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So-Yeon Baek and Jong-Ho Nam
Welding, a key technology in the shipbuilding industry, is mostly performed by hand, owing to the complex structure and shape of production blocks. This manual welding requires a variety of working postures, which have become an important determinant of ...
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Simon Kissling, Elie Talon Louokdom, Frédéric Biya-Motto, Bernard Essimbi Zobo and Mauro Carpita
DC link back-to-back converters are widely used in industrial applications. This interest comes from their power factor unity capability on the utility grid and to maintain regulated output parameters, thanks to the decoupling between the grid and the lo...
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Balázs Varbai, Rita Kormos, Kornél Májlinger
Pág. 68 - 73
In this paper the effects of active fluxes during gas metal arc welding (GMAW) were investigated. Eight different types of active fluxes, with different oxygen content, and MnO ? SiO2 flux mixtures were applied to the surface in 20 vol.% steps befor...
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Yuxuan Xia, Jingxia Yue, Jiankang Lei, Ke Yang and Yordan Garbatov
The welding residual stress re-distribution behavior during fatigue crack propagation in butt-welded high-strength steel plates for ship construction is investigated based on experimental test results and numerical analyses. The specimens? initial weldin...
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Donghan Woo and Mitsuru Kitamura
The accurate numerical prediction of welding deformation is important to improve the structural safety of ships and offshore structures in heavy industries. The precise reflection of the real working condition in the numerical prediction is an essential ...
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Darmadi B. Djarot, Femiana Gapsari, Osmar Buntu Lobo and Firman Mangasa Simanjuntak
Stress corrosion cracking (SCC) is known as a major factor that should be considered in the assessment of welding joint structure integrity. Despite the promising and wide application of dissimilar metal joints, the currently available SCC mitigation tec...
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Juvenilson Costa Damascena, Lidiane Maciel Costa, Jean Robert Pereira Rodrigues, Louriel Oliveira Vilarinho, Gedeon Siva Reis, Carmem Célia Francisco do Nascimento
Pág. 347 - 353
Certain techniques, comprising machining and GTAW dressing, have been used in the weld bead edge (region of the welded joint between the weld metal and the base metal) to increase the fillet radius of the region by reducing the stress concentrator factor...
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Sadiq Gbagba, Lorenzo Maccioni and Franco Concli
In the shipbuilding, construction, automotive, and aerospace industries, welding is still a crucial manufacturing process because it can be utilized to create massive, intricate structures with exact dimensional specifications. These kinds of structures ...
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Jinfeng Liu, Guoqing Feng, Jiaying Wang, Huilong Ren, Wei Song and Panpan Lin
Welding defects are known to cause crack propagation and reduce structural fatigue performance. Based on the Paris theory of fracture mechanics, research is conducted on evaluation methods for analyzing fatigue crack propagation by adopting random loads ...
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Y. P. Boronenko,I. O. Filippova
Pág. 121 - 129
Purpose. The work is aimed to identify the reasons for the significantly higher coefficient of the empty weight of 1520 mm gauge cars in comparison with the freight cars in North America and to give recommendations for reducing the empty weight of freigh...
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