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Kekuatan Puntir dan Porositas Hasil Sambungan Las Gesek AlMg-Si dengan Variasi Chamfer dan Gaya Tekan Akhir Tyagita, Dicky Adi; Irawan, Yudy Surya; Suprapto, Wahyono
Jurnal Rekayasa Mesin Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (734.707 KB)

Abstract

Friction welding is the most suitable method for joining aluminum alloys. Aluminum alloys have limitations heat to concentrate only in weld area when used arc or gas welding. That causes it is has good thermal conductivity. The parameters that influence on friction welding are friction time, compressive force, upset force, rotational speed, and chamfer angle. The purpose of the research was to know influence of chamfer angle and upset force on the Al-Mg-Si. The chamfer angles variated 0, 15°, 30°, 45° and upset force variated 157 kgf, 185 kgf and 202 kgf. Specimens were friction welded with rotation speed of 1600 rpm, compressive force 123 kgf for 120 seconds, and upset force variation by 157, 185, 202 kgf for 120 seconds. In addition torsion and porosity testing were also performed on friction welding product. Results showed that specimens with a chamfer angle 15 ° in various upset force has maximum shear strength, so were on specimens with a chamfer angle 15 ° has minimum percentage of porosity in various upset force.Keywords : shear strength, friction welding, chamfer angle, upset force, porosity and Al-Mg-Si
STATIC LOADING ANALYSIS ON THREE-WHEELED ELECTRIC VEHICLE FRAME USING SOLIDWORKS Azhar, Faruq Avero; Suranto, Dwi Djoko; Zain, Alex Taufiqurrohman; Karimah, Cahyaning Nur; Tyagita, Dicky Adi; Pratama, Aditya Wahyu; Sulistiono, Dety Oktavia; Nuruddin, Mochammad; Nari, Mochammad Irwan
ROTOR Vol 16 No 2 (2023)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v16i2.44222

Abstract

Analisis menggunakan metode Finite Element menghasilkan data secara menyeluruh dan detail. Respon fisik sistem terhadap beban di beberapa titik mampu terbaca. Hal tersebut sangat berguna dibidang engineering, terutama pada kendaraan dan analisis struktur. Penelitian ini bertujuan untuk mencari nilai tegangan, regangan maksimal serta displacement dengan pembebanan statis dari struktur rangka pad akendaraan listrik roda tiga. Kendaraan listrik roda tiga yang digynakan diharapkan memiliki kapasitas beban angkut yang besar sehingga simulasi ini sangat diperlukan. Hasil simulasi menunjukkan bahwa nilai tegangan maksimum pada rangka sasis ketika diberi beban 1500 N adalah 0,0244 MPa serta 5,26×10-13 dan 1,27×10-7 untuk regangan minimum dan maksimum. Sedangkan nilai displacement yang didapat adalah 6,208×10-4 mm. Dari hasil tersebut dapat dismpulkan bahwa struktur rangka sudah cukup baik dalam menahan beban yang diberikan.
Development of Robotics Learning Modules based on IoT and ESP32 Rofi'i, Ahmad; Afianah, Nuzula; Kautsar, Syamsiar; Pratama, Aditya Wahyu; Winadi, Aditya Wahyu; Purnomo, Fendik Eko; Putri, Salsabila Liandra; Tyagita, Dicky Adi; Nari, Mochammad Irwan; Afriansyah, Faisal Lutfi
International Journal of Technology, Food and Agriculture Vol. 2 No. 3 (2025): October (In Progress)
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v2i3.5885

Abstract

This study aims to develop a transporter robot as a learning tool for elementary and secondary school students to introduce them to robotics. The robot features a differential drive system and a lifting arm akin to a forklift system. The robot is controlled using an ESP32 microcontroller and connected to an Android application through a Firebase cloud database. Utilizing an IoT platform, the training can be conducted online, allowing students to control the robot remotely while it remains at the training location. The transporter robot is designed to provide an interactive and hands-on learning experience in robotics, enabling students to grasp fundamental concepts in robotics, programming, and control systems. The differential drive system offers excellent maneuverability, while the lifting arm allows the robot to perform tasks such as lifting and moving objects, adding functional aspects to the learning process. Test results indicate that the robot performs well under online control, with fast and accurate responses to commands from the Android application. The use of Firebase ensures stable and real-time communication between the robot and the application. This implementation not only enhances the accessibility of robotics training but also enables the development of students' STEM skills in a more flexible and affordable manner. The study concludes that an ESP32-based transporter robot with online control via an Android application and Firebase cloud database can be an effective and innovative learning tool. This tool aims to enhance students’ STEM skills -especially in programming, control systems, and mechanical design- through interactive, real-world applications.
DIMENSIONAL ACCURACY OF 3D PRINTED DOG BONE STRUCTURES Nugroho, Wendy Triadji; Tyagita, Dicky Adi; Wahyudiono, Arif; Suranto, Dwi Djoko
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The current study provides a comprehensive discussion regarding statistical analysis of dimensional accuracy comprising thickness, gauge section width, circularity and cylindricity for 3D printed polylactic acid (PLA) specimens according to the dimensional specifications of ASTM D638 standard type IV, which are optimally built via fused deposition modelling (FDM). This work focuses on investigating the primary influences of 3D printing parameters as input factors consisting of nozzle temperature, infill density as well as layer height on dimensional deviation of the printed specimens. The confirmation tests are implemented in this study to ensure the experimental work's reproducibility. The resulting data shows that layer height dominates the effects, namely 80, 88, 81 and 81% on thickness, gauge section width, circularity and cylindricity. Meanwhile, nozzle temperature gives the second considerable influence on dimensional deviation of printed specimens, around 16, 9, 16 and 17%. Conversely, infill density promotes a negligible effect on the dimensional error of such specimens. Furthermore, the confirmation tests indicate that the experimental works are highly reproducible. These findings can contribute significantly to the additive manufacturing technology for PLA material, especially when the printed specimens are used for specific applications in biomedical, engineering and aerospace fields.