Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Ryoonhan Kim"'
Publikováno v:
Metals, Vol 14, Iss 11, p 1270 (2024)
Despite the dismantling structures that are submerged to significant depths of water during the decommissioning of nuclear power plants, there is limited research on deep-water laser cutting processes. A self-designed pressurized chamber was used in
Externí odkaz:
https://doaj.org/article/eb84dd1c2c634d1fb5545e7ad91be449
Publikováno v:
Metals, Vol 13, Iss 5, p 916 (2023)
In this study, a fiber laser at a wavelength of 1070 nm with different beam shapes (spot, dough-nut, and spot-wobble) was used to weld thin 316 L stainless steel foils. The welding speed was varied from 400 to 1000 mm/s in the absence of shielding ga
Externí odkaz:
https://doaj.org/article/8d0bd27f278d45e88ac88300dc4e8df8
Publikováno v:
Applied Sciences, Vol 12, Iss 19, p 9574 (2022)
While dismantling nuclear power plants, the reactor vessel internal is cut underwater using mechanical and thermal cutting. In laser thermal cutting, assist gas must be used to remove melted metal; consequently, a large number of radioactive aerosols
Externí odkaz:
https://doaj.org/article/f301c76164fa4c968543a9fe9302084a
Autor:
Ryoonhan Kim, Jeong Suh, Dongsig Shin, Kwang-Hyeon Lee, Seung-Hoon Bae, Dae-Won Cho, Won-Geun Yi
Publikováno v:
Metals, Vol 11, Iss 10, p 1516 (2021)
Laser shock peening creates compressive residual stress on the surface of the material, reducing stress corrosion cracking and increasing fatigue life. FE simulation of laser shock peening is an effective way to determine the mechanical effects on th
Externí odkaz:
https://doaj.org/article/ad7d16e43a5a4ea18315af207ff3495d
Autor:
Dong-Hyun Kim, Dae-Won Cho, Yeong-Kwan Jo, Jeong Suh, Kwang-Deok Choi, Ryoonhan Kim, Seokyoung Ahn
Publikováno v:
Journal of Welding and Joining. 39:427-434
Plasma arc cutting is a thermal cutting method that melts and removes the material by projecting an arc heat source onto the cutting part of material. In the case of cutting thick plate, plasma arc piercing is performed before plasma arc cutting for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6fffb5dd1f057cd3d6ce65fd8e968b9
https://doi.org/10.5781/jwj.2021.39.4.11
https://doi.org/10.5781/jwj.2021.39.4.11
Publikováno v:
Processes; Volume 10; Issue 12; Pages: 2743
In this study, the laser cutting characteristics were analyzed according to the shape of the back side of the specimen, and the laser cutting characteristics were compared according to the thickness of the edge (10 mm, 20 mm, and 30 mm). A Yb-YAG las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53644f90486c1a51cc707467b09e745d
https://doi.org/10.3390/pr10122743
https://doi.org/10.3390/pr10122743