is the most often damaged so it requires a long repair time and increases the time to harvest oil palm. This research aims to design a gearbox for oil palm harvesting equipment that is low-cost, lightweight, and tough. The Quality Function Deployment (QFD) method was chosen to prototype the palm oil harvesting gearbox. The results of this research obtained a prototype gearbox that is lightweight and has a tough mechanical system. In addition to its manufacture, which is carried out independently and using local materials, the production cost of the gearbox is low, even when it is still in prototype form.
Pemanfaatan Limbah Plastik PET Sebagai Filamen Printer 3D dengan Metode Pultrusi Wirantara, Rizky; Syamsiro, Mochamad; Mulyanti, Juriah
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.v16i1.2467

Abstract

Polyethylene terephthalate (PET) plastic bottle waste can be recycled into 3D printer filament through pultrusion method. Some previous studies have identified the parameters of PET recycled filament, but have not yet deeply examined the effect of the combination of parameters including the level of roughness. This study aims to evaluate the effects of variations in bed and head temperatures and printing speed on the dimensions of 3D-printed PET filament, to analyze defects, and to assess surface roughness. The results showed that the best products were found at a head temperature of 265°C, a bed temperature of 80°C, and a speed of 35 mm/s. The dominant defects that appeared were under & over-extrusion, weak infill, and layer separation and splitting. Minimal defects were obtained at a head temperature of 265°C and 260°C with a bed temperature of 80°C at a speed of 35 mm/s. The lowest surface roughness results were in class N10, namely Ra = 16.137 µm. This study indicates that optimized parameters produce high quality, making PET a sustainable alternative material.
Rancang Bangun Mesin Pengemasan Pupuk Kompos Limbah Penyulingan Minyak Kayu Putih Berbasis Sistem Kendali PLC Maulana, Ade; Rahmat, Saepul; Prima Dewi, Riyani
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.v16i1.2475

Abstract

Ujungmanik Village has a eucalyptus oil distillery with essential oil products produced of 100 kg per year. The problem is that the waste from the eucalyptus oil distillation, in the form of twigs and leaves from the eucalyptus oil distillation, accumulates and reduces the production area. The purpose of this study was to design a eucalyptus waste compost fertilizer packaging machine with the addition of a load cell sensor. The method used in making this compost fertilizer packaging machine is a PLC control system for the packaging section and ESP8266 is used to control the load cell sensor for weighing during the packaging process. The test results show that the eucalyptus oil distillation waste compost fertilizer packaging machine based on the PLC control system is capable of packaging 1000-gram organic fertilizer by the load cell sensor and is capable of packaging 10 plastic bags. Based on the monitoring results through the Blynk application, the packaging has an average value of 994.1 grams and an error percentage of 2.1%
Analisis Pengujian Statis pada Rangka Kendaraan Listrik Niaga Roda Tiga dengan Metode Elemen Hingga Zain, Alex Taufiqurrohman; Alamussofiyullah, Alamussofiyullah; Suranto, Dwi Djoko
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.v16i1.2487

Abstract

The frame is an important component in the automotive industry. With the development of computer systems, structural frame testing can be carried out by simulation. ANSYS Workbench is a popular program for static testing of frames. This research analyzes the parameters of equivalent stress, total deformation, and safety factors in the ladder frame of three-wheeled electric vehicles. Analyzing these three parameters is expected to provide an overview of the maximum load the frame can receive. The materials used are aluminum alloy and carbon steel, and the vertical load is 215 Kg (2,107 Newton) and 265 Kg (2,597 Newton). The results show that both materials can accept variations in the vertical load given, as seen from these three parameters. In more detail, carbon steel has better quality than aluminum alloy. Carbon steel produces the highest maximum equivalent stress value of 29,175 MPa and 35.96 MPa, and the lowest maximum total deformation values are 0.098137 mm and 0,12096. The minimum safety factor values for carbon steel are 10,06 and 8,1619.
Design and Implementation of a Web-Based Relay Maintenance Information System at the Substation Sartika , Nike; Anugrah Firdaus, Aldi; Mardiati, Rina
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.v16i1.2492

Abstract

Protection relays detect disturbances or abnormal conditions in the electric power system, isolate disturbances, eliminate abnormal conditions, and produce signals or indications. One of the protection relays used in substations is the Over-Current Relay (OCR) and Ground Fault Relay (GFR). Routine maintenance of OCR and GFR is usually done by resetting or replacing the relay. However, the maintenance process was carried out manually using special test equipment, with the results recorded manually in a form, which was then digitized. This procedure is considered less effective. This study develops a web-based relay maintenance application using the waterfall method. This method was chosen because of its structured approach, complete documentation, and cost and processing time stability. The test results show that the web-based system functions according to the expected functionality. This application has been proven to facilitate and increase officers' effectiveness in relay maintenance based on a user survey. This application's OCR and GFR setting results are simulated using the ETAP 19.01 application for a short circuit fault scenario. The simulation results show that the relay works according to the inverse standard characteristics. The relay trip time for a fault on the 150kV side of the transformer is 2.2 seconds, while for a fault on the 20kV side, it is 7 seconds on Circuit Breaker 2 and 26 seconds on Circuit Breaker 1.

Page 30 of 67 | Total Record : 669

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