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Young-Cheol Kim, Dong-Hyeop Kim and Sang-Woo Kim
To achieve the commercialization of electric vertical takeoff and landing (eVTOL) aircrafts, which have recently garnered attention as the next-generation means of transportation, objective certification based on rigorous procedures is essential. With th...
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Dong-Heon Kim, Jong-Geum Lee, Jin-Hong Kwon, Sang-Woo Kim and Hang-Bae Jun
In this study, we aimed to develop a novel method to quantify residual colorants in the water supply using a spectrocolorimeter. Cross-tests of color and turbidity showed that standard color solutions of 1?50 color units had a turbidity of ?0.094 nephelo...
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Se-Yeong Oh, Junho Jeong, Sang-Woo Kim, Young-Uk Seo and Joosang Youn
Along with the recent development of artificial intelligence technology, convergence services that apply technology are undergoing active development in various industrial fields. In particular, artificial intelligence-based object recognition technologi...
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Dong-Hyeop Kim, Young-Cheol Kim and Sang-Woo Kim
Airworthiness standards of Korea recommend verifying structural safety by experimental tests and analytical methods, owing to the development of analysis technology. In this study, we propose a methodology to verify the structural safety of aircraft comp...
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Sang-Woo Kim
This study proposes a method for predicting the deflection of shear-critical reinforced concrete (RC) beams. Shear deterioration of shear-critical RC beams occurs before flexural yielding. After shear deterioration occurs in the shear-critical RC beams, ...
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Sang-Woo Kim and Kil-Hee Kim
This study proposes a relatively simple steel damper with high energy dissipation capacity. Three types of steel dampers were evaluated for structural performance. The first damper with U-shape had two vertical members and a semicircular connecting membe...
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Kyung-Soon Park, Sang-Woo Kim and Seong-Hwan Yoon
The efficient operation of a passive solar house requires an efficient ventilation system to prevent the loss of energy and provide the required ventilation rates. This paper proposes the use of ?breathing architectural members? (BAMs) as passive natural...
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Daehyun Kim, Keunhwi Koo, Jae Jin Jeong, Taedong Goh and Sang Woo Kim
A second-order discrete-time sliding mode observer (DSMO)-based method is proposed to estimate the state of charge (SOC) of a Li-ion battery. Unlike the first-order sliding mode approach, the proposed method eliminates the chattering phenomenon in SOC es...
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