The effects of robot welding and manual welding on the low- and high-cycle fatigue lives of SM50A carbon steel weld zones

Han, Changwan; Yang, Changhwan; Kim, Han-Jong; Park, Seonghun

doi:10.1177/1687814019828266

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The figure is taken from the website https://www.kranendonk.com/branches/shipbuilding/ (accessed date 14 May 2022). However, the fatigue behavior of the welded joints, fabricated using RW, was investigated in a few studies, such us [162], where the fatigue responses of SM50A carbon steel T-shaped welded joints, fabricated from robotic and manual welding techniques, were compared.…”

Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

“…The use of WAAM technology for the manufacturing of ships parts such as a bulbous bow, ruder and ship propeller, were analyzed and proposed in [163]. Recently, a 3D However, the fatigue behavior of the welded joints, fabricated using RW, was investigated in a few studies, such us [162], where the fatigue responses of SM50A carbon steel T-shaped welded joints, fabricated from robotic and manual welding techniques, were compared.…”

Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

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Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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Welded joints are widely used in many sectors and represent the main joining technique also in the marine industry. The welded joints are sites of high stress concentrations and are subject to severe conditions for the marine environment. The design of marine welded joints has to consider the effects from wave loads, ship motions and loading/unloading operations and corrosion effects. The aim of this scientific work is to discuss about the state of the art of the standards and the approaches for predicting the fatigue life of welded joints used for the marine industry. Several approaches are examined in order to provide an overview and highlight the advantages and limitations of each method. Furthermore, recent advances in welding of dissimilar metals and autonomous welding are considered.

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Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

Section: Future Developments Of Welded Joints In Marine Structuresmentioning

confidence: 99%

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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Orbital-Based Automatic Multi-Layer Multi-Pass Welding Equipment for Small Assembly Plates

Cai,

Yu,

et al. 2024

Applied Sciences

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To address the technical challenges, production quality issues, and inefficiencies caused by the heavy reliance on traditional manual processing of small assembly plates in the shipbuilding industry, this paper presents the design and analysis of a track-based automatic welding device. This equipment provides a solution for achieving batch and continuous welding in the field of automatic welding technology. The design section includes the mechanical design of the equipment’s core mechanisms, the design of the operating systems, the development of visual scanning strategies under working conditions, and the formulation of multi-layer and multi-pass welding processes. The analysis section comprises the static analysis of the equipment’s mechanical structure, kinematic analysis of the robotic arm, and inspection analysis of the device. Compared with manual welding, multi-layer and multi-pass welding experiments conducted using the equipment demonstrated stabilized welding quality for small assembly plates. Under the conditions of single plates with different groove positions and gaps, when the gap was 4 mm, processing efficiency increased by 7.35%, and processing time was reduced by 10.2%; when the gap was 5 mm, processing efficiency increased by 10.7%, and processing time decreased by 7.39%. The welding formation rate for the overall processing of single plate panels and web grooves increased by 11.48%, total material consumption decreased by 13.4%, and unit material consumption decreased by 13.5%. For mass production of small assembly plates of the same specifications, processing time was reduced by 16.7%, and there was a 41.4% reduction in costs. The equipment effectively addresses the low level of automation and heavy dependence on traditional manual processing in the shipbuilding industry, contributing to cost reduction and efficiency improvement.

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The effects of robot welding and manual welding on the low- and high-cycle fatigue lives of SM50A carbon steel weld zones

Cited by 2 publications

References 14 publications

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Orbital-Based Automatic Multi-Layer Multi-Pass Welding Equipment for Small Assembly Plates

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