cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Muhammad Ruswandi Djalal
Contact Email
wandi@poliupg.ac.id
Phone
+6285250986419
Journal Mail Official
sinergi@poliupg.ac.id
Editorial Address
Jalan Perintis Kemerdekaan KM.10 Tamalanrea, Makassar 90245
Location
Kota makassar,
Sulawesi selatan
INDONESIA
Jurnal Teknik Mesin Sinergi
Published by Politeknik Negeri Ujung Pandang
ISSN : 16931548     EISSN : 26849372     DOI : http://dx.doi.org/10.31963/sinergi
Core Subject : Science, Engineering,
Energy Mechanical Engineering
Jurnal Teknik Mesin Sinergi Politeknik Negeri Ujung Pandang mempublikasikan hasil penelitian pada Bidang Teknik Mesin dan Energi.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 456 Documents
 42   43   44   45   46 
Optimasi Sifat Kekerasan dan Struktur Mikro Paduan Aluminium Silikon A383 dengan Variasi Perlakuan Panas Paipinan, Paipinan Batara Randa; Ahmad Zubair Sultan; Muhammad Arsyad Suyuti
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5823

Abstract

The purpose of this study was to determine the effect of heat treatment on the hardness and microstructure of A383 aluminum alloy. The research method includes materials, tools, and experimental procedures carried out during the study. The tested material was A383 aluminum alloy in the form of a cylindrical block, which was machined into test specimens with dimensions of 10 × 10 × 10 mm. The heat treatment process was conducted in two stages. In the first stage, the specimens were subjected to solution heat treatment at a temperature of 550 °C with a holding time of 2 hours followed by quenching in water media. In the second stage, the specimens were subjected to artificial aging at temperatures of 150 °C, 200 °C, and 250 °C with holding times of 4, 5, and 6 hours. The tests carried out included chemical composition testing, Brinell hardness testing, and microstructure observation. The results show that the hardness of A383 aluminum alloy can be improved through a sequence of solution heat treatment, quenching, and artificial aging processes. The maximum hardness value of 112.86 HB was obtained at an aging temperature of 200 °C with a holding time of 4 hours. Microstructure observations indicate that the peak aging condition produces a finer and more uniformly distributed precipitate structure in the aluminum matrix, which contributes to the increase in hardness.
Pemanfaatan Panas Buang Knalpot Sepeda Motor Menggunakan Termoelektrik Faiz, Abdurrahman; Hidayah , Fachrul; Yusuf Yunus , Muh; Bhuana , Chandra; Marhatang
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5831

Abstract

Penelitian ini membahas pemanfaatan panas buang knalpot sepeda motor menggunakan Thermoelectric Generator (TEG) sebagai sumber energi alternatif. Sebanyak 12 modul TEG tipe SP1848-27145 dipasang pada pipa knalpot dengan media plat aluminium dan heatsink. Pengujian dilakukan pada kondisi motor diam dan berjalan dengan variasi putaran mesin 2000 rpm, 2500 rpm, dan 3000 rpm. Tegangan tertinggi sebesar 7,59 Volt diperoleh pada kondisi motor diam tanpa beban pada putaran 3000 rpm, sedangkan daya tertinggi sebesar 3,78 Watt terjadi pada kondisi berbeban di 2500 rpm. Hasil menunjukkan bahwa panas buang knalpot dapat dikonversi menjadi energi listrik melalui TEG sebagai sumber energi tambahan. Namun, diperlukan optimalisasi sistem pendinginan dan jumlah modul untuk meningkatkan efisiensi dan kestabilan daya.
Rancang Bangun Mesin Pelebur Sampah Plastik Menjadi Bahan Dasar Pembuatan Batako Abdul Rahman, Muhammad; Jefrianto; Bagas Alamsyah, Wahyu; Salam, Abdul; Nasrullah, Baso
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5837

Abstract

Permasalahan limbah plastik di Indonesia terus meningkat setiap tahun dan menimbulkandampak serius terhadap lingkungan. Penelitian ini bertujuan untuk merancang dan membangun mesinpeleleh limbah plastik sebagai solusi inovatif untuk mengolah sampah plastik menjadi bahan dasarpembuatan batako ramah lingkungan. Mesin ini dirancang dengan kapasitas 5 kg per batch, suhuoperasi maksimal 300 °C, menggunakan motor penggerak 2 HP dan sistem pemanas gas. Prosespenelitian meliputi perancangan, pembuatan komponen, perakitan, pengujian, serta analisis kinerja mesin.Hasil pengujian menunjukkan waktu pelelehan plastik 30–90 menit, dengan kuat tekan batako 4,94 MPauntuk campuran plastik dan oli, serta 2,23 MPa untuk campuran dengan pasir. Mesin berfungsi stabil,efisien, dan mudah dioperasikan. Penelitian ini membuktikan bahwa pemanfaatan limbah plastik untukpembuatan batako dapat menjadi alternatif solusi lingkungan dan ekonomi yang berkelanjutan.
Pengembangan Desain dan Fabrikasi Mesin Pencacah Es Balok PS, Rahmat; Mu'tasim; Salam, Abdul; Hasanah Mihdar, Uswatul
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5867

Abstract

Based on observations conducted at several fish auction sites and fish vendors around fish markets, it was found that these locations require approximately 40 blocks of ice per day for fish preservation. Several limitations of the existing block ice crushing machines include the high workload required to insert ice blocks into the machine inlet and the production of only one type of crushed ice, namely a mixture of fine and coarse fragments. This applied design research aims to develop a block ice crushing machine capable of producing two types of crushed ice, namely fine and coarse fragments with more uniform particle sizes, and to evaluate the machine performance based on rotational speed variations in terms of crushed ice quality and production capacity. The research methodology consisted of several stages, including designing the machine structure with a foldable inlet channel, detachable crushing rods on the crushing drum, and a more practical construction design. The subsequent stages involved machine fabrication, machine performance testing at various rotational speeds, and the calculation of manufacturing costs. The results show that the best performance for fine ice crushing was achieved at a machine speed of 1100 rpm with particle sizes ranging from 0.5–2 cm, while coarse crushing was optimal at 900 rpm with particle sizes ranging from 5–8 cm. The manufacturing cost for producing this block ice crushing machine was Rp 5,253,438.
Perencanaan PLTS Untuk SPKLU Tipe Fast Charging Dengan Objek Kendaraan Roda Dua Dua Lembang, Aldino Purwanto; Haerani; Firman; Marhatang; Jamal
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5868

Abstract

This study aims to develop a design for a Public Electric Vehicle Charging Station of the fast-charging type for two-wheeled vehicles powered by a Solar Power Plant. The system is designed to support the clean energy transition and provide a sustainable charging solution. The Electric Vehicle Charging Station is assembled using a single solar panel with a capacity of 375 WP, a 12V 100Ah storage battery, an MPPT 60A controller, a 1200W 20A boost step-up converter, a 24V DC fan, a diode, and a battery capacity module. The test results show that the lithium-ion battery with an initial voltage of 48V and an initial charging current of 2.57A reached full charge (52V) within 1 hour and 30 minutes, while the SLA battery with an initial voltage of 52V and an initial charging current of 0.56A reached 52.8V in 3 hours and 10 minutes. The system demonstrated component stability, particularly in the boost converter, and operated effectively with a constant input power of 81.33W. However, the 12V 100Ah storage battery capacity was insufficient to charge more than one battery, indicating the need for a larger storage capacity.
Optimalisasi Desain PLTS Hybrid Untuk Efisiensi Energi Pada Gedung Teknologi Rekayasa Energi Terbarukan Ruswandi Djalal, Muhammad; Marhatang, Marhatang; Syahimullah, Akzar Dwi; Ardiansya Syamsul, Vito
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5869

Abstract

The increasing demand for electrical energy necessitates the implementation of sustainable and efficient renewable energy technologies. This study aims to design and evaluate the performance of a Hybrid Solar Photovoltaic (PV) System integrated with the Internet of Things (IoT) at the Renewable Energy Engineering Technology (TRET) Building of Politeknik Negeri Ujung Pandang. The system combines energy from solar panels, batteries, and the utility grid, supported by an IoT-based monitoring platform for real-time observation of electrical parameters. The research methodology includes hardware configuration using PV modules, a hybrid inverter, battery storage, PZEM-004T and PZEM-017 sensors, and an ESP32 microcontroller connected to the Blynk application. Performance testing was conducted by measuring voltage, current, power, energy, and solar irradiation, as well as calculating daily irradiation, specific yield (Yf), performance ratio (PR), panel efficiency, and overall system efficiency. The experimental results indicate that the hybrid PV system operates efficiently and reliably, achieving a daily solar irradiation of 6.37 kWh/m², a specific yield of 7.92 kWh/kWp, and a performance ratio of 124.3%. The average panel efficiency reached 12.1%, while the system efficiency was 23.5%. Meanwhile, the on-grid system achieved a panel efficiency of 27.9%, system efficiency of 27.7%, and a PR of 146.5%, whereas the off-grid configuration yielded a panel efficiency of 13.6%, system efficiency of 14.6%, and a PR of 77.3%. These findings demonstrate that the hybrid configuration effectively integrates the strengths of both on-grid and off-grid systems, resulting in optimal performance. Additionally, IoT integration enhances monitoring and control capabilities, supporting efficient energy usage and enabling smart renewable energy management. Thus, the IoT-enabled hybrid PV system proves effective in promoting energy efficiency and serves as a model for sustainable renewable energy implementation.
Implementasi Sistem Monitoring Posisi pada Overhead Crane Berbasis Internet of Things Mukhtar; Habriansyah, Imran; Djihad, Hilal Ansyari
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5878

Abstract

An overhead crane is a material handling device with a bridge-like structural frame supported at both ends by wheels that move along a rail track. This equipment is generally driven by an electric motor with high torque and is widely used in industrial activities for lifting and transporting materials. However, conventional operation of overhead cranes still poses a risk of workplace accidents because operators must remain close to the crane's operating area during control. This research aims to design and implement an Internet of Things (IoT)-based position monitoring system for an overhead crane in order to improve operator safety and enable remote monitoring of crane movement. The system utilizes a NodeMCU ESP32 as a communication interface between the monitoring system and the server, while a rotary encoder is used as a sensor to detect the crane's position. The experimental results show that the developed monitoring system is capable of detecting and displaying the crane position in real time through a web-based interface. Prototype testing indicates that the system can monitor crane movement to the left and right within a position range of −500 mm to +500 mm with a reading frequency of 26 Hz and stable system performance. These results demonstrate that the proposed IoT-based monitoring system can effectively assist operators in monitoring crane movement remotely, thereby improving operational safety and efficiency in industrial environments.
Pengaruh Beban Puncak dan Beban Minimum Terhadap Kinerja Turbin Gas pada GT 2.2 PLTGU Sengkang Muh Raehan Muyassar; Hamzah, Nur; Mulyadi, Musrady
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5892

Abstract

This study aims to analyze the effect of load variations, particularly peak load and minimum load conditions, on the performance of the gas turbine unit GT 2.2 at the Sengkang Combined Cycle Power Plant (Sengkang CCPP). The research method involves calculating the Heat Rate (kcal/kWh) and the thermal efficiency of the gas turbine (ηGT) based on field measurement data including key parameters such as fuel gas flow rate, power output (MW), and high heating value (HHV). The results show that gas turbine efficiency increases with higher operating loads. When operating at minimum load, the efficiency tends to be low, ranging from 17–19%, and even drops to 9% under extreme conditions (April 15, 2025). Under peak load conditions, the gas turbine efficiency increases significantly, reaching 34–37%.  It can be concluded that the performance of the GT 2.2 gas turbine at PLTGU Sengkang is strongly influenced by load variation. Keywords: Gas turbine, thermal efficiency, peak load, minimum load, Heat Rate, PLTGU Sengkang.
Sistem Distribusi BBM Dengan Metode Injeksi Menggunakan Pompa Kendali On-Off Alexander, Agustinus; Geraldi Harold; Ka’ka, Simon; Taufik, Akhmad
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5896

Abstract

This research, entitled “Fuel Distribution System Using Injection Method with On-Off Controlled Pump”, was conducted at PT Pertamina Patra Niaga Integrated Terminal Makassar. The device was developed as an effort to improve the effectiveness of the fuel distribution process and to reduce the risk of environmental pollution caused by temporary equipment that often leads to fuel spills around the temporary storage tank (sumb tank). The designed system is a permanent fuel distribution system equipped with a piping network, pump and motor control system, and digital pressure measurement. The experiment was carried out using 5,000 KL of fuel as the sample with five pressure variations, namely 10 bar (15%), 8.5 bar (25%), 7 bar (50%), 6.5 bar (80%), and 5 bar (100%), each tested for 5 minutes. The results showed that the highest flow rate occurred at 10 bar pressure with a value of 0.0096 m³/s, although this condition is not recommended because it can cause unstable fluid flow and pump irregularities. When all valves in the injection system are fully open, the pressure becomes stable and the fuel flow remains consistent. The optimal condition was obtained at 5 bar pressure (100%) with a flow rate of 0.1659 m³/s.
Rancang Bangun Mesin Filter Oli Bekas Berbasis Arduino Yosrhil; Fausi Lewa, Patrio; Lewi, Lewi; Hamzah, Firman
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5899

Abstract

The increasing use of lubricating oil in Indonesia has resulted in a significant amount of used oil waste, which is classified as hazardous and toxic material (B3). One liter of used oil can contaminate millions of liters of groundwater and reduce soil fertility, with an estimated waste volume of around 520 million liters per year. This research aims to design a used oil filter machine based on Arduino as a solution for reusing waste oil. The system employs an Arduino Uno integrated with temperature, pressure, level (ultrasonic and float), and flow rate sensors to monitor the filtration process in real time, along with LED indicators for pump and pressure status. Test results show that the filter is capable of reducing viscosity, removing particles, and improving the color of used oil, thereby enhancing its quality and feasibility for recycling and reuse, although additional substances are still required for broader applications.

Page 45 of 46 | Total Record : 456

 42   43   44   45   46 

Filter by Year

2008 2026


Reset
Filter By Issues
All Issue Vol 24 No 1 (2026): April 2026 Vol 23 No 2 (2025): Oktober 2025 Vol 23 No 1 (2025): April 2025 Vol 22 No 2 (2024): Oktober 2024 Vol 22 No 1 (2024): April 2024 Vol 21, No 2 (2023): Oktober 2023 Vol 21, No 1 (2023): April 2023 Vol 20, No 2 (2022): Oktober 2022 Vol 20, No 1 (2022): April 2022 Vol 19, No 2 (2021): Oktober 2021 Vol 19, No 1 (2021): April 2021 Vol 18, No 2 (2020): Oktober 2020 Vol 18, No 1 (2020): April 2020 Vol 17, No 2 (2019): Oktober 2019 Vol 17, No 1 (2019): April 2019 Vol 16, No 2 (2018): Oktober 2018 Vol 16, No 1 (2018): April 2018 Vol 15, No 2 (2017): Oktober 2017 Vol 15, No 1 (2017): April 2017 Vol 14, No 2 (2016): Oktober 2016 Vol 14, No 1 (2016): April 2016 Vol 13, No 2 (2015): Oktober 2015 Vol 13, No 1 (2015): April 2015 Vol 12, No 2 (2014): Oktober 2014 Vol 12, No 1 (2014): April 2014 Vol 11, No 2 (2013): Oktober 2013 Vol 11, No 1 (2013): April 2013 Vol 10, No 2 (2012): Oktober 2012 Vol 10, No 1 (2012): April 2012 Vol 9, No 2 (2011): Oktober 2011 Vol 9, No 1 (2011): April 2011 Vol 8, No 2 (2010): Oktober 2010 Vol 8, No 1 (2010): April 2010 Vol 7, No 2 (2009): Oktober 2009 Vol 7, No 1 (2009): April 2009 Vol 6, No 2 (2008): Oktober 2008 Vol 6, No 1 (2008): April 2008 More Issue