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All Journal Media Mesin: Majalah Teknik Mesin Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Talenta Sipil jes Majalah Teknik Mesin
Umurani, Khairul
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH JENIS KATODA TERHADAP GAS HIDROGEN YANG DIHASILKAN DARI PROSES ELEKTROLISIS AIR GARAM Siregar, Munawar Alfansury; Umurani, Khairul; Damanik, Wawan Septiawan
Media Mesin: Majalah Teknik Mesin Vol 21, No 2 (2020)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v21i2.10386

Abstract

Produksi hidrogen dengan bahan baku air yang sedang dikembangkan ialah proses  elektrolisis. Tetapi karena proses elektrolisis membutuhkan energi listrik sebagai pemicu terjadinya  reaksi, sehingga proses ini memberikan  efisiensi yang relative rendah. Proses elektrolisis dapat dijalankan jika ketrsediaan akan sumber energi listrik yang murah lagi mudah didapatkan. Upaya menurunkan jumlah pemakaian energi listrik pada proses elektrolisis seperti pengujian dengan pariasi jarak katoda dan anoda, campuran elektrolit dan jenis elektroda yang digunakan terus dikembangkan agar dapat diterapkan dalam kehidupan bermasyarakat, tetapi belum menuai hasil yang memuaskan. Oleh sebab itu penulis merasa perlu melakukan penelitian tentang pengaruh jarak katoda dan anoda terhadap tekanan gas yang di hasilkan pada proses elektrolisis air garam. Penelitian ini menggunakan sumber arus baterai 12V, dan jarak yang telah ditetapkan pada katoda dan anoda ialah 80 mm,120 mm dan 200 mm. Jenis elektroda yang digunakan Stainless steel, Aluminium dan Tembaga, dengan jumlah campuran garam yang terlarut dalam air ialah 250 gram dalam lima liter air, atau sekitar 50 gram perliter air. Hasil dari pengujian tekanan gas yang dihasilkan oleh elektroda yang berbahan stainless steel lebih tinggi dibandingkan oleh elektroda yang berbahan aluminium dan tembaga  dan semakin dekat jarak elektroda maka tekanan gas yang dihasilkan semakin tinggi. Dengan menggunakan manometer tabung U tekanan gas hidrogen diukur pada elektroda stainless steel pada sisi katoda jarak 80 mm sebesar 9733 Pa, tekanan klorin pada sisi anoda 9246 Pa, jarak 120 mm tekanan hydrogen pada sisi katoda 7884 Pa, tekanan klorin pada sisi anoda 7838 Pa, pada jarak 200 mm tekanan hydrogen pada sisi katoda  5937 Pa, tekanan klorin pada sisi anoda 6326 Pa. Sedangkan tekanan hydrogen pada elektroda Aluminium pada sisi katoda  9246.8 Pa, tekanan klorin pada sisi anoda  9052 Pa,  dan tekanan hidrogen pada elektroda Tembaga tekanan pada sisi katoda  6034 Pa, dan tekanan klorin pada sisi 5840 Pa. Hasil menunjukkan perbandingan tekanan pada jarak yang telah di tetapkan dan perbandingan tekanan pada setiap jenis elektroda
Pengaruh Putaran Spindle Dan Bahan Spesimen Terhadap Gaya Potong Pada Proses Pemesinan Turning Sucipto, Hadi; Nasution, Arya Rudi; Umurani, Khairul; Siregar, Ahmad Marabdi
Rekayasa Material, Manufaktur dan Energi Vol 5, No 1: Maret 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i1.10267

Abstract

The turning Machining Process is one of the most commonly used machining processes in the industrial world, both in large-scale industries and small industries (home industries). The turning machining process is a process of changing the shape of the material by removing some of the material in the form of swells. During the machining process, there is an interaction between the tool and the workpiece specimen being cut which results in a change in the cutting force. The value of the cutting force is important information in research, this study aims to see the cutting force during the turning machining process using 2 different types. The research data collection method uses sensor tools, there are three sensors, namely the load cell sensor for cutting force, the photoelectric counter module for rotation (rpm), and the thermocouple for feeding temperature. The research variable used is the rotational speed of rpm starting from 90, 110, 150, and 190 rpm, the depth of cut is 0.3 mm. The cutting force generated on the DCGT insert chisel is 5.94N at 90 rpm, 4.13N at 110 rpm, 2.38N at 150 rpm, and at 190 rpm the DCGT chisel gets a force of 2.03N. Furthermore, the cutting force that occurs on the DCMT insert chisel is 2.94N at 90 rpm, 2.67N at 110 rpm, 2.61N at 150 rpm, and at 190 rpm the DCMT insert chisel gets a force of 2.51N. It can be concluded that the decrease in cutting force is influenced by the amount of rpm used, and the magnitude of the cutting force is due to vibrations that occur in the specimen caused by low rpm.
Perpindahan Panas dan Penurunan Tekanan Pada Plat Rata Dengan Media Berpori (Porous) Umurani, Khairul; ., Rahmatullah; Siregar, Ahmad Marabdi; Nasution, Arya Rudi; Pratama, Riza Fauzi
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.13598

Abstract

Convection heat transfer rate on a flat plate with a certain temperature can be increased by increasing the average heat transfer coefficient, increasing the surface area of heat transfer or both. In this study, stones and marbles were used as specimens of porous media with a diameter of 15 mm with a rock porosity of 43.8%, and marbles of 50.3% which were packed on a flat plate and tested in a rectangular air channel with an air velocity of 1 m /. s, 2 m / s, 3 m / s, 4 m / s, 5 m / s. Take experimental measurements on a heater set at 220 V. After steady conditions are established, record the temperature on the flat plate and the ambient air temperature. The highest Nusselt number occurs on flat plates with rock specimens of 69.025 and the highest convection heat transfer occurs on flat plates without porous media at 44.98 Watt, while convection heat transfer on flat plates with rock-porous media is lower than flat plates with porous media marbles. The friction factor decreases as the Reynold number increases. The greater the Reynold number, Nusselt number and the Convection heat transfer, followed by a decrease in the friction factor
Pengaruh Suhu Cetakan Terhadap Produk Plastik Berbahan Polyprophylen (PP) Pada Injection Molding F, Fadhlurrohman; Umurani, Khairul; A, Affandi; Nurdin, Hendri; Nasution, Arya Rudi
Rekayasa Material, Manufaktur dan Energi Vol 5, No 1: Maret 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i1.10264

Abstract

The manufacture of plastic products is carried out using the Plastic Injection Molding (PIM) method. The Injection Molding method is the process of forming a workpiece from granular compound material which is placed into a hopper and enters the injection cylinder which is then pushed through the nozzle. The materials used in this research are as follows: Polypropylene (PP) Plastic Seeds and the selected temperatures are 160C, 170C, 180C, 190C, 200C. After conducting several experiments on temperature variations of moving and stationary molds, it is known that the mold must have the right temperature to produce the product. This can be seen from the results of the research that the right mold temperature is 71C at rest and the heating temperature for moving molds is 63C the result is that the product has dried.
Design And Implementation Of Temperature Measuring Device Using Max6675 And Thermocouple On Wet Cooling Tower Umurani, Khairul; ., Rahmatullah; Nasution, Arya Rudi; Zufri, M Sayid
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19801

Abstract

Cooling Tower or cooling tower is a technology used in the industrial world, cooling tower works to cool water fluid by using wind power that comes from a fan or blower, how the cooling tower works is basically hot water coming from the machine is flowed to the cooling tower then water through the fill-fills that are in the cooling tower and in direct contact with the air, the cooling tower is focused on reducing the temperature of the inlet water until it leaves it, while the water temperature reading uses a thermocouple sensor. A thermocouple is a temperature sensor capable of reading temperatures from -200 ℃ to 1200 ℃. This cooling tower uses arduino mega circuit, PCB board, MAX6675 module and thermocouple. How to read the temperature on the cooling tower using a computer or laptop with Microsoft Excel that is already connected to the PLX-DAQ software. The data that has been obtained is then tested using SPSS (Statiscal Product and Service Solutions) software, testing using 3 types, namely normal distribution, standard deviation, and reliability. The overall results of the thermocouple sensor on the Wet Cooling Tower show normal performance according to statistical testing, including normal distribution, standard deviation, and reliability. All data and values obtained have met the established standards 
Analisis Ketidakstabilan Beban Arus Netral dan Rugi-Rugi Daya Pada Trafo Distribusi Penyulang Pas 21 PT. PLN UPB Banda Aceh Suriadi; Sara, Ira Devi; Syuhada, Ahmad; Masri; Asri; Umurani, Khairul
Journal of Engineering and Science Vol. 2 No. 2 (2023): July-December 2023
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v2i2.167

Abstract

This research focuses on analyzing power losses due to load imbalance in the medium-voltage distribution network in Pasar Aceh. The aim is to determine the magnitude of power losses that occur at the distribution substation in Pasar Aceh. The research method involves analysis, calculations, and simulations using the ETAP 12.6 software. The results of the analysis indicate that load imbalance in the Pasar Aceh substation leads to power losses. The Trafo Samping Pasar Aceh experiences power losses of 0.77% with a load imbalance of 16.33%. The second transformer in the BNI 46 area incurs power losses of 0.98% with a load imbalance of 30.33%, and the transformer in the BLKG KOTTY area has power losses of 1.17% with a load imbalance of 50.33%. These findings affirm that the greater the load imbalance, the higher the resulting power losses in the electrical distribution network.
Rekayasa Alat Pendeteksi Kebocoran Gas Berbasis Arduino Uno Dengan Sensor MQ-2 Pada Regulator LPG ., Rahmatullah; Umurani, Khairul; Amiruddin, Arfis; Kurniawan, Wahyu; Siregar, Ahmad Marabdi
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.21983

Abstract

The engineering of an Arduino Uno-based gas leak detection device with an MQ-2 sensor was created to optimize security against gas leaks that occur. The public must know the signs of a leak, such as smelling gas, a hissing sound in the gas line and so on. The aim of engineering this tool is to create an Arduino Uno-based gas leak detection tool that uses the MQ-2 sensor on the LPG regulator. Gas leaks can cause risks such as fire and explosion, so it is important to have a gas detection system. When the sensor detects the presence of gas, the system will trigger a buzzer to provide an audible alarm and turn on the LED light as a visual indicator. The LCD will display the detection status with clear text, namely "Leak Danger" when gas is detected, and "Safe" when there is no leak. The test was carried out using a 3 kg LPG gas cylinder, with the results showing that the MQ-2 sensor could detect gas within 3 seconds. The results of this test prove that the tool developed is able to provide a fast response to gas leaks, so it can be a solution to increase the safety of LPG use.
Pembuatan Alat Pelipat Baju Otomatis Berbasis Arduino Uno Untuk UMKM Laundry Umurani, Khairul; Rahmatullah, Rahmatullah; Muharnif, M.; Asfiati, Sri; Sandi, Didik Mei
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.22371

Abstract

Laundry workers are required to be able to fold quite a lot of clothes in a fairly short time and neatly. Based on this, an innovation is needed in terms of folding clothes that can help household chores and the UMKM scale laundry industry in terms of folding clothes. The main aim of the research is to create an Arduino-based automatic clothes folding device. Arduino Uno is a microcontroller that is often used in making prototypes of electronic circuits which are useful for making things easier for users. Making an Arduino-based module requires a circuit schematic which is useful for making things easier when making tools. Electronic circuit schematics are needed as a guide in making electronic circuits. The electronic circuit schematic should be designed or drafted first before carrying out the process of making the electronic circuit. Testing of this servo motor is carried out by starting the rotation of the servo motor from an angle of 0⁰ to a rotation of 180⁰. The test results can be concluded that the three servo motors used are in good condition. Having an automatic clothes folding tool can help with daily housework and help laundry entrepreneurs in folding clothes neatly, saving time and energy. The time required to fold a short-sleeved t-shirt is 3.56 seconds and a short-sleeved shirt is 3.66 seconds
ANALYSIS OF CUTTING FLUID ON MASS LOSS OF CARBIDE INSERT IN THE MILLING PROCESS Nasution, Arya Rudi; Affandi, Affandi; Umurani, Khairul; Rahmatullah, Rahmatullah; Refan, Muhammad
Media Mesin: Majalah Teknik Mesin Vol. 25 No. 1 (2024)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v25i1.2896

Abstract

The Machining process is manufacturing in the world industry that is widely used. The coolant in the machining process functions to lower the temperature and lubricate and clean the gram in the cutting process. The application of coolant in the cutting process is to maintain the quality of the workpiece during the cutting process and also serves to improve tool life so that the tool does not wear out easily. This study aims to determine the effect of a chemical-based coolant based on dromus oil and vegetable CPO on tool wear in the face milling process and to determine whether or not the liquid is effective in reducing and slowing down tool wear. In this research, the face milling process used a grey cast iron specimen as the workpiece specimen used and also used a carbide insert chisel cutting tool with the TPKN 22 VC2 type. The research was carried out by varying the engine speed and also the coolant variation, the engine speed variations used were 80, 360 and 720 Rpm. In the process of administering coolant using the method, it is sprayed directly onto the workpiece area which is cut continuously, in the milling process with a response variable that can be in the form of data or tool wear values that have been observed and tested using a microscope test tool, using the weight (mass) method to see the wear value. This research aims to see how effective the use of vegetable- based coolant (CPO) during experiments as a coolant in the machining process aims to ensure that the final value of tool insert wear must be smaller with (CPO) compared to chemical coolant (dromus).
Iot-Based Real-Time Monitoring System For Enhancing Shrimp Pond Management: A Case Study In Deli Serdang, North Sumatra, Indonesia Umurani, Khairul; ., Rahmatullah; Asfiati, Sri; Nasution, Arya Rudi; Putera, Tondi Amirsyah; Saputra, Andrea
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24543

Abstract

Monitoring shrimp ponds involves observing and measuring key environmental factors that influence shrimp health and growth. This study was conducted at a shrimp pond on Jalan Paluh Merbau, Tj. Rejo, Kec. Percut Sei Tuan, Deli Serdang Regency, North Sumatra, Indonesia. Traditionally, air humidity and water temperature are monitored manually by taking water samples for laboratory analysis or using litmus paper. These conventional methods are time-consuming and prone to inaccuracies, potentially compromising shrimp health. To address these challenges, this research implemented an Internet of Things (IoT)-based monitoring system to automate the measurement of air humidity and water temperature. The system utilizes DHT11 and DS18b20 sensors, integrated with an ESP32 module, to continuously collect data and automatically transmit it to Google Sheets for real-time monitoring. This IoT approach enables shrimp farmers to easily track water quality parameters, enhancing the accuracy and efficiency of pond management. A two-day testing phase demonstrated stable environmental conditions, with humidity levels recorded at 86.5% to 87.78% and water temperatures ranging from 27.55°C to 28.06°C. These readings were within the ideal thresholds for optimal shrimp growth, showcasing the system's effectiveness in maintaining suitable pond conditions. This research will contribute significantly to more efficient, accurate, and sustainable shrimp farming practices.
Co-Authors A, Affandi Affandi Ahmad Marabdi Siregar Ahmad Syuhada Amiruddin, Arfis Andri Andri Arya Rudi Nasution Asfiati, Sri Asri F, Fadhlurrohman Fathimah, Hafizah Siti Hadi Sucipto, Hadi Ira Devi Sara Masri Muhammad Hafiz Muharnif M Nurdin Hendri Pratama, Riza Fauzi Putera, Tondi Amirsyah Rahmatullah . Rahmatullah Rahmatullah Refan, Muhammad Sandi, Didik Mei Saputra, Andrea Siregar, Munawar Alfansury Suriadi Wahyu Kurniawan Wawan Septiawan Damanik Zufri, M Sayid