Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Jaesun Lee"'
Autor:
Boris I, Jaesun Lee
Publikováno v:
Actuators, Vol 13, Iss 3, p 106 (2024)
In modern days, low-frequency vibration is still challenging to suppress due to its high vibrational energy. A typical suppression method is to increase the object’s mass to reduce the amplitude of the vibration, but such a way is unsuitable in man
Externí odkaz:
https://doaj.org/article/657fa858e96e4ce685eda82148777922
Autor:
Boris I, Jaesun Lee
Publikováno v:
AIP Advances, Vol 13, Iss 10, Pp 105032-105032-7 (2023)
This article presents an analysis of torsional wave propagation in phononic crystal-based metamaterials. Such structures hold great promise as tools for wave manipulation. The unit cell of the presented structure was meticulously examined to obtain d
Externí odkaz:
https://doaj.org/article/5d52471cf8394e4e896d1a9dd4513ee8
Autor:
Boris I, Jaesun Lee
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Periodic structure is very useful and powerful tool for the wave manipulation. Many researchers report about elastic guided wave focusing, filtering based on a bandgap, wave steering. wave transformation. However, for the wave transformation pays too
Externí odkaz:
https://doaj.org/article/40204762212442de9e7fc3e331fd9144
Autor:
Jaesun Lee, Aslam Mohammed
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
The concentration of the wave energy around certain features such as bends, stiffeners, and welds in plate-like structures has been identified as feature-guided waves (FGW). In practice, these features can be useful for assessing defects in or near t
Externí odkaz:
https://doaj.org/article/269e31e885604b7b93bd07a7d97d5eea
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Recently, record-breaking heatwaves due to global warming and abnormal weather have occurred in the summer, and sales and usage of air conditioners are rapidly increasing. Air conditioners are widely used all over the world and are recently expandi
Externí odkaz:
https://doaj.org/article/4e738dd923fd44029e9a7c73e4818228
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Periodic structure is useful and powerful tool for the wave manipulation. The development of design and analysis of periodic structures using traditional methods (analysis of eigenfrequencies by the finite element method) takes quite a lot of time.
Externí odkaz:
https://doaj.org/article/bb119c85ebc841f3b322e2a9790f914f
Autor:
Jaesun Lee, Sunil Kumar Sharma
Publikováno v:
Applied Sciences, Vol 13, Iss 20, p 11274 (2023)
Railway infrastructure plays a crucial role in the efficient operation of transportation systems across the globe [...]
Externí odkaz:
https://doaj.org/article/d8643a66af41438c98096a0aba573434
Publikováno v:
Materials, Vol 16, Iss 12, p 4241 (2023)
The nonlinear ultrasonic evaluation technique is useful for assessing micro-defects and microstructure changes caused by fatigue or bending damage. In particular, the guided wave is advantageous for long-distance testing such as piping and plate. Des
Externí odkaz:
https://doaj.org/article/d57b644760f1405e9fec48c7364139c2
Publikováno v:
Applied Sciences, Vol 13, Iss 9, p 5252 (2023)
This paper analyses the dynamic behavior of a rail vehicle using experimental and simulation analysis on a multi-rigid–flex body model. The mathematical models are developed considering the car body, bogie frame, and wheel axle for rail vehicles of
Externí odkaz:
https://doaj.org/article/be4fb7aaab3e4f638720cc5ea0ee22cb
Autor:
Chihyeok An, Hyeyeon Chon, Wanrim Ku, Sunho Eom, Mingyu Seok, Sangha Kim, Jaesun Lee, Daesung Kim, Sanghyuk Lee, Hoonsup Koo, Hyunjung Cho, Seungyun Han, Juik Moon, Miil Kang, Kihyun Ryu
Publikováno v:
Microorganisms, Vol 10, Iss 9, p 1792 (2022)
Bile acids are synthesized from cholesterol and play an important role in regulating intestinal microflora. The different degrees of hydrophobicity and acidity of individual bile acids may affect their antimicrobial properties. We examined the antimi
Externí odkaz:
https://doaj.org/article/87e5649b857d4addb1e89dca5bcc3800