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All Journal Media Kesehatan Masyarakat Indonesia Journal of Welding Technology Miracle Journal Of Public Health (MJPH) KESANS : International Journal of Health and Science Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Jurnal Kesehatan Ibnu Sina (j-kis)
Gemala, Mega
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Chemistry Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health

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Journal : Journal of Welding Technology

 1 
Evaluation of magnetic particle inspection for optimizing welding quality in back gouging boom structure preparation in heavy machinery Aryswan, Adhe; Hasibuan, Apriansyah Sutan; Butar Butar, Hendra; Havwini, Tian; Gemala, Mega
Journal of Welding Technology Vol 7, No 1 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v7i1.5618

Abstract

This study investigates the effectiveness of Magnetic Particle Inspection (MPI) in optimizing welding preparation for the back gouging of boom structures in hydraulic mining shovels. The primary objective is to evaluate MPI's efficiency in detecting surface and near-surface defects during the pre-welding stage, thereby improving the overall welding quality of boom structures, which play a critical role in supporting heavy loads. MPI is utilized as an initial inspection method prior to Ultrasonic Testing (UT), enabling early detection of potential defects and reducing the likelihood of failures during subsequent UT evaluations. The study reveals the presence of linear and rounded discontinuities that may compromise weld integrity. By applying MPI early in the process, the need for rework during UT is minimized, resulting in cost and time savings. Furthermore, the findings of this study contribute to supporting two key organizational initiatives—People, Quality, Velocity, Cost (PQVC) and Built-in Quality (BIQ)—which aim to enhance both the efficiency and reliability of the welding process.
Heat input calculation in GTAW welding to obtain values according to pWPS Irawan, Benny Haddli; Syahidah, Bilqiz Bazilah; Gemala, Mega
Journal of Welding Technology Vol 7, No 1 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v7i1.5976

Abstract

This study aims to determine the ideal heat input to remain within the constraints set in the preliminary Welding Procedure Specification (pWPS). Heat input greatly influences weld quality, mechanical properties, and residual stresses, yet accurate determination during Procedure Qualification Record (PQR) trials remains challenging. This research involved field data collection during PQR testing using two coupon specimens made of ASTM B564 UNS-N06625 and ASTM B444 UNS-N06625 Grade 1 materials, each with dimensions of 11.07 mm in thickness and 60.3 mm in diameter. The Gas Tungsten Arc Welding (GTAW) process was applied in the 6G position. The acceptable heat input ranges in the pWPS are: Root (1.0–2.5 kJ/mm), Hot (1.0–2.6), Filler (0.69–1.39), and Cap (0.6–1.1). In coupon test 1, two passes failed: Pass 3 (1.51) and Pass 5 (1.43). In coupon test 2, three passes exceeded limits: Pass 4 (1.64–1.97), Pass 5 (1.42–1.72), and Pass 8 (1.19). To ensure compliance, recommended heat input parameters were formulated. For the root pass, use 97–103 A, 9–10 V, over 4 min 40 sec (2.04–2.41 kJ/mm). For the hot pass, use 98–106 A, 9–10 V, for 4 min 48 sec (1.85–2.23). The filler pass should use 79–97 A, 9–10 V, for 3 min 39 sec (1.01–1.37), and the cap pass 81–90 A, 9–10 V, for 3 min 17 sec (0.64–0.79). These parameters aim to achieve high-quality welds in line with pWPS specifications.
Tensile test and hardness test on FCAW-GS welding results of AB/EH36Z35 material in 3G downhill position Lubis, Robi Hardi; Gemala, Mega; Kamsyah, Domi; Fyona, Annisa; Saputra, Roni
Journal of Welding Technology Vol 6, No 1 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v6i1.5037

Abstract

Welding is a crucial aspect of the modern construction industry as it allows for efficient and reliable joining of metals. The purpose of this research is to evaluate the FCAW-GS welding process on AB/EH36Z35 material in the 3G downhill position. Additionally, the study aims to analyze the tensile and hardness test results of the welding. The research utilized the FCAW-GS welding method, with tensile testing conducted by the AWS D1.1/D1.1 M:2015 standard. Hardness testing was performed using the Vickers hardness test method with a test load of 10 Kgf, following the ASTM E92:2017 standard. The results of the tensile tests demonstrate that both specimens achieved high tensile strength. Furthermore, the hardness testing indicated no significant changes in material hardness in the HAZ and Line 3 areas. Consequently, this study's findings adhere to the quality standards outlined by AWS D1.1/D1.1M:2015 and ASTM E92:2017, making them a valuable reference for industrial welding processes
Co-Authors Adhe Aryswan Anggraini, Yeni Ari Wibowo Ariyanto, Nugroho Pratomo Baharudin, Budi Batubara, Ninda Hardina Budiman Budiman Butar Butar, Hendra Butar, Hendra Butar Cahyo Budi Nugroho Dewita, Trisna Dzulfiqar, Mohamad Alif Fajrin, Aulia Fyona, Annisa Hasibuan, Apriansyah Sutan Hendra Saputra Irawan, Benny Haddli Juangsa Putra, Lalu Giat Kamsyah, Domi Leksonowati, Nur Fitria Pujo Lubis, Robi Hardi Manurung, Meilani Mandhalena Mutiarani Mutiarani Muvariz, Mufti Fathonah Nuraliza, Nuraliza Nurul Laili Arifin, Nurul Laili Oktarizal, Hengky Pamungkas, Nurman PARISMA, WAN INTAN Purba, Adi Syahputra Puspita, Roza Rahman Hakim Rahmayni, Wanda Restu, Fedia Roni Saputra Roni Saputra, Roni Rosbandrio, Wowo Safitri, Khoerunnisa Saputra, Ihsan Siregar, James Sriyanto Sriyanto Sriyanto Stefani, Windy Suhandary, Evy Suryani, Maysita Risma Syahidah, Bilqiz Bazilah Tian Havwini Ulfah, Nurul Widiastuti, Hanifah Widodo Widodo