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 417 Documents
 31   32   33   34   35 
Studi Sifat Mekanik Komposit Polimer Serat Bambu Dengan Struktur Berlapis Aminur Aminur; Sudarsono Sudarsono; Raden Rinova Sisworo; Prinob Aksar; Citra Yurnidar Syah; Wa Ode Nartin Hamundu
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.3808

Abstract

Natural composites are one of the smart materials that have the opportunity to replace the use of synthetic composites. and metal materials. Layered structural composites provide nearly uniform properties on all sides. The purpose of this study was to determine the mechanical properties of tensile, compressive and impact on the behavior of bamboo fiber polymer composites with a layered structure. This research method is experimental where the specimens are made in 2 quasine isotropic configuration configurations namely [+60/0/-60] and [+45/0/-45] with layer thicknesses of 1.0 mm, 1.5 mm, respectively. and 2.0mm. The highest tensile strength is 8.173 N/mm2 in the [+60/0/-60] arrangement and the lowest is 6.196 N/mm2 in the [+45/0/-45] arrangement. The highest impact strength is 34.259 kJ/mm2 in the [+45/0/-45] array configuration and the lowest tensile strength is 10.775 kJ/mm2 in the [+60/0/-60] array configuration. The highest compressive strength is 15.856 N/mm2 in the configuration [+60/0/-60] arrangement and the lowest compressive strength is N/mm2 in the configuration [+45/0/-45]. The [+60/0/-60] array configuration has better mechanical properties than the [+45/0/-45] configuration. Where the tensile strength, compressive strength and impact strength increase with increasing layer thickness. Keywords: composite, layered structure, tensile, compressive and impact
Pengembangan Prototipe Kandang Ayam Cerdas Menggunakan Solar Panel Berbasis Internet of Things Firman Hamzah; A. Chaerul Aksha Pratama; Raehanah A. Yusri; Lewi Lewi; Abdul Kadir Muhammad; Imran Habriansyah; Akhmad Taufik
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.3697

Abstract

Peternakan adalah kegiatan mengembangbiakkan dan membudidayakan hewan ternak untuk mendapatkan manfaat dan hasil dari kegiatan tersebut. Sebagian besar peternak di Indonesia masih menggunakan cara tradisional/ konvensional dalam beternak. Bagi peternak berskala besar hal tersebut tentunya menjadi tugas yang sulit untuk menjaga hewan ternak sepanjang waktu. Pemberian pakan, minum, desinfektan, dan pembersih kotoran masih dilakukan secara manual sehingga menyita banyak tenaga dari para peternak. Penelitian ini bertujuan untuk memodifikasi sistem kandang ayam cerdas sebelumnya agar dapat memberikan pakan, minum, disinfektan, dan pembersih kotoran secara otomatis sehingga peternak tidak perlu datang ke kandang secara langsung. Sistem tersebut memerlukan komponen-komponen yang menggunakan sumber daya listrik yang besar sehingga penggunaan Solar Panel (Tenaga Surya) sebagai sumber daya listrik dapat menghemat penggunaan listrik pada alat kontrol yang dibuat. Hasil penelitian menunjukkan bahwa penggunaan Solar System sebagai sumber daya listrik utama pada kandang ayam cerdas yang dibuat berhasil diaplikasikan untuk menyalakan serta menjalankan semua aktivitas yang telah dijadwalkan pada alat. Mekanisme pembersih kotoran kandang yang telah dibuat dapat bekerja sesuai dengan jadwal yang telah ditentukan. Pemberian pakan, minum, disinfektan, dan pembersih kotoran dapat dipantau melalui aplikasi monitoring.
Sifat Mekanis & Struktur Mikro Aluminium Paduan (Al-Si) Pada Pengecoran Dengan Menggunakan Cetakan Berputar Uswatul Hasanah Mihdar; Ahmad Nurul Muttaqin
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4182

Abstract

This study aims to analyze the effect of variations in mold rotation speed and pouring temperature on the quality of casting aluminum alloy (Al-Si) which includes mechanical properties and microstructure. The selected speed variations are 200 rpm, 250 rpm, and 300 rpm. While the pouring temperature variations are 640oC, 660 oC, and 680 oC. The tests carried out were the hardness test and tensile test as well as a photo of the structure micro to be used to calculate the average grain size. The highest hardness value is found at 300 rpm with a temperature of 680 oC of 81.42 HB, while the lowest hardness value is found at 200 rpm with a temperature of 640 oC of 77.9 HB. The highest tensile strength is found at 300 rpm with a temperature of 660 oC 236.52 N/mm2 and the lowest tensile strength is at 250 rotations with a temperature of 680 of 171.92 N/mm2. The lowest average grain size value is found at 300 rpm rotation with a temperature of 680oC of 87.1781 µm, while the highest average grain size value is found at 200 rpm rotation with a temperature of 640 oC of 139.951 µm.
Volume Kerja dan Waktu Penggilingan Tongkol Jagung pada Ukuran Produk/ Morfologi dalam Proses Ball Mill Ahmad Nurul Muttaqin; Uswatul Hasanah Mihdar
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4203

Abstract

The use of corncob powder is very wide in various industrial fields, namely as a source of dietary fiber, the basic material for making bio-plastics, partial replacement of cement in the manufacture of concrete, functional chemicals, oyster mushroom cultivation media. The most efficient method in producing corncob powder is the Ball Mill Process. The purpose of this study was to evaluate the effect of working volume and milling time on the characteristics of corn cob powder. The research procedures include specimen preparation (including cutting and drying processes) and milling processes. The results obtained were then characterized using a scanning laser microscope (LSM) to analyze the morphology and size of the product, lower working volume results in a smaller powder production with a needle-like sharp edge morphology and a higher work volume also results in a powder that has a blunt edge morphology. Although working volume can potentially be used to control particle size, this parameter has a direct effect on powder yield. As for the long milling time, it produces a smaller powder size than the faster milling time. 
Analisis Pengaruh Diameter Sudu Pipa Elbow Terhadap Kinerja Turbin Jamal Jamal; La Ode Musa; Joy E. Sitayani; Lovejuwantri Batu Pagallaran
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4204

Abstract

In this study, three turbines were tested with variations in the diameter of blades the elbow pipe, are ½ inch, ¾ inch and 1 inch, the three turbines were tested alternately. The working principle of the test installation is that the pump circulates pressurized water through a pipe from the lower reservoir to the nozzle, the water spray from the nozzle hits the turbine blades so that the turbine rotates, the water falls and flows back into the reservoir. The turbine rotation that occurs also causes the rotation of the pulley and generator. The rotating generator produces electricity, which is sent to the lamp load until it lights up. The lowest performance of the 90° elbow turbine is at an output power of 1.35 watt with a system efficiency of 28.28% occurring in the use of ½ inch diameter elbow blades while the highest is at 2.76 watt power with 62.10% efficiency occurring in the use of ¾ Inch diameter elbow blades. On average, turbine elbow ½ inch has an efficiency of 33.57%, turbine elbow ¾ inch has an efficiency of 43.65% and turbine elbow one inch has an efficiency of 46.46%.
Modifikasi Desain Konstruksi Alat Bending V Dengan Sistem Hidro Pneumatik Rusdi Nur; Muhammad Arsyad Suyuti; Arial Arial; Farid Hidayat Arfa; Andi Fadel Ahmad
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4223

Abstract

Many forms of technological development aim to answer the need for human work efficiency, so an effective technology development effort is very necessary. As the times progress, of course, there are many changes, especially in science and technology, which may have shifted completely in the industrial area, meaning that in this change it is necessary to require extra operations, namely human labor replaced by machine power. One of them is a plate bending machine or what is called a bending machine. The purpose of this program according to the formulation of the problem above is to maximize the drive system and bending system so that the bent plates form a 90° angle. This research includes several things such as sketching or drawing of bending tools to be modified, as for what we modified, namely the replacement of the top and a larger bottom plate so that the pressing system functions properly, as well as the replacement on the spring so that it matches the load received by the spring. After determining the form of the construction design of the plate bending tool, then determine the concept of each main component of the plate bending tool in order to get maximum and good bending results. The data from the test results of this portable bending tool were tested with different plate thicknesses, namely 2 mm, 3 mm and 4 mm plates. Tests were performed on each thickness using the maximum bending line. Based on the tests carried out using this bending tool that the drive system works optimally and the bending system works properly and the maximum bending on a plate with a thickness of 4mm can be bending at the right angle of 90° is said to work optimally.
Analisis Kinerja Antena Pasif sebagai Penguat Sinyal Seluler Zaini Zaini
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4236

Abstract

Cellular signal reception in a place must always be good, so that the services perceived by the recipient such as calls, text, and data/internet are in a stable condition. If the condition of the received signal is weak (unstable) it is necessary to improve the signal power both on the transmitter and receiver side, however, the weak signal reception occurs in a certain area with narrow coverage such as a room, house, and the like, it is necessary to strengthen the signal only at that location. In this study, I would like to propose that signal amplification is carried out by placing a passive antenna which functions to capture signals directly from the BTS, then transmits the signal to the receiver's position via cable, and the receiver brings closer or attaches the cellphone to the end of the cable. The results of the simulation and measurement research show that the parameter value of VSWR is 1.5, impedance (Z) is 75-j30.8Ω, antenna gain is 3.27 dB, bandwidth is 23 mHz. while the results of the application of the antenna in the head room of the Ujung Pandang State Polytechnic library, the antenna gain reaches 5-6 dB with a transmission cable length of 10-30 meters, cable impedance of 50 Ω and 75 Ω.
Uji Eksperimental Fenomena Water Hammer dengan Variasi Ketinggian Surge Tower Amrullah Mansyur; Muh Rusdi; Yiyin Klistafani
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4226

Abstract

In this study an analysis of the water hammer process was carried out in a piping installation with two pumps of different specifications arranged in a single arrangement. The solution given as a form of water hammer protection is variations in the height of the surge tower in piping installations. The aim of this research is to identify the phenomenon of water hammer in piping installations with different pump discharges and the effect of the height of the surge tower as a damper against pressure fluctuations that occur. The test is carried out by closing the valve suddenly and varying the height of the surge tower to determine the pressure value that occurs due to the water hammer effect. From the experimental test results, it can be seen that a surge tower with a height of 1 meter can best dampen back pressure due to the water hammer effect at a discharge of 2.4 m3/h. The theoretical and experimental analysis shows that the addition of a surge tower can reduce the pressure due to the water hammer effect. The pressure drop is 2.6 kg/cm2 to 2.2 kg/cm2 in pump installation 1 and the pressure drop is from 4.6 kg/cm2 to 1.8 kg/cm2 in pump installation 2. The use of a surge tower with a height of 1 meter can best reduce back pressure with 2.78 hours s at a discharge of 1.4 m3/h.
Flow Sensor Berbasis IoT Mardhiyah Nas; Achmad Zubair
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4232

Abstract

Sistem manajemen air merupakan bagian penting dari manajemen kota. Pengelolaan air melibatkan penyediaan air sesuai dengan kebutuhan nyata dan tanpa membuang-buang air. Oleh karena itu, sangat penting untuk mengukur laju dan volume aliran air. Sistem monitoring distribusi air (flow sensor) konvensional menuju ke pelanggan dengan mencatat penggunaan melalui metering yang ada di sisi pelanggan secara manual. Sistem pengukuran debet air (metering) secara konvensional perlu menyediakan tenaga pencatat meter ke tiap pelanggan. Pencatatan secara manual ini sering dikeluhkan dari sisi akurasi akibat kehadiran petugas yang tidak konsisten. Penelitian ini mengusulkan sistem berbasis web dengan alat meter berbasis Internet of Things (IoT). Alat meter ini menggunakan modul ESP8266 yang akan mencatat penggunaan air secara otomatis tanpa diperlukan petugas pencatat meter. Selanjutnya dari modul ESP8266 ini akan mengirimkan sinyal hasil pencatatan melalui transmisi data menuju cloud server (Blynk IoT). Metode ini diharapkan menciptakan layanan yang lebih baik  Hasil uji akurasi alat ini menunjukkan memiliki sedikit perbedaan error 5% pada hasil uji dengan satuan mL, sehingga dapat disimpulkan bahwa sistem ini mampu memberikan alternatif pencatatan meter secara tepat.
Rancang Bangun Penjejak Matahari Untuk Optimasi Daya Panel Surya Marhatang Marhatang; Yiyin Klistafani; Fitra Firdaus; Ahmad Yani
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4231

Abstract

The limitation in energy provision has become quite a crucial issue. The oil reserves in Indonesia continue to decline, and a similar situation is occurring with coal reserves. Thus, a conventional and renewable energy source is needed that does not harm the environment, for example, solar energy. This research aims to harness solar energy that can still be converted into electrical energy, and it also aims to improve the power output of solar panels for better optimization. The research starts by planning the motor, battery capacity, and solar panel capacity. Field testing is conducted at Merdeka Field, Ujung Pandang State Polytechnic, and data is collected under two conditions: with the use of a sun tracker and without a sun tracker. The power output obtained from each solar panel is then calculated. Based on the research results, the testing using a sun tracker yielded a power output of 17,857 Watts with a horizontal position of 47° Northeast and a vertical position of 15° at 11:30 AM WITA (Central Indonesia Time). Meanwhile, during the testing without a sun tracker, it resulted in a power output of 16.2 Watts with a horizontal position of 0° North and a vertical position of 5° at 1:00 PM WITA, indicating an average increase of 43.03%.

Page 33 of 42 | Total Record : 417

 31   32   33   34   35 

Filter by Year

2008 2025


Reset
Filter By Issues
All Issue 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