DIC-Based Operational Modal Analysis of Bridges [PDF]
Advances in Civil Engineering, 2021 A new method has been proposed to identify the natural frequencies and mode shapes of a bridge model, in which the digital image correlation (DIC) technique is used to track the dynamic displacement.
Gongfa Chen +4 more
doaj +2 more sources
Sparse Component Analysis Using Time-Frequency Representations for Operational Modal Analysis [PDF]
Sensors, 2015 Sparse component analysis (SCA) has been widely used for blind source separation(BSS) for many years. Recently, SCA has been applied to operational modal analysis (OMA), which is also known as output-only modal identification.
Shaoqian Qin, Jie Guo, Changan Zhu
doaj +2 more sources
Automated Operational Modal Analysis for Rotating Machinery Based on Clustering Techniques [PDF]
Sensors, 2023 Many parameters can be used to express a machine’s condition and to track its evolution through time, such as modal parameters extracted from vibration signals.
Nathali Rolon Dreher +2 more
doaj +2 more sources
Stretching Method-Based Operational Modal Analysis of An Old Masonry Lighthouse [PDF]
Sensors, 2019 We present in this paper a structural health monitoring study of the Egyptian lighthouse of Rethymnon in Crete, Greece. Using structural vibration data collected on a limited number of sensors during a 3-month period, we illustrate the potential of the ...
Emmanouil Daskalakis +4 more
doaj +2 more sources
Identification of Historical Veziragasi Aqueduct Using the Operational Modal Analysis [PDF]
The Scientific World Journal, 2014 This paper describes the results of a model updating study conducted on a historical aqueduct, called Veziragasi, in Turkey. The output-only modal identification results obtained from ambient vibration measurements of the structure were used to update a ...
E. Ercan, A. Nuhoglu
doaj +2 more sources
Numerical Assessment of Building Vibration Techniques Using Laboratory Models [PDF]
Port Said Engineering Research Journal, 2022 Experimental Modal Analysis (EMA) is one of the most attractive engineering fields nowadays, which specifies in the studies of modal parameters of existing small buildings under forced vibrations.
moataz Elrayes +2 more
doaj +1 more source
Applied Sciences, 2023 An automated operational modal analysis (AOMA) method that considers the uncertainty in modal parameters is presented and data acquired from actual bridges are used to validate it.
Keunhee Cho, Jeong-Rae Cho
doaj +1 more source
Operational modal analysis using symbolic regression for a nonlinear vibration system
Journal of Low Frequency Noise, Vibration and Active Control, 2021 The existence of nonlinearity is an inevitable frequent occurrence that should be considered to accurately identify the modal parameters of a vibration system using operational modal analysis.
Xuchu Jiang, Feng Jiang
doaj +1 more source
Operational Modal Analysis on Bridges: A Comprehensive Review
Infrastructures, 2023 Structural health monitoring systems have been employed throughout history to assess the structural responses of bridges to both natural and man-made hazards.
Hamed Hasani, Francesco Freddi
doaj +1 more source
Operational modal analysis of under-determined system based on Bayesian CP decomposition
Nihon Kikai Gakkai ronbunshu, 2021 Modal properties such as natural frequencies, modal shapes and damping ratio are useful to understand structural dynamics of mechanical systems. To use the modal properties for structural health monitoring, they need to be estimated under operational ...
Sunao TOMITA, Tomohiko JIMBO
doaj +1 more source