Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Hyun-guk Kim"'
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1590 (2024)
The deployable reflector antenna based on the synthetic aperture radar is a satellite component that consists of a unit structure in the form of a folded reflector. During the launch process, this satellite antenna is in the stowed condition to impro
Externí odkaz:
https://doaj.org/article/3116951c9a6c428b935c22c708d19432
Publikováno v:
Aerospace, Vol 10, Iss 9, p 774 (2023)
In the launch environment, satellites are subjected to severe dynamic loads. These dynamic loads in the launch environment can lead to the malfunction of the payload, or to mission failure. In order to improve the structural stability of satellites a
Externí odkaz:
https://doaj.org/article/b242d171a09b422a83fd0aeb9cafadaa
Publikováno v:
IEEE Access, Vol 9, Pp 104227-104241 (2021)
An optimal filter design method for a virtual mechanical impedance (VMI) control system is presented in this report. Existing passive methods for reducing machinery noise have limited applications because of weight reduction, cooling, and appearance
Externí odkaz:
https://doaj.org/article/94f83f0c10174facbdd0fddfcd7b8b70
Autor:
Hyun-Guk Kim, Seong-Cheol Kwon, Kyung-Rae Koo, Sung-Chan Song, Youngjoon Yu, Youngbum Song, Yeon-Hyeok Park, Hyun-Ung Oh
Publikováno v:
Aerospace, Vol 9, Iss 11, p 642 (2022)
In a launch environment, all satellites are subjected to severe random vibration and acoustic loads owing to rocket separation, airflow, and injection/combustion of the fuel. Structural vibrations induced by mechanical loads cause the malfunction of
Externí odkaz:
https://doaj.org/article/bd53600593644c6da2b0ecaae885c89e
Publikováno v:
Applied Sciences, Vol 12, Iss 20, p 10245 (2022)
In this paper, we propose horizontal active noise control (ANC) using two-dimensional wave field information alone. By reducing the control space to a horizontal plane, the number of microphones and speakers was considerably reduced compared with ANC
Externí odkaz:
https://doaj.org/article/51c9a9ca03f049d3a34f3a7db0cedb0a
Publikováno v:
Materials & Design, Vol 183, Iss , Pp - (2019)
An enclosure panel is widely used in industrial applications. The panel under a dynamic loading excites the surrounding air medium and noise is radiated into the acoustic space. The radiated sound can be suppressed by having changes in the structure.
Externí odkaz:
https://doaj.org/article/07ad199e0b0d4a42bd64aae33f3dc45e
Publikováno v:
Applied Sciences, Vol 11, Iss 10, p 4530 (2021)
In this study, an interconnected metamaterial was proposed to suppress flexural vibration. The interconnected metamaterial can improve the manufacturing and installation processes in terms of convenience because it can be fabricated in the form of a
Externí odkaz:
https://doaj.org/article/ce0ffe06aab54916b1600da24e64c4cd
Autor:
Onyu Jeon, Myeong-Jae Lee, Joon-Suk Ryu, Yuyoung Youn, Kyeongrae Koo, Hyun-Guk Kim, Semyung Wang
Publikováno v:
Transactions of the Korean Society for Noise and Vibration Engineering. 33:181-192
Publikováno v:
Journal of Mechanical Science and Technology. 36:3313-3327
Publikováno v:
Journal of Mechanical Science and Technology. 35:973-978
In modern society, the use of washing machines has increased owing to increased interest in personal hygiene. Over the years, the performance of washing machines has been enhanced, whereas the noise/vibration of the machine has increased. Most existi