Results 261 to 270 of about 474,164 (345)

Output-only modal parameter identification of structures by vision modal analysis

Journal of Sound and Vibration, 2021
Abstract Testing of structures by non-contact and possibly-remote video camera measurement has emerged as a promising topic in engineering fields. This paper develops a vision modal analysis framework for output-only structural modal parameter identification using vision measurement. The establishment of this framework is mainly twofold.
Zhong-Rong Lu, Guanfu Lin, Li Wang
semanticscholar   +4 more sources

Vision-based modal parameter identification for bridges using a novel holographic visual sensor

Measurement: Journal of the International Measurement Confederation, 2021
Noncontact monitoring using holography can be quite useful in vision-based structural health monitoring owing to its advantages in terms of data visualization and real-time applications.
Zhixiang Zhou, Shuai Shao, Guojun Deng, Yanmei Gao, Shaorui Wang, Xi Chu   +5 more
semanticscholar   +3 more sources

Damping characteristics of single-layer aluminum alloy reticulated spatial structures based on improved modal parameter identification method

Thin-Walled Structures, 2021
An improved identification method is proposed for the modal parameter identification of multi-modal vibration attenuation signals based on the analytical mode decomposition and the particle swarm optimization.
Xiaonong Guo, Jindong Zhang, Shaojun Zhu, Xiaoqun Luo, Hongjun Xu   +4 more
semanticscholar   +3 more sources

Interference reduction of high-energy noise for modal parameter identification of offshore wind turbines based on iterative signal extraction

Ocean Engineering, 2019
An iterative noise extraction and elimination method is proposed, to solve the difficulty of modal parameter identification caused by contaminated high-energy components in measured signals.
Fushun Liu, Shujian Gao, Huawei Han, Z. Tian, Peng Liu   +4 more
semanticscholar   +3 more sources

Interval-oriented eigensystem realization algorithm and its modification for structural modal parameter identification with bounded uncertainties

Journal of Sound and Vibration
Chen Yang, Xinhua Xu, Xiaohang Wang, Ziyao Fan   +3 more
semanticscholar   +3 more sources

Variational mode decomposition based modal parameter identification in civil engineering

Frontiers of Structural and Civil Engineering, 2019
Mingjie Zhang, Fuyou Xu
semanticscholar   +3 more sources

Modal parameter identification in civil structures via Hilbert transform ensemble with improved empirical wavelet transform

Journal of Vibration and Control, 2023
To overcome the inaccurate frequency band division in empirical wavelet transform (EWT) induced by high noise and modulation edge band, this study proposes an improved EWT (IEWT) and applies it to operational modal analysis (OMA) in civil structures. The
Shiqiang Qin, Jian Tang, Jiacheng Feng, Yunlai Zhou, Fei Yang, M. Wahab   +5 more
semanticscholar   +1 more source

An improved Hilbert–Huang transform method for modal parameter identification of a high arch dam

Applied Mathematical Modelling, 2021
The vibration signal of a high arch dam flow discharge structure under the excitation of water flow is difficult to extract because the vibration signals are weak, low-frequency, and easily submerged by noise.
Bowen Wei, Bin Xie, Huokun Li, Zimeng Zhong, Yun You   +4 more
semanticscholar   +1 more source

An improved filtering method based on EEMD and wavelet-threshold for modal parameter identification of hydraulic structure

Mechanical Systems and Signal Processing, 2016
Y. Zhang, J. Lian, Fang Liu
semanticscholar   +3 more sources

Modal-parameter identification and vibration-based damage detection of a damaged steel truss bridge

Engineering Structures, 2016
K. Chang, Chul‐Woo Kim
semanticscholar   +3 more sources