Results 11 to 20 of about 24,074,970 (295)

Some Elements of Operational Modal Analysis [PDF]

open access: yesShock and Vibration, 2014
This paper gives an overview of the main components of operational modal analysis (OMA) and can serve as a tutorial for research oriented OMA applications.
Rune Brincker
doaj   +3 more sources

Operational modal analysis and earthquake engineering

open access: yes, 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
openaire   +3 more sources

Uncertainty quantification of the Modal Assurance Criterion in operational modal analysis [PDF]

open access: yesMechanical Systems and Signal Processing, 2021
The Modal Assurance Criterion (MAC) is a modal indicator designed to decide whether the mode shapes used in its computation are corresponding to the same mode. During structural monitoring, it can be applied to evaluate changes in the mode shapes. When the mode shapes are estimated from measurement data, the MAC inherits their statistical properties ...
Gres, Szymon   +2 more
openaire   +3 more sources

In-flight modal identification by operational modal analysis

open access: yesJournal of the Brazilian Society of Mechanical Sciences and Engineering, 2023
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Elsa M. Cárdenas   +3 more
openaire   +2 more sources

Modal Appropriation for Use with In-Operation Modal Analysis [PDF]

open access: yesShock and Vibration, 2015
We propose in this paper a numerical modal appropriation method for use with in-operation modal analysis (INOPMA). The key idea is to realize that the correlation sequence of the system output is the sum of decaying sinusoids with a certain phase shift and therefore it may be considered as an impulse response.
M. Abdelghani, D. J. Inman
openaire   +2 more sources

Uncertainties on modal parameters by operational modal analysis [PDF]

open access: yesMechanics & Industry, 2014
Lorsqu’on fait une analyse modale opérationnelle sur des structures en fonctionnement, sans connaître les forces de perturbation, ni le nombre de fréquences importantes qui excitent le système mécanique, on doit se poser la question sur la validité de l’estimation des paramètres modaux (notamment le taux d’amortissement) et sur la précision des ...
Vu, Viet-Hung, Thomas, Marc
openaire   +2 more sources

Structural Identification from Operational Modal Analysis: The Case of Steel Structures

open access: yesBuildings, 2023
In the case of old existing structures where the cultural value is very high, structural health analyses and investigations would be better performed without damages or service interruptions. Thus, modal analysis aimed at identifying eigenfrequencies and
Flavio Stochino   +5 more
doaj   +1 more source

An online and real-time adaptive operational modal parameter identification method based on fog computing in Internet of Things

open access: yesInternational Journal of Distributed Sensor Networks, 2020
A large number of smart devices make the Internet of Things world smarter. However, currently cloud computing cannot satisfy real-time requirements and fog computing is a promising technique for real-time processing.
Cheng Wang   +4 more
doaj   +1 more source

FINITE ELEMENT MODEL UPDATING OF A HISTORICAL MINARET VIA OPERATIONAL MODAL ANALYSIS [PDF]

open access: yes, 2017
7th International Operational Modal Analysis Conference -- MAY 09-12, 2017 -- Ingolstadt, GERMANYFinite element method is commonly used for analysis of historical structures.
Hokelekli, E.   +7 more
core   +5 more sources

Multi-Variant Modal Analysis Approach for Large Industrial Machine

open access: yesEnergies, 2022
Power generation technologies are essential for modern economies. Modal Analysis (MA) is advanced but well-established method for monitoring of structural integrity of critical assets, including power ones.
Kajetan Dziedziech   +3 more
doaj   +1 more source

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