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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
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Search results for , issue "Vol. 1 No. 2 (2023): September" : 6 Documents clear
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.
Kajian Fisis Optimalisasi Daya Bateray Lithium dalam Pengaruh Deformasi Safaruddin A Prasad; Jufra Jufra; Akhiruddin Maddu
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.v1i2.11

Abstract

Simulations have been carried out of equal power for lithium batteries with one-way diffraction grating deformation using magnetic induction coils which are converted into heat energy to heat a certain volume of water. The heating time was observed from the initial temperature of 30 degrees Celsius to the final temperature of 100 degrees Celsius for each coil length L. Using multiple linear regression analysis, a power change ratio of 0.95 was obtained. This means that the battery power will increase by 0.05 or 5 percent if it is treated with a compressive force to the limit of elasticity. This is possible because Lithium has a Young's modulus of 4.9 GPa, a shear modulus of 4.2 GPa, and a bulk modulus of 11 GPa.
Analisa Pengecoran Logam dengan Pengujian Mekanik dan Metalografi Handi Handi; Iwan Setiono; Waris Sudaryanto
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.v1i2.12

Abstract

The Ball Valve Axle is an axle that functions as a handle for the balls on HPD and HPS type hydrants produced by a metal foundry factory in Tegal, Central Java. This Ball Valve Axle is made from gray cast iron which consists of 2.746 percent carbon, 0.247 percent silicon, 0.708 percent manganese, 0.001 percent phosphorus, 0.058 percent sulfur, 0.007 percent chromium, 0.046 percent nickel, 0.172 percent molybdene, 0.000 percent vanadium, tungsten 0.007 percent, copper 0.122 percent, aluminum 0.003 percent, titan 0.003 percent, boron 0.00 percent, tin 0.026 percent, lead 0.000 percent and the element iron itself. In the casting process, porosity has occurred which causes the cast product to fail and cannot be used. To determine the condition of the failed object, tests are carried out, namely mechanical testing and metallographic testing. Mechanical tests carried out include material wear testing, material hardness with a hardening process through a heat treatment process at a temperature of 870 degrees Celsius which is then tempered at temperatures of 100 degrees Celsius, 200 degrees Celsius, 300 degrees Celsius and 400 degrees Celsius. Wear level The casting yield is 0.0001 mm2/kg and the hardness level is 166,360 kg/mm2. This cast iron experiences high hardness after being tempered at 100 degrees Celsius where the hardness becomes 418.347 kg/mm2 but experiences a decrease in hardness if we temper it to 400 degrees Celsius where the hardness becomes 270.813 kg/mm2.

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