Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ju Hyung Ha"'
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 6, p 209 (2023)
This study examined the impact of vibration-assisted drilling (VAD) on hole quality and residual stress in Ti-6Al-4V ELI (Extra Low Interstitials) material. Ti-6Al-4V ELI possesses excellent mechanical properties but presents challenges in machining,
Externí odkaz:
https://doaj.org/article/6a8bf613926941ca8906d7cf02a3fffa
Publikováno v:
Journal of Biomechanical Engineering; Nov2024, Vol. 146 Issue 11, p1-14, 14p
Autor:
Yeon-Suk Jang, Hong-Seung Kim, Won-Jae Lee, Young Jun Choi, Mi-Seon Park, Hae-Yong Lee, Ju-Hyung Ha, Won Jun Lee
Publikováno v:
Journal of the Korean Crystal Growth and Crystal Technology. 26:89-94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da54d8fe1ec7604e39a0ab3362265b02
https://doi.org/10.6111/jkcgct.2016.26.3.089
https://doi.org/10.6111/jkcgct.2016.26.3.089
Publikováno v:
Cement and Concrete Composites. 65:1-10
The influences of four supplementary activators were investigated on Ca(OH)2-activated slag system. The additives significantly affected the (1) early strengths, (2) reaction degrees of slag, (3) types of hydration products, and (4) local structures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f96c5d6d83e144d68e589030ed5467d1
https://doi.org/10.1016/j.cemconcomp.2015.10.007
https://doi.org/10.1016/j.cemconcomp.2015.10.007
Publikováno v:
Proceedings of the ICE - Construction Materials. :1-7
Lightweight foamed mortars are produced through the addition of foaming agents into the cement blend, so that voids of different sizes are formed within the matrix, reducing the density of the material and therefore also its weight. However, the incr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18df04c0aec57c78dfcd4c156d86f98b
https://doi.org/10.1680/coma.15.00001
https://doi.org/10.1680/coma.15.00001
Publikováno v:
Journal of the Korea Concrete Institute. 27:245-252
As people have more interest in environment-friendly structures recently, many researchers are actively researching non-sintered cement in Korea and other countries. Non-sintered cement shows various characteristics of its reaction products and harde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::516a91d4e697b55a91dfc6a7fd2f0f1a
https://doi.org/10.4334/jkci.2015.27.3.245
https://doi.org/10.4334/jkci.2015.27.3.245
Publikováno v:
Journal of the Korean Crystal Growth and Crystal Technology. 25:56-61
The effects of the growth temperature on the properties of a-plane GaN epi-layer on r-plane sapphire by HVPE were studied, when the constant V/III ratio and the flow rate of HCl for the Ga source channel was fixed at 10 and 700 sccm, respectively. Ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5030dd546cb72220dd19212c1a3f430
https://doi.org/10.6111/jkcgct.2015.25.2.056
https://doi.org/10.6111/jkcgct.2015.25.2.056
Autor:
Hae-Yong Lee, Juan Wang, Hiroshi Harima, Young-Jun Choi, Won-Jae Lee, Jung-Gon Kim, Ju-Hyung Ha
Publikováno v:
Journal of the Korean Physical Society. 66:994-1000
The hydride vapor-phase epitaxy (HVPE) method was used to deposit high-quality InN layers on GaN inter-layer/sapphire (0001) structures that had been fabricated by using either the HVPE method or the metal-organic chemical-phase deposition (MOCVD) me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e77be56fd38ccecdc794fd201e786489
https://doi.org/10.3938/jkps.66.994
https://doi.org/10.3938/jkps.66.994
Publikováno v:
KSCE Journal of Civil Engineering. 19:1787-1794
Two structurally modified polycarboxylate (PC) copolymers were synthesized to explore the influence of structural modification with these polymers on the set-retarding of Portland cement. The dispersion ability of these polymers was eliminated by int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d098eb1c2a15e05468833fb97e0942c
https://doi.org/10.1007/s12205-014-1189-4
https://doi.org/10.1007/s12205-014-1189-4
Publikováno v:
Automation in Construction. 45:16-24
Heat of hydration raises the internal temperature of concrete and also induces thermal stress. Subsequently, thermal cracks occur when the tensile stress reaches the tensile strength of concrete. Researchers of this study developed a new automated cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::635f2495728f9fc556c9d555d73af9f4
https://doi.org/10.1016/j.autcon.2014.04.014
https://doi.org/10.1016/j.autcon.2014.04.014