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All Journal Jurnal Simetris SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Electrical Technology UMY JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal Rekayasa Material, Manufaktur & Energi RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Hasil Pengabdian Kepada Masyarakat Multitek Indonesia : Jurnal Ilmiah Ihsan: Jurnal Pengabdian Masyarakat Jurnal MESIL (Mesin Elektro Sipil) JTTM: Jurnal Terapan Teknik Mesin ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Indonesian Community Journal Teknologika Jurnal Rekayasa elektrika Majalah Teknik Mesin
Affandi
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Muhammadiyah Sumatera Utara
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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DESIGN OF A 4 BAND COLOR CODE RESISTOR CALCULATOR APPLICATION BASED ON THE JAVA PROGRAMMING LANGUAGE Siregar, Rahmat Fauzi; Al-Khowarizmi, AK; R, Rohana; A, Affandi; Nasution, Arya Rudi
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Publisher : RELE (Rekayasa Elektrikal dan Energi) : Jurnal Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rele.v6i2.17251

Abstract

This research aims to design and develop a 4 band resistor color code calculator application based on the Java programming language. This calculator is designed to help electronics technicians identify resistor values based on the color code found on 4 band resistors. This application provides an intuitive and user-friendly interface that allows users to enter the color of each band on a resistor and quickly displays the corresponding resistance value. Apart from that, this application can also provide the tolerance of a given resistor. The development method used in this research includes needs analysis, user interface design, implementation of resistance value calculation algorithms, and application testing. This application is implemented using the Java programming language and supported by the JavaFX graphic library to create an attractive interface. Test results show that this application can calculate resistance values accurately and is responsive to user input. With this application, it is hoped that users can easily and quickly identify the resistance value of 4 band resistors, increase efficiency in their work, and reduce the possibility of errors in deciphering resistor color codes.
Design and manufacture of mechanical drive systems for road sweepers on flat surfaces Iqbal Raihan; Mirzal Lubis; Ahmad Marabdi Siregar; Chandra A Siregar; Affandi
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 1 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i1.789

Abstract

The sweeper works by utilizing pushing force because it does not use a motor, so it is environmentally and energy friendly. The manufacturing and assembly process is carried out after all machine components are made according to the designed sizes. The working principle of this machine is that the wheel is the driving source using a gear and chain transmission. The driving source for the directional broom is located on the left side of the wheel, using an umbrella gear to change the direction of rotation of the broom to the opposite direction. Meanwhile, for the distribution broom, the driving source is located on the right side of the wheel. By using two gears that touch each other and the difference in the number of teeth, namely three to one, can produce a fast sweeping speed. The function of the directional broom is to direct rubbish that is in the corners of walls or rooms to the middle of the machine. Meanwhile, the function of the distribution broom is to distribute waste to the tub which has been directed by the guide broom towards the middle of the machine. After testing, it turned out that this sweeping machine can optimally pick up all the rubbish on a flat surface along with the dust. The results of the design of this machine have been able to produce very good performance, apart from saving time it also produces fairly clean sweeping results
Pelatihan dan Penguatan Komunikasi Kepada Kelompok Tani Tentang Pembibitan Sawit Bersertifikasi Rosliana Lubis; Effiati Juliana Hasibuan; Ahmad Prayudi; Affandi Affandi
I-Com: Indonesian Community Journal Vol 4 No 4 (2024): I-Com: Indonesian Community Journal (Desember 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v4i4.5713

Abstract

This community service activity aims to provide training and strengthen communication to farmer groups about certified oil palm nurseries. The activity partner is a farmer group (Poktan) Putra Mandiri of Gunung Ambat village, Sei Bingai District, Langkat Regency, North Sumatra. The productivity of oil palm fresh fruit bunches (FFB) in this village is still low because the oil palm seeds used are "mariles ” seeds or random seeds that are not certified. The form of activities carried out are: (a) Training to partners on certified oil palm seedlings and seedling techniques, and (b) Practical practice of planting certified oil palm sprouts on partner land with DXP Simalungun variety. The results of the training and practical practice showed an increase in the knowledge and skills of farmer groups about certified palm oil seeds and nursery techniques, as well as the formation of a more effective communication model in the form of a combination of theory and practical practice. Strengthening this communication is key in conveying clear and applicable information, so that it can encourage the sustainability of more productive oil palm farming businesses.
Experimental Analysis of Climate Parameters Effect on Structural Steel Atmospheric Corrosion Rate in Medan City Environment Tanjung, Iqbal; Lubis, Riadini Wanty; Gultom, Zuli Agustina; Affandi, Affandi; Siregar, Chandra A; Fonna, Syarizal
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 2 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.2.135-143

Abstract

This study aims to explore the important role of weather parameters i.e. humidity, rainfall, temperature, and wind speed on the corrosion rate in the Medan City atmospheric environment. Three forms of material with low carbon steel type were prepared in this investigation. The exploration process was conducted for six months starting from June to December 2023, in the open area of the Engineering Faculty, Universitas Muhammadiyah Sumatera Utara. Corrosion rate assessment is carried out monthly using the weight loss method and climate parameter data is obtained from the Medan City Meteorology and Geophysics Agency (BMKG). The dimensions, initial preparation, data collection, post-test material preparation, and corrosion rate calculations refer to the ASTM G1 and G50 standards. Regression analysis and Pearson correlation explain the relationship between corrosion rate and climate parameters. The investigation showed that the corrosion rate fluctuated monthly from 0.1 to 0.5 mpy. By referring to corrosion resistance data on metal materials, it was found that the corrosion level was in the good resistance category "outstanding". Based on the regression analysis results, humidity, local temperature, and rainfall play an important role in the atmospheric corrosion rate in Medan City. The percentage of closeness between variables is ± 98% and the standard deviation is ± 0.0001. Further development is needed to determine other parameters that also play an important role in atmospheric corrosion rate and forming a random forest model for predicting future corrosion rates.
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).
Effect of Spindle Speed on the Bending Test of Al-1100 in Fraction Stir Welding Joints Bintoro, Suryanto Agung; Nasution, Arya Rudi; ., Affandi; Siregar, Rahmat Fauzi; Harahap, Jagodang
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.v8i2.25522

Abstract

Currently, in the industrial world, many products or components are required to have strong but light properties. Therefore, aluminum material is increasingly being chosen as the main material in the industrial production process. Aluminum and its alloys are classified as light metals that have high strength, corrosion resistance, fairly good electrical conductivity, and are lighter than iron or steel. However, aluminum has a weakness in its welding ability which is not good when compared to other metals. This problem can be overcome by the Solid-State Welding (SSW) welding method. SSW itself is a welding process carried out when the metal is still solid, meaning that the metal does not melt. One of the SSW methods that is often used is Friction Stir Welding (FSW), which is a solid-state welding technology that is very suitable for joining materials such as aluminum. FSW does not require additional materials, but instead utilizes the heat from friction between the probe and shoulder of the welding tool with the surface of the workpiece. This research on Friction Stir Welding aims to determine the effect of variations in feed rate on the strength of 1100 aluminum joints through tensile tests. The pin tool used is made of carbide, cylindrical in shape with a length of 100 mm and a diameter of 3 mm. The test specimen used was aluminum 1100 with a thickness of 3 mm, a length of 200 mm, and a width of 20 mm, and was made into 9 samples. The FSW welding process and the manufacture of test specimens were carried out according to the ASTM E8 standard. During the welding process, the pin tool rotated at 2200 Rpm, and the feedrates used were 50 mm/min, 100 mm/min, and 150 mm/min. After welding, a tensile test was carried out on the FSW joint results. There were nine tensile tests, with each feedrate parameter tested on three samples. The average tensile strength of the FSW joint on a 2200 Rpm spindle with a feedrate of 50 mm/min was 12.34 MPa, at a feedrate of 100 mm/min was 21.53 MPa, and at a feedrate of 150 mm/min was 29.21 MPa.
Optimizing Light Detection with Photodiode Sensor Arrays using Linear Regression Siregar, Rahmat Fauzi; Mustar, Muhamad Yusvin; Affandi, Affandi; Nasution, Arya Rudi; Br. Sembiring, Adelia Febrina
Jurnal Rekayasa Elektrika Vol 21, No 3 (2025)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v21i3.42384

Abstract

Photodiode sensors are widely used in various applications such as light intensity measurement, optoelectronic devices, and automation. In improving the quality of measurement and automation systems, more sophisticated technology is needed such as photodiode sensor arrays, which allow more accurate data collection from multiple sensors simultaneously. This research aims to design a photodiode sensor array with high sensitivity. The system design consists of six photodiode sensors combined with a summing amplifier circuit and a non-inverting amplifier as a signal conditioner which is then processed by a microcontroller. After that, the linear regression function is determined through the calibration process and experiments carried out. Two linear regression functions are obtained and implemented in two operating modes: normal mode and sensitive mode. Experimental results yield two linear regression functions applied to a photodiode sensor array in normal and sensitive modes. Normal mode shows 82.50% accuracy with a 36.69% coefficient of variation, while sensitive mode boasts 94.05% accuracy and 49.81% coefficient of variation. Both modes cater to different light conditions, with sensitive mode excelling in detecting light intensity. Linear regression implementation proves precise and accurate for light detection.
Co-Authors A M Siregar A R Nasution Ade Gunawan Ahmad Marabdi Siregar Ahmad Marabdi Siregar Ahmad Prayudi Al-Khowarizmi, AK AM Siregar Arya Rudi Nasution Balisranislam, Balisranislam Benny Oktrialdi Bintoro, Suryanto Agung Br. Sembiring, Adelia Febrina C.A Siregar Candra A Siregar Chandra A Siregar Chandra A Siregar Chandra A Siregar Chandra Amirsyah Putra Siregar Dewi, Irma Effiati Juliana Hasibuan Fonna, Syarizal Harahap, Jagodang Harahap, Muhammad Alwi Ripay Hasanul Arifin I Tanjung Iqbal Raihan Iqbal Tanjung Khairul Umurani Khairul Umurani Khairul Umurani khairul umurani Lubis, Riadini Wanty Mirzal Lubis Muhammad Aga Sekamdo Muhammad Refan Mustar, Muhamad Yusvin Nasution, Khairil Azmi Partaonan Harahap R S Harahap R, Rohana Rahmatullah Rahmatullah Refan, Muhammad Rohana Rohana Rosliana Lubis Siregar, Chandra A Siregar, Rahmat Fauzi Sri Frapanti Syarizal Fonna Syarizal Fonna Syifaul Huzni Tanjung, Iqbal Tanjung, Iqbal Ulil Amri Umurani, Khairul Z. Fuadi Zuli Agustina Gultom