A review of operational modal analysis techniques for in-service modal identification
Vibrations are the root cause of many mechanical and civil structure failures. Dynamic
characteristics of a structure must be extracted to better understand structural vibrational …
characteristics of a structure must be extracted to better understand structural vibrational …
[HTML][HTML] Understanding and managing identification uncertainty of close modes in operational modal analysis
Close modes are much more difficult to identify than well-separated modes and their
identification (ID) results often have significantly larger uncertainty or variability. The …
identification (ID) results often have significantly larger uncertainty or variability. The …
Closely spaced modes identification through modified frequency domain decomposition
CX Qu, TH Yi, HN Li, B Chen - Measurement, 2018 - Elsevier
In practical engineering, power spectral density is always used to identify structural dynamic
properties by picking peak points. However, the peaks in the spectral curve are not easy to …
properties by picking peak points. However, the peaks in the spectral curve are not easy to …
A target-free video structural motion estimation method based on multi-path optimization
The vibration data are quite important for structural health monitoring (SHM). This paper
proposed a novel method, to adaptively estimate video motions of the structure in subpixel …
proposed a novel method, to adaptively estimate video motions of the structure in subpixel …
Frequencies and damping ratios of bridges through Operational Modal Analysis using smartphones
S Castellanos-Toro, M Marmolejo, J Marulanda… - … and Building Materials, 2018 - Elsevier
Abstract Seismic Force Assessment in structural design of bridges requires a good
estimation of the fundamental period. Estimated periods, using current methodologies in …
estimation of the fundamental period. Estimated periods, using current methodologies in …
Estimating small structural motions from multi-view video measurement
The phase-based estimation, as one type of target-free methods, can estimate small
structural motions from video data. However, in the two-dimensional (2D) domain, this …
structural motions from video data. However, in the two-dimensional (2D) domain, this …
Estimating small structural motions based on sparsity enforcement
This paper proposed a novel, efficient method to estimate challenging small structural
motions from noisy video. To eliminate the phase limitation, ill‐posed problem, and high …
motions from noisy video. To eliminate the phase limitation, ill‐posed problem, and high …
Influence of system changes on closely spaced modes of a large-scale concrete tower for the application to structural health monitoring
C Jonscher, L Liesecke, N Penner, B Hofmeister… - Journal of Civil …, 2023 - Springer
Concrete steel towers are increasingly being used for onshore wind turbines. The lower part
consists of separated segmented concrete rings connected with dry joints. Due to slight …
consists of separated segmented concrete rings connected with dry joints. Due to slight …
Field measurement and wind tunnel experimental investigation of a supertall building with closely spaced modes under typhoon Mangkhut
This paper presents the analysis of full-scale measurement of the Leatop Plaza (303 m)
under a super typhoon (ie, Mangkhut), during which field data such as wind speed, wind …
under a super typhoon (ie, Mangkhut), during which field data such as wind speed, wind …
Structural flexibility identification via moving-vehicle-induced time-varying modal parameters
Y Tian, J Zhang - Journal of Sound and Vibration, 2020 - Elsevier
To overcome the limitation of existing methods only identifying basic dynamic properties of
bridge structures, a moving vehicle strategy was proposed to identify more meaningful …
bridge structures, a moving vehicle strategy was proposed to identify more meaningful …