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All Journal Jurnal Info Sains : Informatika dan Sains IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Metrik Serial Humaniora dan Sains
Arifiansah, Arifiansah
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Humanities Automotive Engineering Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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ANALISA WELD DEFECT PENGELASAN SMAW PADA PROSES FABRIKASI TANGKI AIR DENGAN MENGGUNAKAN MATERIAL BAJA 36 Azis Mubarok, Muhammad; Hermawan, Dudung; Arifiansah, Arifiansah
Metrik Serial Humaniora dan Sains Vol. 5 No. 1 (2024): April 2024
Publisher : Konsorsium Cendekiawan Indonesia

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Abstract

Dari pengamatan pada perusahaan PT.X dibidang kontruksi pembuatan tangki saat ini sedang terjadiweld defect(kasus cacat pengelasan). Berupa undercut dan porositypada plate konstruksi baja baik itu terjadi di badan tangki maupun pada penopang badan tangki. Tujuan dari penelitian ini adalah untuk meneliti penyebab munculnya weld defect pada hasil pengelasan tangki, serta memberikan solusi perbaikan. Penelitian ini dapat dilakukan dengan menganalisa bentuk hasil pengelasan, kemudian memperdalam analisa dengan melakukan pengujian berupa pengujian penetran test, magnetic particle test, yaitu pengujian yang digunakan untuk mengetahui potensi cacat pengelasan SMAW. Pada penelitian adalah pengelasan yang digunakan las SMAW adalah proses penyambungan logam yang menggunakan energi panas untuk mencairkan benda kerja dan elektroda. Penentuan besar arus yang digunakan 60A, 100A, 140A. Penentuan arus tersebut digunakan untuk perbandingan untuk menentukan arus yang baik digunakan. Setelah dilakukan pengujian dengan penetrant test dan magnetic particle test pada hasil pengelasan SMAW 1G pada spesimen arus 60A ditemukan indikasi kecacatan pengelasan sehingga dinyatan reject. Pada spesimen 2 arus 100A tidak ditemukan indikasi kecacatan pengelasan sehingga dinyatakan accepted. Pada spesimen 3 arus 140A terdapat indikasi kecacatan pengelasan sehingga dinyatakan reject.Hasil penelitian ini diharapkan dapat memberikan informasi yang lengkap tentang penyebab munculnya weld defect dan sekaligus dapat ditentukan langkah antisipasi yang baik dalam upaya pencegahannya.
Optimization Of Handcycle Design And Engineering Using The VDI 2221 Method Through An Anthropometric Approach For The Disabled Arifiansah, Arifiansah; Anwar, Sahrul
Jurnal Info Sains : Informatika dan Sains Vol. 14 No. 04 (2024): Informatika dan Sains , 2024
Publisher : SEAN Institute

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Abstract

People with disabilities are people who experience physical limitations either due to birth or accidents and so on, causing difficulty in walking and other activities. One of the obstacles for them is the existence of transportation to do work or just for daily mobility. And one solution to help people with disabilities in doing daily activities is a handcycle. Handcycle is driven by the arms, not the legs. Handcycle is generally used by people with disabilities who have limitations in using their legs. The research activity aims to produce a handcycle product that is friendly to people with disabilities with an anthropometric aspect approach where the bicycle can be moved either manually or electrically. The position of the seat and steering system can be adjusted according to needs. The seat arrangement (adjustable chair) and steering wheel arrangement (adjustable steering wheel) need to be planned in order to provide a sense of security and comfort to the user. The creation of this bicycle product design begins with identifying customer needs, designing a design concept, designing a shape, designing details and making the product. Where Product Design using the VDI 2221 method. A design method that uses a systematic approach to designing products and engineering systems. Through testing of handcycle products carried out by 2 people (users) with disabilities, it shows that users can adjust the distance of the body with the electric steering system and manual steering by adjusting the distance between the seat and steering wheel. The distance between the seat and the electric steering wheel is 726 - 838 (mm), the distance between the seat and manual steering wheel is 675 - 785 (mm), the height of the seat from the floor is 550 - 700 (mm) with a vehicle speed of 25 km/h if using an electric motor.
Analisis Pengaruh Parameter Pengelasan terhadap Heat Input pada Proses GTAW Multipass Pipa ASTM A36 Maryadi, Maryadi; Zulfikar, Muhammad; Arifiansah, Arifiansah; Farudin, Tugiman
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.423

Abstract

This research aims to evaluate heat input calculations in multipass Gas Tungsten Arc Welding (GTAW) on ASTM A36 steel pipe. The primary parameters investigated include current, voltage, and welding speed, incorporating a process efficiency factor (η = 0.7). The research methodology employs an experimental approach where heat input values are systematically calculated for each welding layer. The results indicate that increases in current and voltage are directly proportional to the rise in heat input, whereas an increase in welding speed is inversely proportional to it. Specifically, the highest heat input was observed in the root layer at 2.43 kJ/mm, followed by the filler layer (2.20 kJ/mm), capping layer (2.08 kJ/mm), and hot pass layer (2.00 kJ/mm). Metallurgically, these findings indicate that excessive heat input can trigger grain growth in the Heat Affected Zone (HAZ), while insufficient heat input can lead to lack-of-fusion defects. This study significantly contributes to understanding thermal energy distribution across multipass welding layers, providing a fundamental basis for determining optimal parameters to ensure high-quality weld joints.
Co-Authors Anwar, Sahrul Asyroflie, Farrel Azis Mubarok, Muhammad Farudin, Tugiman Fauziah, Dita Anggun Hermawan, Dudung Maryadi Maryadi Maryadi Maryadi Muhammad Zulfikar Nurwijayanti Sari, Mulyani Indah Wijaya, Adje