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Yusrizal
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Radial : Jurnal Ilmiah Sains Dan Rekayasa
Published by Universitas Bung Karno
ISSN : 25799681     EISSN : 29879302     DOI : https://doi.org/10.62024/radial
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
RADIAL, Jurnal Ilmiah Sains dan Rekayasa adalah jurnal hasil peninjauan oleh rekan sejawat dari disiplin ilmu teknik bidang teknik mesin, dengan tujuan memberikan pengalaman riset, wawasan, dan pengembangan pada ragam bidang keilmuan teknik seperti manufaktur dan mekanika industri mencakup manufaktur hijau, analitik dan komputasi mekanika benda tegar (dinamika, getaran, stabilitas), mekanika struktural, material maju, kendali, konstruksi, pemrosesan bahan, pembentukan logam, material canggih (logam, komposit, polimer, keramik, seluler, pintar, dll.), biomaterial dan biomekanik, dinamika fluida, tribologi, termodinamika, otomotif, energi dan keberlanjutan, dan aspek terkait lainnya terhadap teknik dan teknologi. Jurnal ini tercatat resmi di RMPI BRIN untuk menerbitkan karya tulis ilmiah asli (orisinal) dan diterbitkan oleh Fakultas Teknik, Universitas Bung Karno Jakarta.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 12 Documents
 1   2 
Analisis Kinerja Turbin Pelton Proto X dengan Varian Ukuran Nosel Menggunakan Aplikasi CFD Yusrizal Yusrizal; Ayu Amanah; Bagas Prasetio
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.1

Abstract

After get trial of performance of Turbin Pelton Proto X was done with some variations of desain such as percentage of valve opening, nozel distance from center of runner and nozel diameter than get the result of performance. To complete and get perfection need to do simulation and analyse Computational Fluid Dynamic (CFD) uses powerfull engineering software. Based on turbin Pelton Proto X performance result, the velocity of flow is 1.74 m/s. This value will be use for fill parameter conditions when Ansys Fluent is setting up. For this case, it will simulate and analyse of turbin Pelton Proto X with different nozzle diameter and than know the type of flow happen in system of turbin Pelton piping. The result of this CFD analyzing can also give recommendations for development of turbin Pelton Proto X to get higher performance.
Pengaruh Variasi Kecepatan Putaran Spindle dan Kedalaman Pemakanan Terhadap Kekasaran Permukaan Alumunium ADC12 pada Mesin Bubut CNC Okuma L150T Jamaludin Jamaludin
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.2

Abstract

In the rapidly growing manufacturing industry, especially in the field of machining, the use of computer systems has become increasingly prevalent. Consumer demands for precise workpieces with consistent quality, quick completion, and large quantities can be more easily achieved using CNC (Computer Numerical Control) machine tools compared to conventional machine tools. To determine the influence of spindle rotational speed and feed depth variation on the surface roughness of ADC12 aluminum in the Okuma L150T CNC lathe, an experimental study was conducted. Aluminum ADC12 specimens were used, and variations in spindle rotational speed and feed depth were tested for surface roughness using a Mitutoyo SJ-210 surface roughness tester. The obtained data were then analyzed and discussed based on statistical correlation and hypothesis testing. From the results of this study, the following conclusions can be drawn: (1) There is an influence of spindle rotational speed variation. At speeds of 900 rpm, 1500 rpm, and 2100 rpm, the average surface roughness levels of the workpiece were 7.45 μm, 6.35 μm, and 5.23 μm, respectively. Therefore, higher spindle rotational speeds result in lower surface roughness of the workpiece. (2) There is an influence of feed depth variation. At depths of 0.25 mm, 0.50 mm, and 0.75 mm, the average surface roughness levels of the workpiece were 5.23 μm, 6.32 μm, and 7.42 μm, respectively. Thus, deeper feed depths lead to higher surface roughness of the workpiece. (3) The combination of feed depth variation and spindle rotational speed that resulted in the workpiece with the lowest average surface roughness was achieved at a feed depth of 0.25 mm and spindle rotational speed of 2100, which amounted to 5.23 μm.
Peningkatan Produktivitas Tanaman Hidroponik Menggunakan Tenaga Surya Fitria Hidayanti
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.3

Abstract

Electricity is highly essential in hydroponic agriculture. To enhance the productivity of hydroponic plants, LED grow lights are used to provide illumination during the nighttime. This electrical energy is utilized for the circulation pump of the plant's nutrients and to power the LED grow lights. To address this, the approach taken is to harness solar energy and convert it into electrical energy. This conversion of solar energy into electrical energy is known as photovoltaic, which involves the use of solar cells as the device. The hydroponic system employed in this research is the Deep Flow Technique (DFT) hydroponic system. The circulation pump operates every hour for 10 minutes, while the LED grow lights are turned on from 20:00 to 24:00. On average, the plants grow approximately 0.8 to 1.5 cm per day, and the leaves grow around 1 to 2 strands per day. The total daily electricity requirement for the circulation pump amounts to 36.4 watt-hours.
Rancang Bangun Sistem Monitoring Getaran pada Jalan Tol Erna Kusuma Wati; Ayu Maharani Larasati Putri
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.4

Abstract

The construction of toll roads is one of the infrastructure developments; however, the construction of new toll roads is often hindered by complaints from residents in the surrounding areas who feel disturbed by the vibrations caused by vehicles on the toll road. Therefore, there is a need for a vibration monitoring tool that can monitor vibration acceleration. This research has successfully developed an online vibration monitoring tool on the toll road using the MMA7361 accelerometer sensor. Field measurements were conducted for approximately 30 minutes on the edge of the Jakarta-Serpong toll road, specifically at Km-11. Data transmission was done online using the ESP8266 WiFi module and utilizing a portable WiFi hotspot from a cellular phone. The results showed that the magnitude of gravity acceleration changes due to passing vehicles. The measured gravity acceleration value within a distance of 1 meter from the slow lane or approximately the edge of the road shoulder never exceeded 0.5 m/s². At a distance of 10 meters away from the edge of the road shoulder, the gravity acceleration value became 0.07 m/s², which is the threshold that is not perceivable by humans and does not damage any structures.
Analisis Waktu Peluruhan Dini dan Waktu Dengung pada Ruang Teater Kiki Rezki Lestari; Andika Ahmad Triputranto
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.5

Abstract

In the stage of acoustic measurement of the room, a review of the research object, namely the Salihara Black Box Theater, is required. The review is conducted to obtain the necessary materials for the planning of the data collection format, such as the condition of the room when empty, examining the materials composing the surface of the room walls, as well as re-measuring the dimensions of the room and its equipment. The measurement of the room dimensions is also necessary for the empirical calculation of the Sabine reverberation time and for reproducing a model of the research object room. Moreover, it is used to consider the determination of the measurement points later on. All parameters are measured within the frequency range of 125 Hz to 4,000 Hz and taken from the perspective of comparing each receiving point. For the reverberation time (T30), values ranging from 0.6 seconds to 0.99 seconds are obtained. For the early decay time (EDT), values ranging from 0.45 seconds to 0.94 seconds are obtained. For clarity (C80), values ranging from 1.66 dB to 11.24 dB are obtained. For definition (D50), values ranging from 38.09% to 84.1% are obtained.
Pemakaian Metode ASME PTC 4.1 Pada Evaluasi Performa (Efisiensi) Boiler Pulverized Firing di Pembangkit Listrik Tenaga Uap (PLTU) Edy Sarwono; Indra Saputra
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 1 (2023): Maret
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i1.6

Abstract

The rankine cycle is widely used for thermal generators that use steam as a turbine driver in power generation plant. There are 4 main equipments in power plant with rankine cycle system that is: Boiler, Turbine, Condenser and Feed pump. Boiler is a tool to heat water up to steam with high temperature and pressure. Then steam goes into the turbine to drive the generator. The steam coming out of the turbine is cooled inside the condenser to be changed into liquid again. Condenser coolers are widely used in steam power plants is sea water, but some are using river water. Water becomes a working fluid in the rankine cycle and undergoes closed cycle (close loop cycle) meaning continuously water at the end of the cycle process re-entry to the early process cycle. There are several methods to calculate boiler efficiency by direct method (input method) and heat loss method (energy balanced method). The calculation by the direct method by dividing the resulting steam energy divided by the fuel energy coming into the boiler. While the calculation of boiler efficiency with heat loss method is the fuel energy that enter the boiler reduced by losses that occur in the boiler. ASME PTC 4.1 method can be used to calculate boiler efficiency at large boiler capacity, so PTC 4.1 method is often used to evaluate boiler in power plant. The ASME PTC 4.1 method is recommended for the calculation of heat-loss methods in the boiler and is often performed to review the efficiency according to the design as a benchmark.
Perancangan Sistem Safety Shut Off Valve pada Tabung LPG untuk Mencegah Bahaya Kebocoran Gas Fitri Rahmah; Adi Wiyono
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 2 (2023): September
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i2.7

Abstract

The program to convert kerosene to LPG (Liquefied Petroleum Gas) launched by the government since 2007 has had a positive impact, among other things because energy consumption has become more economical and use is relatively cleaner and easier. However, this program has negative impacts, including the potential for explosion and fire hazards due to gas leaks in the cylinders. Factors that can cause leaks in LPG cylinders are improper installation of the regulator, poor quality cylinder sealing rings, and even regulators that do not have the Indonesian National Standard (SNI). Seeing the potential for great danger due to gas leaks in LPG cylinders, the solution that can be implemented is to build a safety shut off valve system on LPG cylinders. In this paper, a safety shut off valve system is described which is designed and placed in the tube regulator section. System test results with an LPG gas concentration of 5000 ppm (parts per million) show that the average response time of the system in automatically activating the safety shut off valve is 0.55 seconds. The accuracy value of the designed system is shown through comparison with the results of mathematical calculations, namely having an error in the range of 1.76 percent - 3.43 percent at a sensor reading distance of 0 - 100 cm.
Current Status Of Global Engineering Education: Mini Review Ibham Veza; Yusrizal Yusrizal; Muhammad Idris; Nicky Rahmana Putra; Shuaibu Alani Balogun
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 2 (2023): September
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i2.8

Abstract

This mini review addresses global engineering education, its diversity, its challenges, and its geographical disparities. Engineering education is essential to sustainable development. The review stresses the need for interdisciplinary engineering that considers social, economic, and environmental concerns. Specialised engineering education packages are increasingly emphasising sustainability. This combination gives engineers the knowledge and abilities to create solutions that meet present needs while preserving resources and future generations. Despite its importance, this brief study highlights global engineering education challenges. Access to high-quality education is unequal, favouring pupils with strong math and science backgrounds. The lack of academic and student diversity may limit perspectives and innovation. Curriculum should also adapt to rapid technological change and industry needs. Internationalising engineering education is complicated by varied standards and teaching methods in different nations, making global comparison and collaboration difficult. The review compares educational systems in India, Malaysia, the US, the UK, China, Australia, Germany, and Indonesia. Regional variances are monitored by certification authorities to ensure compliance with local industry standards. The study emphasises the need for a flexible, well-planned curriculum. Optimal curriculum should align educational goals with industry-specific competencies, be flexible to meet technological developments, and be interdisciplinary. This aims not only meet student educational and career goals but also ensure a workforce with the skills and knowledge to address today's important concerns, particularly sustainability.
Perancangan dan Simulasi Sistem Absensi Mahasiswa Berbasis Mikrokontroler RFID dan NodeMCU ESP8266 Junindo Abdillah; Iswidodo Iswidodo; Zainal Arifin
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 2 (2023): September
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i2.9

Abstract

The attendance system or attendance recording is a separate problem in terms of practicality, especially if the attendance process is still done manually. One of the technological advancements is the Radio Frequency Identification (RFID) system. The RFID system is widely used as a security system device. This tool is designed by combining microcontroller work with RFID technology in a system. Data in the form of a unique code from an RFID tag is used as student data. Apart from being used as a media attendance device, RFID is added to its function as an automatic classroom access open device so that when students take attendance, the classroom door lock opens too which makes it easier for students and the campus. And also this tool is combined with the ESP-32 CAM camera module which is modified so that it can read a QR code containing student data in the form of numbers, even though the code reading speed is not as fast as a scanner but it can still function the same this will make it even easier when students take attendance when you forget to bring your attendance card.
Analisis Perbandingan Waktu Pakai Insert Die Berbahan Baja Perkakas SKD 11, ASSAB 88, dan SKH 51 untuk Produk Mur (NUT) Berbahan S45C Permana Andi Paristiawan
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 2 (2023): September
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i2.10

Abstract

The wear time of die inserts for nut products was studied in this research. The die insert material used is SKD 11, ASSAB 88 and SKH 51 tool steel, while the nut product material to be produced is S45C series carbon steel. These three die insert materials have been tested in the industry. Making nuts includes a dimensional test by measuring the dimensional tolerance of the nut and a service time test by looking at the number of products produced. This test is continued with a microhardness test on the inner side of the die insert. Use time for SKD 11 tool steel is 40,105 products with dimensional tolerance changed to 0.055 mm, ASSAB 88 tool steel is 110,703 products with dimensional tolerance changed to 0.053 mm, SKH 51 tool steel is 100,404 products with dimensional tolerance changed to 0.054 mm, micro hardness test tool steel shows that the deepest part of the die insert side is on average lower than the middle of the die insert. Insert dies made from SKD 11 have the shortest life, Insert dies made from SKH 51 have the longest life, and Insert dies made from ASSAB 88 have the highest life and are slightly higher than SKH 51. The use time for SKD 11 is two to three times, while the use time SKH 51 and ASSAB 88 are estimated to have been used more than three times.

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