Article Per Year (5 Year)
p-Index From 2020 - 2025
3.582
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan Teknologi dan Kejuruan INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) JURNAL PENDIDIKAN TAMBUSAI Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Automotive Experiences Jurnal Vokasi Mekanika ALSYS : Jurnal Keislaman dan Ilmu Pendidikan MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Asian Journal of Science, Technology, Engineering, and Art
Putra, Randi Purnama
Universitas Negeri Padang
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

Published : 24 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : MASALIQ: Jurnal Pendidikan dan Sains

 1 
Pengaruh Variasi Arus terhadap Kekuatan Bending pada Pengelasan Plat A36 Menggunakan Las SMAW (Shielded Metal Arc Welding) Chandra, Shandika; Waskito, Waskito; Jasman, Jasman; Putra, Randi Purnama
MASALIQ Vol 3 No 6 (2023): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i6.2078

Abstract

The use of A36 plate in the construction sector is closely related to connecting or welding between metals because it is useful in assembling a product to lighten human work. Examples of the use of A36 plate in the construction sector can be seen in trellis workshops, where this plate is often used as a support or support in making a balcony or canopy. However, sometimes workers do not understand how strong the plate is after being treated with welding, often they just guess at the durability of the plate, so this can cause various kinds of losses. Starting from damage to work objects to causing work accidents that result in loss of life. Therefore, this research examines the effect of variations in current strength on bending strength. This test was carried out on A36 plate material which was subjected to welding effects with varying currents of 80A, 100A, 120A and 140A. and a bending test was carried out using the ASTM E190-14 test standard, the results of this test were that at a current of 80A the bending strength value was 161.173 N/〖mm〗^2. Current 100A with a value of 229.851 N/〖mm〗^2. Current 120A with a value of 270.374 N/〖mm〗^2. And a current of 140A with a value of 374.839 N/〖mm〗^2. The test object with a current strength of 140A is the test object that has the highest bending strength value.
Analisis Aerodinamika Rancangan Body City Car dengan Penambahan Spoiler Belakang Menggunakan Ansys Fluent Ananda, Yoga Rizki; Putra, Randi Purnama; Fernanda, Yolli; Qalbina, Fitrah
MASALIQ Vol 5 No 2 (2025): MARET
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i2.4976

Abstract

An increase in the number of fossil fuel vehicles leads to increased energy consumption and exhaust emissions, which have a negative impact on the environment. One way to improve fuel efficiency is to optimize vehicle aerodynamic design, especially through the addition of a rear spoiler. This study aims to analyze the effect of city car body design with the addition of a rear spoiler on vehicle aerodynamic characteristics, such as drag coefficient, lift coefficient, and the ratio between the two. The research method used is numerical simulation with Computational Fluid Dynamics (CFD) using Ansys Fluent 2024 R1 Student Version software. The simulation was performed on a 3D city car model with airflow velocity variations of 10 m/s, 20 m/s, and 30 m/s. The data obtained were analyzed using grid independency analysis techniques to ensure the accuracy of the simulation results. The results show that the addition of a rear spoiler is able to reduce the lift coefficient thereby improving vehicle stability, although there is a slight increase in the drag coefficient as the airflow velocity increases. The negative ratio between the lift coefficient and drag coefficient indicates that the lift is downforce, which contributes to vehicle stability at high speeds. A suggestion from this research is the optimization of the spoiler shape to further reduce the drag coefficient without compromising vehicle stability. Further research can be conducted by testing variations in spoiler design and lighter materials for better aerodynamic efficiency.
Co-Authors Ahmad Arif Ahmad Arif Akbar, Arifki Ananda, Yoga Rizki Andre Kurniawan Andre Kurniawan Andrizal Andrizal Aprinaldi, Aprinaldi Arafat, Andril Ariansyah Ariansyah, Ariansyah Asnil Asnil Aswanto, Trio Harinaldi Aziz, Wildan Abdul Bahrul Amin Bambang Sudarmanta Budi Syahri Chandra, Shandika Dinul, Fadhilah Ikhsan Dori Yuvenda Erzeddin Alwi Fauza, Anna Niska Febri Prasetya Fitrah Qalbina Ghozali, Rahmatul Harmanto, Dani Jamaludin Jamaludin Jasman Jasman Junil Adri Krismadinata Krismadinata Kurniawan, Badri M. Yasep Setiawan Martias Martias Martias Martias Milana Milana Muji Setiyo Nurdin Hendri Oki Muraza Phonepasith Phongdala Purwantono Purwantono Purwantono, Purwantono Rahadian Zainul Rahmat, Febri Refdinal, Refdinal Remon Lapisa Roza Febrianti Sri Rizki Putri Primandari Tin, Chau Trung Toto Sugiarto Tun, Hla Myo Vernando, Willy Hardi Wagino Wagino Wagino Wanda Afnison Waskito Waskito, Waskito Widia, Mirta Wira, Aski Wulansari, Rizky Ema Ya, Kyaw Zay Yolli Fernanda Yufrizal Yufrizal Zainal Abadi