Gary Geraldus Sinaga, . (2026) ANALISIS PENGARUH SUHU PREHEAT TERHADAP DISTORSI GAS METAL ARC WELDING (GMAW) PADA SAMBUNGAN SINGLEPASS V BUTT JOINT BAJA ASTM A36. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.
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Abstract
The Gas Metal Arc Welding (GMAW) welding process has the potential to cause distortion due to an imbalance in heat distribution during welding, which can affect the quality, dimensional precision, and structural integrity of components. One method commonly used to control distortion is the application of preheat temperature before the welding process. This study aims to analyze the effect of variations in preheat temperature on the magnitude of distortion in GMAW welding of ASTM A36 steel through a numerical simulation approach using ANSYS as well as experimental validation. The validation results show that the simulation model is able to represent thermal behavior and distortion well, indicated by an average temperature error of 5.89% and a distortion error of 8.46%. The preheat temperature variations tested include 28°C, 50°C, 100°C, and 150°C. The results show that increasing preheat temperature is able to reduce distortion significantly, with maximum deformation decreasing from 1.2181 mm without preheat, to 0.89118 mm at a temperature of 150°C. This study concludes that the application of preheat is effective in reducing GMAW welding distortion, with the optimal preheat temperature range being 100–150°C, thereby improving the quality and accuracy of welding results.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Additional Information: | [No.Panggil: 2110311068] [Pembimbing: Armansyah] [Penguji 1: Muchamad Oktaviandri] [Penguji 2: Riki Hendra Purba] |
| Uncontrolled Keywords: | GMAW, Preheat, Finite Element Method, Distortion |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin (S1) |
| Depositing User: | GARY GERALDUS SINAGA |
| Date Deposited: | 27 Jan 2026 04:30 |
| Last Modified: | 27 Jan 2026 04:30 |
| URI: | http://repository.upnvj.ac.id/id/eprint/42219 |
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