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All Journal Sinergi Jurnal Teknik Mesin Teknomekanik International Journal of Innovation in Mechanical Engineering and Advanced Materials IRA Jurnal Pengabdian Kepada Masyarakat
Rikko Putra Youlia
Universitas Mercu Buana
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Heat Mapping and Plastic Strain Radius Modeling of Dual-Tool Friction Stir Welds 6061 Aluminum Alloy Plate Using FEM Rikko Putra Youlia; Diah Utami; Dedik Romahadi; Tang Yishuang
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 6 No. 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i2.28235

Abstract

This study investigates the effects of Dual-Tool Friction Stir Welding (DT-FSW) parameters on the weld quality of 8 mm thick 6061 aluminum alloy plates, specifically focusing on the elimination or minimization of the "pass-overlap zone" that’s a gap typically observed at the mid-section of the weld cross-section resembling characteristics of the Heat-Affected Zone (HAZ). To address ongoing debates regarding the optimal joint performance concerning this overlap, symmetric increases in the dimensions of both FSW tools were implemented to analyze resultant temperature fields and plastic strain adaptations at the weld interfaces. Simulation visualizations were conducted with tool density variations at intervals of 0.2 mm and 0.4 mm. Results indicate that increasing tool density, thereby reducing the distance between tool surfaces, leads to a decrease in peak temperatures generated during welding. This reduction in temperature correlates with a more uniform distribution of plastic strain rates across all layers of the material—upper, middle, and lower—with the leading edge exhibiting the most significant improvement in strain uniformity. Conversely, during the stabilization phase, a decrease in tool density (S) results in a reduction of the maximum equivalent plastic strain rate. These findings suggest that careful adjustment of tool density in DT-FSW processes can enhance weld quality by promoting more uniform mechanical and thermal properties across the joint.
Pengenalan Robotika Yang Ergonomi Untuk Siswa SMK 10 Nopember Jakarta Diah Utami; Puspita Dewi Widayat; Rikko Putra Youlia
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i3.325

Abstract

Robotics is a field that combines engineering, electronics, and programming to design and control robots. In the introductory robotics program at SMK 10 Nopember Jakarta, students will learn the basics of robotics, including the main components of robots, how automated systems work, and programming to operate robots. Forty-four students attended. The goal of this activity was to increase students' understanding of robotics technology, encourage creativity in technological innovation, and provide practical skills applicable to the automation and technology industries. With project-based learning, students will have the opportunity to design and build a simple robot. Students successfully built the robot, but some were unable to due to time constraints, so we provided video tutorials for them to work on outside of school hours.
Co-Authors Aberham Genetu Feleke Alina Alina Alina, Alina Anggara, Fajar Dedik Romahadi Diah Utami Diah Utami, Diah Dimas Aji Pangestu Fajar Anggara Feleke, Aberham Genetu Hadi Pranoto Hadi Pranoto Hifdzul Luthfan Habibullah Himawan S. Wibisono Hui Xiong Ilhamullah, Ilhamullah Irfan Evi Nugroho Muhammad Imran Muhammad Luthfi Nafis Nafis, Muhammad Luthfi Nugroho, Irfan Evi Nur Indah Nur Indah, Nur Pangestu, Dimas Aji Puspita Dewi Widayat Rahmatullah, Rizky RR. Ella Evrita Hestiandari Satryo Budi Utomo Tang Yishuang Wiwit Suprihatiningsih Yang Xiawei Yishuang, Tang