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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 6 Documents
 1 
Search results for , issue "Vol. 1 No. 1 (2023): Maret" : 6 Documents clear
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.

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