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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Pendidikan Teknik Mesin Undiksha
Budi Darsono, Febri
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Pengaruh Penggunaan Magnet Eksternal dan variasi arus Pada Pengelasan TIG Terhadap Struktur Mikro, Kekerasan dan Kekuatan Tarik Baja Karbon Rendah : The Effect of Using External Magnets and Current Variations in TIG Welding on the Microstructure, Hardness and Tensile Strength of Low Carbon Steel Paundra, Fajar; Rakha Yudanta, Faturrizky; muhyi, andul; Pujiyulianto, Eko; Budi Darsono, Febri
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 1 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i1.73571

Abstract

External magnetic fields can improve the quality of TIG welding results. This research aims to determine the effect of external magnetic fields in the TIG welding process. The material used in this research is SS400 steel. The welding process uses TIG (Tungsten Inert Gas) with varying currents of 70 A, 80 A, 90 A and 100 A and uses additional 2 Neodymium external magnets. Testing of welding results in the form of macro, micro structure, Vickers hardness test and tensile test. The macro structure test results show several welding defects such as porosity, incomplete penetration, underfill and distortion. Meanwhile, the results of microstructure testing show that the base metal contains ferrite and pearlite structures. The HAZ section contains ferrite, pearlite and martensite types of structures. The highest tensile test results were found in TIG welding connections without using a magnet with a current of 100 A, namely 368.234 MPa. The highest hardness test results were found in TIG welding joints using a magnet with a current of 100 A, namely 176,712 HVN. The use of external magnets can produce large penetration during the welding process and produce good welded joints. On the other hand, this can have a negative impact on the welding results if the distance between the electric arc and the material is not correct, and the torch does not move according to the welding path.
Sosialisai Kendaraan Listrik Berbasis Baterai (KLBB) bagi driver online Setiyawan, Andri; Budi Darsono, Febri; Abdurrahman, Abdurrahman; Firdaus, Doni Yusuf; Faksi, Sanli; Iman, Muhammad Syamsuddin Nurul
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 1 (2024): March
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i1.21610

Abstract

Abstrak Penggunaan kendaraan listrik merupakan salah satu solusi untuk menekan peningkatan polusi udara yang disebabkan oleh emisi karbon khususnya yang terjadi di kota-kota besar Indonesia. Berdasarkan observasi lapangan maka perlu diadakan kegiatan Edukasi dan Sosialisasi Penerapan Kendaraan Listrik Berbasis Baterai Bagi Driver Online di Kota Semarang Dalam Upaya Green Energy Transportation. Metode yang digunakan adalah penerapan secara langsung. Fokus kegiatan ini adalah: (1) Aspek Pengetahuan Kendaraan Listrik Berbasis Baterai, (2) Aspek Perawatan Kendaraan Listrik Berbasis Baterai: meliputi pelatihan perawatan berkala pada Kendaraan listrik Berbasis Baterai. Terselenggaranya Kegiatan Pengabdian Edukasi dan Sosialisasi Penerapan Kendaraan Listrik Berbasis Baterai Bagi Driver Online di Kota Semarang Dalam Upaya Green Energy Transportation. Fokus pengabdian pada pengetahuan driver online terkait pengetahuan dasar sistem kendaraan listrik. Kata kunci: driver online; kendaraan listrik; sosialisasi Abstract Using electric vehicles is one of the solutions to reduce the increase in air pollution caused by carbon emissions, especially in big cities in Indonesia. Based on field observations, it is necessary to hold an Education and Socialisation activity on the Application of Battery-Based Electric Vehicles for Online Drivers in Semarang City to Green Energy Transportation. The method used is direct application. The focus of this activity is (1) Knowledge aspects of battery-based electric vehicles, (2) Maintenance aspects of battery-based electric vehicles, including periodic maintenance training on battery-based electric vehicles. It was implementing Education and Socialisation of Battery-Based Electric Vehicle Implementation for Online Drivers in Semarang City to Green Energy Transportation. The service focuses on the knowledge of online drivers related to basic knowledge of electric vehicle systems. Keywords: online driver; electric vehicle; socialisation
Characteristics of Profile Pin Variation in HDPE Friction Stir Welding to Mechanical Properties of Materials Agus Wahyu Setiawan; Budi Darsono, Febri; Kriswanto; Ramadhani, Riski
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 2 (2025): December 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i2.15638

Abstract

Friction Stir Welding (FSW) is one of the Solid-State Welding processes, which joins materials below their melting point by continuously rubbing two workpieces together to generate heat. The FSW process heavily relies on the use of pin profiles, which play a crucial role in forming the weld joint, as they directly affect material flow in the weld zone and heat distribution during the welding process. This research aims to evaluate the mechanical properties of FSW joints made using different pin profile variations, in order to achieve high-quality welds. The study applies a descriptive statistical analysis approach, utilizing tensile testing, flexural testing, hardness testing, and macro photography. The material used in this research is High-Density Polyethylene (HDPE), with three types of pin profiles: triangular, threaded cylindrical, and grooved cylindrical. The welding parameters are kept constant: feed rate of 25 mm/min, spindle speed of 930 RPM, plunge depth of 3.84 mm, and tilt angle of 0°. The results show that the threaded pin profile produced the highest average values: hardness of 59.5 SHD, tensile strength of 11.5 MPa, and flexural strength of 22.4 MPa. In contrast, the grooved pin profile showed the lowest average values: hardness of 57.83 SHD, tensile strength of 4.99 MPa, and flexural strength of 4.22 MPa. The mechanical strength test results were influenced by weld defects observed through macro images. These weld defects significantly impacted the mechanical properties and demonstrated that pin profile geometry plays a vital role in heat generation through friction and in controlling the material flow dynamics, which directly determine the structural integrity and mechanical performance of the weld joint.
Co-Authors Abdurahman Abdurrahman Agus Wahyu Setiawan Andri Setiyawan Faksi, Sanli Firdaus, Doni Yusuf Iman, Muhammad Syamsuddin Nurul Kriswanto muhyi, andul Paundra, Fajar Pujiyulianto, Eko Rakha Yudanta, Faturrizky Ramadhani, Riski