Study on lamellar tearing generated by corner joint welding in box column of ultrathick plate

Citation
Hs. Bang et al., Study on lamellar tearing generated by corner joint welding in box column of ultrathick plate, SCI TEC W J, 6(4), 2001, pp. 213-219
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Metallurgy
Journal title
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
ISSN journal
1362-1718 → ACNP
Volume
6
Issue
4
Year of publication
2001
Pages
213 - 219
Database
ISI
SICI code
1362-1718(2001)6:4<213:SOLTGB>2.0.ZU;2-8
Abstract
In an attempt to reduce the risk of lamellar tearing during welding of ultr athick plates, the present study has evaluated the susceptibility to lamell ar tearing of steel structures in relation to welding stress rather than me tallurgical properties, and evenutally attempted to determine the optimum g roove shape and welding procedure by computer simulation based on the finit e clement method. Based on the simulation, it has been identified that cont rolling the shape of the deposited weld metal in the anticipated position o f the occurrence of lamellar tearing is the most favourable method of preve nting lamellar tearing by minimising welding residual stress and strain. Ow ing to the difference in weld deposited area, the cooling rate for the part ial penetration condition is more rapid than for full penetration. Furtherm ore, in terms of welding residual stress, the full penetration condition is preferable to the partial penetration condition.