Experimental Study of Residual Stresses in Hybrid Laser Arc and Submerged Arc-Welded 10-mm-Thick Low-Carbon Steel Plates
| Autor: | Jeffrey R. Bunn, Michael Joachim Andreassen, Zhenzhen Yu, Jens Henrik Nielsen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Low-carbon steel grade S355ML
Materials science Polymers and Plastics Carbon steel 02 engineering and technology Welding engineering.material Submerged arc welding Neutron diffraction law.invention ASTM A0572 (standard) Arc (geometry) Residual stresses 0203 mechanical engineering Residual stress law Distortion SDG 14 - Life Below Water Stress corrosion cracking business.industry Metals and Alloys technology industry and agriculture Structural engineering respiratory system 021001 nanoscience & nanotechnology Offshore wind power 020303 mechanical engineering & transports Mechanics of Materials Ceramics and Composites engineering Hybrid laser-arc welding 0210 nano-technology business Offshore structures |
| Zdroj: | Andreassen, M J, Yu, Z, Bunn, J R & Nielsen, J H 2019, ' Experimental Study of Residual Stresses in Hybrid Laser Arc and Submerged Arc-Welded 10-mm-Thick Low-Carbon Steel Plates ', Materials Performance and Characterization, vol. 8, no. 4 . https://doi.org/10.1520/MPC20180134 |
| DOI: | 10.1520/MPC20180134 |
| Popis: | Offshore structures are constantly exposed to a multihazard marine environment that threatens their structural integrity. This imposes a high risk for extensive structural failures while various deterioration mechanisms may degrade the available capacity of the structures. Thus, no reliable decisions can be reached regarding design, operation, and survivability of the structures unless a deep comprehension of their fatigue performance is available, including welding-induced residual stresses. In particular, the continuous increase in size of the weldments for the offshore wind industry needs special attention with regard to welding-induced residual stresses, as they can reduce fatigue life, promote distortion, and contribute to stress corrosion cracking. Thus, the current design methods and increased structural dimensions as well as new design and manufacturing methods need to be inspected, understood, and optimized. Related to this, there is a growing need for evaluation of the effect of welding methods with various heat input density distributions. This article deals with the influence of welding method on the welding-induced residual stresses in 10-mm-thick low-carbon structural steel plates. The residual stresses are investigated in hybrid laser-arc welded and submerged arc butt-welded steel plates by means of experimental temperature profile measurements and neutron diffraction measurements and in accordance with existing production procedures. The residual stresses were measured at three different depths in the plates. The goal of the analysis is to gain a comprehensive understanding of the distribution and development of residual stresses in relation to the welding method for better control of the residual stresses and distortion. The repeatability of the neutron diffraction measurements is also investigated and reported in this article. |
| Databáze: | OpenAIRE |
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