Modal analysis ≈ Modal analysis
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Understanding Small-Signal Stability of Low-Inertia Systems Open
Large-scale integration of renewable generation, usually interfaced to the network through power electronics, has led to drastic changes in power system dynamics. This paper presents novel insights into stability properties of such systems…
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A non-contact vision-based system for multipoint displacement monitoring in a cable-stayed footbridge Open
This is the author accepted manuscript. The final version is available from Wiley via the DOI in this record.
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Structural damage identification using damping: a compendium of uses and features Open
The vibration responses of structures under controlled or ambient excitation can be used to detect structural damage by correlating changes in structural dynamic properties extracted from responses with damage. Typical dynamic properties r…
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Stability Analysis of a PMSG-Based Large Offshore Wind Farm Connected to a VSC-HVDC Open
This paper presents modal analysis of a large offshore wind farm using PMSG type wind turbines connected to a VSC-HVDC. Multiple resonant frequencies are observed in the ac grid of offshore wind farms. Their control is crucial for the unin…
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Unified Modular State-Space Modeling of Grid-Connected Voltage-Source Converters Open
This paper proposes a modular state-space modeling framework for grid-connected voltage-source converters, where the different control loops, including the ac current control, the phase-locked loop, the dc-link voltage control and the ac v…
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Prototyping and Validation of MEMS Accelerometers for Structural Health Monitoring—The Case Study of the Pietratagliata Cable-Stayed Bridge Open
In recent years, thanks to the simple and yet efficient design, Micro Electro-Mechanical Systems (MEMS) accelerometers have proven to offer a suitable solution for Structural Health Monitoring (SHM) in civil engineering applications. Such …
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Fatigue assessment of offshore wind turbines on monopile foundations using multi‐band modal expansion Open
Offshore wind turbines (OWTs) are subjected to both quasi‐static loads originating from variations in the thrust force and dynamic loads linked to turbulence, waves and turbine dynamics. Both types of loads contribute to fatigue life progr…
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Dynamic identification and model updating of an eight-storey CLT building Open
So far, few in situtests have been carried out to estimate the modal parameters of multi-storey Cross-Laminated-Timber (CLT) buildings: the understanding of their dynamic behaviour under operational conditions is still an open issue. In th…
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Mechanical characterization and experimental modal analysis of 3D Printed ABS, PC and PC-ABS materials Open
Additive manufacturing (AM) process builds the parts, layer by layer precisely from Computer-Aided Design (CAD) models, whereas traditional subtractive manufacturing process removes layers from materials to attain the desired shape. Of lat…
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Modal vibration response of rice combine harvester frame under multi-source excitation Open
When a rice combine harvester operates in the field, its frame vibrates significantly under multi-source excitation forces which can cause complex vibration and structural deformation. The vibration response of combine harvester frame unde…
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The Adequacy of the Present Practice in Dynamic Aggregated Modeling of Wind Farm Systems Open
Large offshore wind farms are usually composed of several hundred individual wind turbines, each turbine having its own complex set of dynamics. The analysis of the dynamic interaction between wind turbine generators (WTG), interconnecting…
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A DBSCAN-based automated operational modal analysis algorithm for bridge monitoring Open
Advanced data analysis techniques are of paramount importance for the Structural Health Monitoring (SHM) of civil buildings and infrastructures. In particular, Automated Operational Modal Analysis (AOMA) algorithms are necessary for the ou…
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Machine learning‐based automatic operational modal analysis: A structural health monitoring application to masonry arch bridges Open
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 a…
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Gaussian Process Time-Series Models for Structures under Operational Variability Open
A wide range of vibrating structures are characterized by variable structural dynamics resulting from changes in environmental and operational conditions, posing challenges in their identification and associated condition assessment. To ta…
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Bloch Analysis of Artificial Lines and Surfaces Exhibiting Glide Symmetry Open
International audience
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Mechanistic Insights into Human Brain Impact Dynamics through Modal Analysis Open
Although concussion is one of the greatest health challenges today, our physical understanding of the cause of injury is limited. In this Letter, we simulated football head impacts in a finite element model and extracted the most dominant …
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Dynamic Model Updating for Bridge Structures Using the Kriging Model and PSO Algorithm Ensemble with Higher Vibration Modes Open
This study applied the kriging model and particle swarm optimization (PSO) algorithm for the dynamic model updating of bridge structures using the higher vibration modes under large-amplitude initial conditions. After addressing the higher…
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Damage imaging in composites using nonlinear vibro-acoustic wave modulations Open
The paper deals with the application of nonlinear vibro‐acoustic modulation technique for detection and localization of impact damage in a laminated composite plate. An imaging procedure—based on the nonlinear vibro‐acoustic modulation sid…
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Damage identification using modal strains identified from operational fiber-optic Bragg grating data Open
Vibration-based structural health monitoring of civil structures relies on the repeated identification of dynamic structural characteristics of the structure from output-only vibration data. Natural frequencies and displacement mode shapes…
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Primary resonance of traveling viscoelastic beam under internal resonance Open
Under the 3:1 internal resonance condition, the steady-state periodic response of the forced vibration of a traveling viscoelastic beam is studied. The viscoelastic behaviors of the traveling beam are described by the standard linear solid…
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Mechanical low-frequency filter via modes separation in 3D periodic structures Open
This work presents a strategy to design three-dimensional elastic periodic structures endowed with complete bandgaps, the first of which is ultra-wide, where the top limits of the first two bandgaps are overstepped in terms of wave transmi…
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An SHM approach using machine learning and statistical indicators extracted from raw dynamic measurements Open
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Temperature Effect on Vibration Properties and Vibration-Based Damage Identification of Bridge Structures: A Literature Review Open
In civil engineering structures, modal changes produced by environmental conditions, especially temperature, can be equivalent to or greater than the ones produced by damage. Therefore, it is necessary to distinguish the variations in stru…
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Bayesian operational modal analysis of Jiangyin Yangtze River Bridge Open
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record
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Multi-modal vibration energy harvesting approach based on nonlinear oscillator arrays under magnetic levitation Open
International audience
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Atomic Norm Minimization for Modal Analysis From Random and Compressed Samples Open
Modal analysis is the process of estimating a system's modal parameters such\nas its natural frequencies and mode shapes. One application of modal analysis\nis in structural health monitoring (SHM), where a network of sensors may be\nused …
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Structural vibration serviceability: New design framework featuring human-structure interaction Open
Predicting the effect of walking traffic on structural vibrations is a great challenge to designers of pedestrian structures, such as footbridges and floors. This is mainly due to the lack of adequate design guidelines, which in turn can b…
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Vibration-based SHM with up-scalable and low-cost Sensor Networks Open
Structural health monitoring (SHM) is becoming increasingly attractive for its potentialities in many application contexts, such as civil and aeronautical engineering. In these scenarios, modern SHM systems are typically constituted by a m…
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Time-frequency techniques for modal parameters identification of civil structures from acquired dynamic signals Open
A major trust of modal parameters identification (MPI) research in recent years has been based on using artificial and natural vibrations sources because vibration measurements can reflect the true dynamic behavior of a structure while ana…
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Damage detection using modal frequency curve and squared residual wavelet coefficients-based damage indicator Open
A theoretical and experimental study of the frequency-based damage detection method has been presented in this paper. Based on the eigenvalue problem and perturbation assumption of defect in modal response, the theoretical basis of the mod…