Zobrazeno 1 - 10
of 725
pro vyhledávání: '"Taik Lee"'
Publikováno v:
Sensors, Vol 22, Iss 18, p 6762 (2022)
The frequency response function (FRF) in the frequency domain is a black box used to collect physical information and to indicate the modal characteristics of a dynamic system. Analyzing the collected FRF data through the impact hammer test, dynamic
Externí odkaz:
https://doaj.org/article/37983186e32846cfa4becb14fc261e80
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 17 (2021)
This article presents an optimal sensor placement algorithm for modifying the Fisher information matrix and effective information. The modified Fisher information matrix and effective information are expressed using a dynamic equation constrained by
Externí odkaz:
https://doaj.org/article/f16b44905b684234b8b9b5dce2b00bde
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 17 (2021)
Optimal sensor placement is used to establish the optimal sensor quantity and layout. In this study, the minimum quantity and locations of measurement sensors were assumed to satisfy the constraint conditions of the optimal sensor placement. A set of
Externí odkaz:
https://doaj.org/article/9caa3a71b4034ff8b1d37379c77ca6c6
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
Sensors, Vol 22, Iss 10, p 3778 (2022)
This study presents iterative optimal sensor placement (OSP) techniques using the modal assurance criterion (MAC) and the effective independence (EI) algorithm. The algorithms use the proper orthogonal mode (POM) extracted from the frequency response
Externí odkaz:
https://doaj.org/article/683785160f76496085e03b468a373802
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
Polyurea coating helps improve the ductility and toughness of structural members. A fiber-reinforced polyurea (FRPU) composite provides high load-carrying capacity and is applied by simply spraying it onto the member surface. Unlike existing reinforc
Externí odkaz:
https://doaj.org/article/35aa1d99e79f4b29ba1e1b75272a2dee
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
Sensors, Vol 22, Iss 2, p 589 (2022)
Sensor measurements of civil structures provide basic information on their performance. However, it is impossible to install sensors at every location owing to the limited number of sensors available. Therefore, in this study, we propose an optimal s
Externí odkaz:
https://doaj.org/article/d61bc1c8e3e24f44ab3dcefd6a7854cb
Autor:
Aram Kim, Kyu-Sung Lee, Tae Beom Kim, Hyung Joon Kim, Eun Sang Yoo, Jong-Hyun Yun, Duk Yoon Kim, Suk Gun Jung, Jun Taik Lee, Jung Man Kim, Cheol Kyu Oh, Ju Hyun Shin, Seung Hyun Jeon, Seong Ho Lee, Chang Hee Han, Dong Hwan Lee, Hyuk Jin Cho, Myung-Soo Choo
Publikováno v:
Investigative and Clinical Urology, Vol 58, Iss 1, Pp 42-47 (2017)
Purpose: To identify incidence and risk factors of recurrence after discontinuation of successful antimuscarinic therapy in patients with overactive bladder (OAB). Materials and Methods: This was a prospective, multicenter trial. Patients who had a
Externí odkaz:
https://doaj.org/article/5f548f6075634e7c99831045ca5608f8
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
Advances in Mechanical Engineering, Vol 11 (2019)
Model-based responses rarely coincide with the actual responses owing to modeling and measurement errors, deterioration of structural performance, and presence of damages in the structure. The parameter matrices should be updated for successful subse
Externí odkaz:
https://doaj.org/article/30178c9d437b426bb0dcbbf53ca7eb14
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
This study considers the structural vibration control by a lever-type tuned mass damper (LTMD). The LTMD has a constraint condition to restrict the motion at both ends of the lever. The LTMD controls the dynamic responses at two locations combining t
Externí odkaz:
https://doaj.org/article/85d776024ad04039aafba15060997e4e
Autor:
Eun-Taik Lee, Hee-Chang Eun
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
Damage detection methods can be classified into global and local approaches depending on the division of measurement locations in a structure. The former utilizes measurement data at all degrees of freedom (DOFs) for structural damage detection, whil
Externí odkaz:
https://doaj.org/article/9b85f15a0bdd409d8a19c033569814ec