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All Journal Indonesian Journal of Fundamental Sciences Journal Of Chemical Process Engineering Jurnal Polimesin ACCELERATION: Multidisciplinary Research Journal
Muhammad Aqdar Fitrah
Akademi Komunitas Industri Manufaktur Bantaeng
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences

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Deteksi Kekasaran Permukaan Nugget Weld Dengan Menggunakan Aplikasi Terhadap Hasil Pengelasan Rsw pada Plat Stainless Steel 304 Muhammad Aqdar Fitrah; Hermin Hardyanti Utami
Indonesian Journal of Fundamental Sciences Vol 9, No 1 (2023): Article in Press
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijfs.v9i1.37227

Abstract

Resistance Spot Welding (RSW) is welding process that is widely used in the automotive industry such as the manufacture of vehicle bodies. This study aims to measure the level of roughness in stainless steel grade 304 with the RSW Welding method. In this study, Gwyddion software was used to measure the roughness of stainless steel grade 304. This study used variations in electric current, which are 5kA and 7kA, with a pressure of 3 bar and 9 seconds with 100 x 25 mm for the size. Furthermore, for each electric current there are 3 specimens and macro photo tests are carried out then the roughness values for 5kA is 153 µm, 151 µm, and 150 µm. Moreover, the rough values of 7kA is 133 µm, 135 µm and 101 µm. From the results, it was found that the higher of welding current, the smoother of the roughness of the nugget weld. This is because the heat that enters the nugget weld undergoes a good maturation process.
Karakterisasi Inklusi Terak Pada Pengelasan Pipa SA 106 Grade B Menggunakan Mikroskop Elektron Pemindai Muhammad Aqdar Fitrah; Mardin; Muhammad Balfas; Hermin Hardyanti Utami; Muhammad Taufiq Thahir; Haeruddin Hafid
Journal of Chemical Process Engineering Vol. 9 No. 1 (2024): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i1.725

Abstract

Pentingnya peran Mikroskop Elektron Pemindaian (SEM) dalam menganalisis pengelasan pipa, khususnya dalam konteks penggunaan material SA 106 Grade B seamless untuk aplikasi industri dengan suhu tinggi, sangatlah signifikan. Pengelasan pipa memiliki peran vital dalam berbagai industri yang dihadapkan pada lingkungan ekstrem. Faktor utama yang mempengaruhi integritas dan kinerja sistem dalam kondisi operasi yang ekstrim adalah kualitas antarmuka las dan struktur mikro dari material tersebut. Artikel ini menguraikan prinsip dasar operasi SEM dan penggunaannya dalam mengobservasi fenomena terak (slag) pada antarmuka las pipa yang terbuat dari material SA 106 Grade B. Penjelasan difokuskan pada proses SEM yang menggunakan aliran elektron untuk memindai permukaan sampel dan mengungkap informasi tentang struktur mikroskopis melalui interaksi antara elektron dan material. Pengamatan SEM menghasilkan pemahaman mendalam tentang karakteristik terak yang muncul selama proses pengelasan pipa, termasuk pembentukan fase silikat dan oksida, dengan keberadaan oksida besi menunjukkan bahwa terak tidak sepenuhnya terhapus. Pemindaian pada perbesaran 24x memberikan gambaran awal tentang distribusi ukuran, sedangkan pada perbesaran 150x menyoroti keberadaan butiran pada permukaan inklusi terak yang menumpuk seperti buih. Identifikasi butiran ini menjadi fokus penting karena dapat memengaruhi integritas struktural dan kualitas antarmuka las pipa.
Design and manufacturing of Welded Vacuum Testing (WVT) tool Ariyanto Ariyanto; Muhammad Aqdar Fitrah; Salma salu; Muh Nurul Haq Amaluddin; Arman Latif; Rahmat Alwi; Halim Halim
Jurnal POLIMESIN Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.5024

Abstract

To ensure the quality of welded joints in the hull area, welding testing is very important and must be carried out. But unfortunately, currently the quality testing process of welded joints was still limited to penetrant tests and lime tests. The purpose of this study was to obtain a portable welding testing machine that was able to obtain fairly accurate test results on hull welding defects using a vacuum system. The research method is experimental by involving data collection through field experiments, testing is carried out with the resulting weld defect research subjects and the length of testing time on 1G and 3G position welding. The results of the study by compared tests among Welded Vacuum Testing (WVT) machines, Magnetic Particle tests (MP), and Penetrant Tests (PT). The three experiments detected leaking weld defects, spark sparks, pinholes, overlaps, and undercuts. For test results with machines made, welding defects that were successfully detected were leaks in the 1G position welding workpiece and undercut in the 3G position welding workpiece. Air bubbles at a vacuum pressure of 0.2 bar are detected, meaning that there is a defect in the welded joint. This tool can be used in bilge testing.
DESIGN AND FABRICATION OF CUTTING-EDGE PLASTIC BOTTLE CAP PRESS TOOLS FOR A GREENER FUTURE Muhammad Aqdar Fitrah; Syaiful Syaiful; Hermin Hardyanti Utami
Acceleration: Multidisciplinary Research Journal Vol. 2 No. 01 (2024): Acceleration: Multidisciplinary Research Journal
Publisher : PT Akselerasi Karya Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste is the result of human activity which puts great pressure on the environment, especially when waste is not collected and ends up piling up in open places and water bodies. Waste management can generally be done by burning it, throwing it into ditches, landfilling it and most often throwing it into rivers. This design aims to deal with plastic waste by recycling it. The method used is a melting system using a microwave, while pressing uses a hydraulic jack. The use of this tool is to recycle the waste and process it into something that has use and sale value. The results of this bottle cap recycling tool convert plastic bottle cap waste into furniture material, in the form of coasters. The jack used in this tool has a capacity of 10 tons. In tests carried out on 125g bottle caps, they melted for 60 minutes at a temperature of 250°C.
Co-Authors ariyanto ariyanto Arman Latif Haeruddin Hafid Halim Halim Hermin Hardyanti Utami Mardin Muh Nurul Haq Amaluddin Muhammad Balfas Muhammad Taufiq Thahir Rahmat Alwi Salma Salu Syaiful Syaiful