Dynamic Identification of Tensile Force in Tie-Rods by Interferometric Radar Measurements

Camassa, Domenico; Castellano, Anna; Fraddosio, Aguinaldo; Miglionico, Giuseppe; Piccioni, Mario Daniele

doi:10.3390/app11083687

Cited by 25 publications

(13 citation statements)

References 48 publications

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“…The main applications concern modal testing of masonry towers and bridges. Furthermore, a recent promising application concerns the dynamic identification of tensile force in tie rods (Gioffré et al, 2017;Camassa et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Modal testing of masonry constructions by ground-based radar interferometry for structural health monitoring: A mini review

Camassa

Vaiana

Castellano

2023

Front. Built Environ.

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Modal testing is one of the most effective experimental techniques for the structural health monitoring of masonry constructions, as it provides useful information for the calibration of structural models and for the assessment of structural damage. However, the application of modal testing to masonry constructions is sometimes hindered by the complexity of the conventional experimental set-up, which is generally based on contact sensors. In order to overcome this issue, several researchers are exploring the application of the ground-based radar interferometry, which is an increasingly popular measurement technique for remotely monitoring displacement and vibration of structures. Given the recently increasing number of articles on this subject, here we propose a mini review on the most significant works dealing with the application of ground-based radar interferometry for modal testing of masonry constructions. In particular, we show the current state of the art and highlight the main research gaps with the purpose of assessing the effectiveness of ground-based radar interferometry for the structural health monitoring of these constructions. Our mini review is primarily aimed at engineers and scientists who already know about modal testing and radar interferometry technique and are interested in the specific application to masonry constructions.

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Section: Introductionmentioning

confidence: 99%

Modal testing of masonry constructions by ground-based radar interferometry for structural health monitoring: A mini review

Camassa

Vaiana

Castellano

2023

Front. Built Environ.

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“…Several approaches have been proposed in the literature to estimate the axial tensile force, starting from the assumption to consider the tie-rod as a vibrating wire and measuring its first modal frequency [1]. Among all the proposed approaches it is worth recalling the first works where non-destructive static and/or dynamic tests were used [2][3][4][5][6][7] up to the most recent contributions where the combined use of experimental measures of the frequency response funct- ions and numerical solutions of the structural problem with unknown parameters gave interesting results [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Identification of tie-rod properties in monumental buildings under uncertainty

Pepi

2023

Theoretical and Applied Mechanics - AIMETA 2022

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Abstract. Tie-rods are simple structural elements that have been commonly used throughout the centuries to improve the stability of old masonry buildings. Measuring the dynamic vibrations of such elements can give important information on the structural performance variation with time if proper system models can be calibrated taking into account all the relevant sources of uncertainties. This paper poses and solves the inverse problem of quantifying the uncertainty in the mechanical properties, tensile axial force and boundary conditions of tie-rods from measurements of their experimental frequencies of vibrations. It is assumed that the probabilistic models of the random entries of the problem, i.e., the mass per unit length, the bending stiffness, the tensile force and the boundary conditions, are known up to some parameters which need to be estimated. Both the physical and probability spaces are discretized using finite dimensional (FD) models, i.e., deterministic functions of time and/or space and finite numbers of random variables. Monte Carlo simulation is finally used to completely characterize the uncertain features obtaining the best estimation of all the unknown features such as mass per unit length, stiffness, boundary conditions and tensile force that give the target free vibration modal parameters, i.e. natural frequencies.

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“…Several works have shown the effectiveness of the ground-based radar interferometry technique for identifying modal properties of structure and infrastructures, such as concrete and steel bridges, wind turbines, chimneys of industrial plants, antenna masts, lighting towers, culverts, buildings, etc. Moreover, some applications have concerned the dynamic identification of tensile forces in stay-cables [3] and tie-rods [4].…”

Section: Introductionmentioning

confidence: 99%

Dynamic damage identification of masonry lighthouse by radar interferometry technique

Camassa¹,

Castellano²,

Chiapperino³

et al. 2023

Proceedings of the 2022 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage

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Our work addresses the capability of the radar interferometry technique to identify the dynamic behavior of an historical masonry lighthouse.To achieve this goal, we have performed a campaign of ambient vibration tests for characterizing the dynamic properties of the San Cataldo's lighthouse located in Bari using ground-based radar interferometry. Moreover, the experimental results were used to calibrate a numerical approach for the assessment of structural damage. Indeed, by analyzing five different damage scenarios, the ability of the radar interferometry technique to identify each damage was investigated.

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Dynamic Identification of Tensile Force in Tie-Rods by Interferometric Radar Measurements

Cited by 25 publications

References 48 publications

Modal testing of masonry constructions by ground-based radar interferometry for structural health monitoring: A mini review

Modal testing of masonry constructions by ground-based radar interferometry for structural health monitoring: A mini review

Identification of tie-rod properties in monumental buildings under uncertainty

Dynamic damage identification of masonry lighthouse by radar interferometry technique

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