Optimal sensor placement for structural parameter identification

Chisari, Corrado; Macorini, Lorenzo; Amadio, Claudio; Izzuddin, B.A.

doi:10.1007/s00158-016-1531-1

Cited by 23 publications

(7 citation statements)

References 33 publications

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“…According to Ostachowicz, structure health monitoring can be based on vibration-based monitoring, strain monitoring, elastic waves-based monitoring, electromechanical impedance-based monitoring, and comparative vacuum monitoring [46]. Although being in agreement with this general definition, the problem analysed in the paper is its simplified short-time version and should be distinguished from the structural health monitoring widely described in the literature [45][46][47][48]. Procedures of the parameter identification in structural health monitoring are based on the experimental-data considered and on the use of a numerical or analytical models for the problem description [47].…”

Section: Discussionmentioning

confidence: 90%

On a Sensor Placement Methodology for Monitoring the Vibrations of Horizontally Excited Ground

Herbut

Rybak

Brząkała

2020

Sensors

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In this paper, the problem of optimal sensor arrangement during vibration monitoring is analysed. The wave propagation caused by horizontal excitation is investigated to predict the areas of the largest ground and structure response. The equations of motion for a transversally isotropic elastic medium with appropriate absorbing boundary conditions are solved using the finite element method (FlexPDE software). The possibility of an amplified soil medium response is examined for points located on the ground surface and at various depths. The results are presented in the form of a dimensionless vibration reduction factor, defined as the ratio of the peak particle velocity observed at the selected depth to the corresponding value observed at the ground surface. Significant amplifications (≈50%) can be observed below the ground surface, especially in the case of a weak layer below a stiff layer. The effect of vibration amplification is most significant near the boundary surface of two layers. For the points located on the ground surface, the greatest peak particle velocities are observed in the direction perpendicular to the load direction. However, the greatest vertical velocity component at the ground surface is observed in front of the applied force.

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Section: Discussionmentioning

confidence: 90%

On a Sensor Placement Methodology for Monitoring the Vibrations of Horizontally Excited Ground

Herbut

Rybak

Brząkała

2020

Sensors

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“…Optimal FBG sensor network installation is in itself an important research field that seeks to minimize the number of sensors to achieve the objectives of the monitoring system. Several researchers are working on optimal sensor location for SHM (Beal et al, 2008; Chisari et al, 2016; Kammer, 1991). In the present research, the location of the sensor is obtained from a combination of FEM analysis and manufacturing constraints.…”

Section: The Uasmentioning

confidence: 99%

Fiber Bragg grating application to study an unmanned aerial system composite wing

Gutiérrez

Fernández

Galvín

et al. 2019

Journal of Intelligent Material Systems and Structures

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Structural health monitoring consists of structural integrity assessment by means of data acquisition and analysis from on-board sensors. Fiber Bragg grating–based monitoring is increasingly attracting the scientific community working on structural health monitoring due to its multiple advantages such as electromagnetic immunity, negligible weight and size, and multiplexing availability. However, the integration of fiber optics within a structure still requires new procedures and signal treatment techniques for increasing technology reliability and exploiting its full potential. In this article, five embedded Fiber Bragg grating sensors are installed in an unmanned aerial system wing for correlating operational conditions with structural strain in real time. Sensor locations are determined by a finite element model accounting for manufacturing limitations of the fiber line. The developed Fiber Bragg grating system and processing techniques are used in static and dynamic tests showing the capacities of this powerful technology. The assessment includes deflection shape estimation, strain cycles counting, audible and visual strain alarms, aileron control based on strain levels, and structural resonance response detection.

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“…A more detailed review of OSP methods with particular emphasis on vibration measurements can be found in [12][13][14][15].…”

Section: Optimisation Algorithms For Optimal Sensor Placementmentioning

confidence: 99%

Sensor Placement Strategies for the Seismic Monitoring of Complex Vaulted Structures of the Modern Architectural Heritage

Lenticchia

Ceravolo

Antonaci

2018

Shock and Vibration

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Effective diagnostic and monitoring systems are highly needed in the building and infrastructure sector, to provide a comprehensive assessment of the structural health state and improve the maintenance and restoration planning. Vibration-based techniques, and especially ambient vibration testing, have proved to be particularly suitable for both periodic and continuous monitoring of existing structures. As a general requirement, permanent systems must include a sensing network able to run a continuous surveillance and provide reliable analyses based on different information sources. e variability in the environmental and operating conditions needs to be accounted for in designing such a sensor network, but it is mainly the structural typology that governs the optimal sensor placement strategy. Architectural heritage consists of a great variety of buildings and monuments that significantly differ from each other in terms of typology, historic period, construction techniques, and materials. In this paper, the main issues regarding seismic protection and analysis of the modern architectural heritage are introduced and applied to one of the vaulted structures built by Pier Luigi Nervi in the Turin Exhibition Centre. e importance of attaining an adequate level of knowledge in historic structures is also highlighted. After an overview of the Turin Exhibition Centre and its construction innovations, this paper focuses on Hall B, describing the structural design conceived by Pier Luigi Nervi. A seismic assessment of the structures of Hall B is then presented, considering the potential seismic damage to nonstructural elements. Subsequently, the application of an optimal sensor placement strategy is described with reference to two different scenarios: the first one corresponding to the undamaged structure and the second one that considers a possible damage to the infill walls. Finally, a novel damage-scenario-driven sensor placement strategy based on a combination of the two above mentioned is proposed and discussed. One of the major conclusions drawn from the analyses performed is that nonstructural elements undergoing seismic damage or degradation may significantly affect the global dynamic response and consequently the optimal sensing configurations.

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Optimal sensor placement for structural parameter identification

Cited by 23 publications

References 33 publications

On a Sensor Placement Methodology for Monitoring the Vibrations of Horizontally Excited Ground

On a Sensor Placement Methodology for Monitoring the Vibrations of Horizontally Excited Ground

Fiber Bragg grating application to study an unmanned aerial system composite wing

Sensor Placement Strategies for the Seismic Monitoring of Complex Vaulted Structures of the Modern Architectural Heritage

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