Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Gyubaek An"'
Publikováno v:
Metals, Vol 14, Iss 1, p 39 (2023)
As the shipbuilding industry has emerged from an extended recession, orders for high-value-added ships, such as LNG and ultra-large container ships, are increasing. For ultra-large container ships, high-strength, thick materials are applied. Because
Externí odkaz:
https://doaj.org/article/941c2302dcb7478dadc8a8913c807d6a
Publikováno v:
Metals, Vol 13, Iss 1, p 25 (2022)
Using high-strength steel for offshore structures with a yield stress of 500 MPa, this study evaluated the distribution characteristics of welding residual stress in the thickness direction under the influence of constrained conditions during welding
Externí odkaz:
https://doaj.org/article/60c7bcad82fa4b5fa6b6048951933520
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 11, Iss 2, Pp 858-864 (2019)
The increasing demands of lifting lugs can be attributed to the rapid advancement of shipbuilding and offshore-structure production technologies and an exponential increase in the size of the block units of ship structures. Therefore, to ensure safet
Externí odkaz:
https://doaj.org/article/8e121fea07f84fa1b5574547118a03b4
Publikováno v:
Metals, Vol 12, Iss 4, p 654 (2022)
When evaluating the safety of steel structures, welding residual stress is used as the secondary load and if there is any restraint, the yield stress of the base material is used for secondary load, regardless of the size of the restraint. Of late, a
Externí odkaz:
https://doaj.org/article/5880617f356b426e9dc350be2743ec6f
Publikováno v:
Metals, Vol 12, Iss 3, p 405 (2022)
For the construction of ecofriendly ships, fuels such as liquefied natural gas (LNG), ammonia, and hydrogen are being discussed as alternatives. LNG fuel has recently been applied to shipbuilding. The most important aspect of an LNG propulsion ship i
Externí odkaz:
https://doaj.org/article/98adca82511c4a299a01a62b7bacf082
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 10, Iss 2, Pp 129-140 (2018)
A residual stress generated in the steel structure is broadly categorized into initial residual stress during manufacturing steel material, welding residual stress caused by welding, and heat treatment residual stress by heat treatment. Initial resid
Externí odkaz:
https://doaj.org/article/01a20053e3d44a1bbb698c26a3eba9ed
Publikováno v:
Metals, Vol 11, Iss 12, p 2047 (2021)
High-manganese austenitic steel was developed to improve the fracture toughness and safety of steel under cryogenic temperatures, and its austenite structure was formed by increasing the Mn content. The developed high-manganese austenitic steel was a
Externí odkaz:
https://doaj.org/article/1016420c5691444f9adbff0ad8bfd0a3
Autor:
Jeong-ung Park, Gyubaek An
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 9, Iss 3, Pp 315-325 (2017)
The design dimension may not be satisfactory at the final stage due to the welding during the assembly stage, leading to cutting or adding the components in large structure constructions. The productivity is depend on accuracy of the welding quality
Externí odkaz:
https://doaj.org/article/bf8a83bd6a32464c98638754e291bbef
Autor:
Park Jeongung, Gyubaek An
Publikováno v:
Metals, Vol 11, Iss 4, p 642 (2021)
The steel run-off plates attached at the start and end of a weld usually have the same material, shape, and groove as the base metal according to the rules for designing and constructing ship steel structures. However, rather than using the same grad
Externí odkaz:
https://doaj.org/article/f08c1affa9054cd19f7ec48f150e4fc7
Publikováno v:
Applied Sciences, Vol 10, Iss 23, p 8613 (2020)
Unstable fractures generally occur in brittle materials under low-temperature service conditions. Toughness and welding residual stress are the main factors that should be evaluated when defining a brittle crack propagation path. In this study, a rai
Externí odkaz:
https://doaj.org/article/7dc979c60f5f42c58b342a10d47af7d3