Results 21 to 30 of about 629,646 (340)
Uncertainties on modal parameters by operational modal analysis [PDF]
Mechanics & 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
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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
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Operational modal analysis for supporting the retrofit design of bridges
ce/papers, 2023 Ambient vibration tests and operational modal analysis are commonly adopted worldwide to identify the dynamic behaviour of structures because they offer several advantages such as the use of portable light equipment, the possibility to be performed ...
V. Nicoletti +4 more
semanticscholar +1 more source
Structural Control & Health Monitoring, 2023 Operational modal analysis (OMA) enables the identification of modal characteristics under operational loads and conditions. Traditional frequency-domain methods cannot directly capture modal changes over time, while existing time-frequency ...
Yuanchen Zeng +5 more
semanticscholar +1 more source
International 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
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Structural Control & Health Monitoring, 2022 Structural health monitoring (SHM) is one of the main research topics in civil, mechanical and aerospace engineering. In this regard, modal parameters and their trends over time can be used as features and indicators of damage occurrence and growth ...
M. Civera +2 more
semanticscholar +1 more source
Multi-Variant Modal Analysis Approach for Large Industrial Machine
Energies, 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
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NExT‐LF: A Novel Operational Modal Analysis Method via Tangential Interpolation [PDF]
International Journal of Mechanical System DynamicsOperational modal analysis (OMA) is vital for identifying modal parameters under real‐world conditions, yet existing methods often face challenges with noise sensitivity and stability.
Gabriele Dessena +3 more
semanticscholar +1 more source
Operational Modal Analysis as a Support for the Development of Digital Twin Models of Bridges
Infrastructures, 2023 Many transportation infrastructures all around the world are facing new challenges in terms of ageing and loss of performance. The infrastructural asset managers are required to perform scrupulous control of the health condition of the infrastructures ...
V. Nicoletti +3 more
semanticscholar +1 more source
Operational modal analysis of road-rail bridge
MATEC Web of Conferences, 2015 In this paper, we describe an Operational Modal Analysis (OMA) of the Bridge over the Tocantins River, a composite road-rail bridge located in the city of Marabá, state of Pará, northern Brazil. The bridge is part of the Carajás Railway, which is used by
Cardoso M. +3 more
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