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Operational modal analysis and earthquake engineering
, 2009 Operational Modal Analysis (OMA) techniques are powerful and versatile and applications in technical literature are becoming frequent. In the present paper a number of case studies will be reviewed in order to point out the effectiveness of such procedures in the earthquake engineering area.
RAINIERI, Carlo +2 more
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Operational Modal Analysis of Transformer Windings
IEEE Transactions on Power Delivery, 2020Broadband responses under random excitations can reflect the modal characteristics of a structure. This paper investigates the applicability of operational modal analysis (OMA) to extract modal parameters of transformer windings under random excitations.
Fan Zhang +3 more
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Uncertainties in an Application of Operational Modal Analysis
2016Operational modal analysis is widely used to estimate the mechanical properties of vibrating systems. The several available mathematical techniques, based upon different mathematical formulations, have the common feature that the unmeasured excitation is modeled as a random process specified by some probabilistic model.
Banfi, Lorenzo, Carassale, Luigi
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Operational Modal Analysis of a Historic Tower in Bari
2011In this paper, the latest identification techniques both in the time and in the frequency domains, are applied to the data obtained from the dynamic monitoring of the reinforced concrete tower of the Provincial Administration Building of Bari (Italy). The tower, dating back to the thirties of the 20th century and about 60 m tall, is not only a typical ...
Mariella Diaferio +4 more
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Modal-style operators in qualitative data analysis
2002 IEEE International Conference on Data Mining, 2002. Proceedings., 2003We explore the usage of the modal possibility operator (and its dual necessity operator) in qualitative data analysis, and show that it-quite literally-complements the derivation operator of formal concept analysis; we also propose a new generalization of the rough set approximation operators.
Ivo Düntsch, Günther Gediga
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Covariance regression for operational modal analysis
Journal of Vibration and Control, 2021This article proposes a covariance regression procedure for operational modal analysis. The whole work is mainly twofold. On the one hand, two identities on the covariance are presented and they reveal that the covariance at different times is linearly dependent through both scalar and matrix coefficients. On the other hand, based on the two identities,
Zhong-Rong Lu +3 more
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Modal scaling in operational modal analysis using a finite element model
International Journal of Mechanical Sciences, 2013Abstract Operational modal analysis (OMA) is a technique that has been widely used on civil and mechanical structures in the last 10 years. As the force is unknown, mode shapes cannot be mass normalized from the responses used for modal identification.
Aenlle, M L, Brincker, Rune
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Operational Modal Analysis for Automobile
2012This paper presents the method of operational modal analysis, which is the identification of modal parameters by only using the response signals under operational conditions or ambient excitations. Giving the actual road spectrum as ambient excitations on vibration table, the operational modal analysis for automobile was conducted by test.
Wang Jing +4 more
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Operational modal analysis for Canton Tower
Smart Structures and Systems, 2012The 610 m high Canton Tower (formerly named Guangzhou New Television Tower) is currently considered as a benchmark problem for structural health monitoring (SHM) of high-rise slender structures. In the benchmark study task I, a set of 24-hour ambient vibration measurement data has been available for the output-only system identification study.
Yan Niu +2 more
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Operational Modal Analysis on Wind Turbine Hub
2018In this paper we present a dataset for Operational Modal Analysis (OMA) on a Vestas V112 wind turbine hub and illustrate how reliable Automatic OMA (AOMA) can be done on this structure. The chosen AOMA algorithm is called the Smallest Sphere Algorithm (SSA), and is based on the sliding filter stability diagram recently introduced by Olsen et al.
Juul, Martin Ørum Ørhem +2 more
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