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구종현,배재호,김상우,김진섭 한국복합신소재구조학회 2023 복합신소재구조학회논문집 Vol.14 No.5
In this study, we investigate the flexural bonding behavior of glass fiber reinforced polymer (GFRP) reinforced bars in a beam application. The GFRP reinforced bars were designed without end hooks. We fabricated beam specimens and subjected them to four-point bending tests. The parameter under consideration was the nominal diameter of the GFRP, with three different diameters: D13, D16, and D19. The results demonstrated a significant increase in the flexural strength of the beam when comparing D13 specimens to D16 and D19 specimens, with improvements of approximately 24.17% and 45.92%, respectively. This indicates that the strength of the specimens increases as the nominal diameter of the GFRP reinforcement increases. Notably, there was a proportional similarity in performance with respect to the nominal diameter in contrast to tensile strength.
이준휘,구종현,황시운,민선민,안상정,노용한,박성하 한국물리학회 2012 Current Applied Physics Vol.12 No.4
We report the structural and functional stabilities of artificially synthesized DNA ultra-thin films. Fully covered DNA ultra-thin films on a silica substrate were fabricated by the silica-assisted growth method and those samples were then incubated in various chemicals and physical conditions. The DNA ultra-thin films showed high maintainability under those harsh conditions and these results would aid to facilitate the use of artificial DNA ultra-thin films in advanced research areas such as biophotonics and bioelectronics.