Comparison of seismometer and radar measurements for the modal identification of civil engineering structures

Negulescu, Caterina; Luzi, G.; Crosetto, Michele; Raucoules, Daniel; Roullé, Agathe; Monfort, Daniel; Pujades, L. G.; Colas, Bastien; Dewez, Thomas

doi:10.1016/j.engstruct.2013.01.005

Cited by 58 publications

(42 citation statements)

References 12 publications

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“…In Negulescu et al 2013, the authors compare radar measurements, conventional contact sensors and modelling acquired during the monitoring of an urban building. The investigated building gets a reinforced concrete (RC) wall structure and it includes a double-basement, a ground floor and 10 storeys.…”

Section: A Challenging Measurementmentioning

confidence: 99%

“…Pieraccini et al 2000Pieraccini et al -2003. Later on, papers dealing with ambient vibration testing of structures using specific radar systems, devoted to this application, were published about bridges (Gentile & Bernardini 2008, Stabile et al 2013, cables (Gentile and Ubertini, 2012), wind turbines (Pieraccini et al, 2008), historical towers (Atzeni et al 210), tall towers (Luzi et al 2013), chimneys (Rodelsberg et al 2010) and buildings (Negulescu et al 2013). …”

Section: Introductionmentioning

confidence: 99%

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Radar interferometry as a tool for structural health monitoring: current situation and perspectives of the technique for the next decade

Luzi¹,

Crosetto²,

Gentile³

2016

Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure

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The development of interferometric radar sensors for the application to Civil Engineering structures took place in the last fifteen years, and the effectiveness of this technique has been demonstrated in different case studies. In this paper, after a brief introduction dedicated to the working principle, the main characteristics of the currently available sensors are summarized and the results of two tests are used to demonstrate how the main technical features of the radar sensor are linked to the final performances of the measurement in terms of spatial and temporal resolution. Furthermore, the potential improvements achievable using an updated technology nowadays available off-the-shelf are discussed as well. Some comments are also dedicated to the few advanced sensors recently described in literature, their potentials and limits. The overall analysis is carried out with the goal of evaluating the limits and advantages of this technique from the view point of the user communities.

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Section: A Challenging Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radar interferometry as a tool for structural health monitoring: current situation and perspectives of the technique for the next decade

Luzi¹,

Crosetto²,

Gentile³

2016

Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure

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“…This radar sensor is an industrially engineered microwave interferometer used in the last decade in several vibration testing studies. An exhaustive description of the functioning principle was done by Gentile & Cabboi [15]; for examples of applications to different structures testing, see: [16], [17], [18].…”

Section: 1-experimental Setupmentioning

confidence: 99%

Parametric Study of the Errors Obtained from the Measurement of the Oscillating Movement of a Bridge Using Image Processing

2016

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The movement of a pedestrian bridge retrieved by means of image processing technique has been analysed in this paper. An optical target has been attached to the deck and its oscillation has been tracked with fast cameras. The movement of the bridge has also been measured with a radar interferometer and this result has been taken as the reference signal. Using these data, a parametric study of the errors introduced by the image-based methods has been performed. The influence of some variables in the measurement error such as the distance to the target, the image size, the type of camera or the movement amplitude has been analysed for four different distances, and two types of excitations. Results show that the relative error decreases with the amplitude and the target diameter and it increases with the target distance. Additionally, the maximum relative error obtained in most of the analysed cases is below 10%.

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“…The system can be used with various antennas to better adapt the measuring conditions to different geometries and monitored surfaces. The radar has been used since many years by many researches to carry out monitoring different structures This apparatus has been used to measure the dynamic response of a variety of structures, such as bridges [9], wind farms [10], buildings [11] and towers [12], [13]. 2 The novel apparatus…”

Section: A Commercial Systemmentioning

confidence: 99%

An interferometric radar sensor for monitoring the vibrations of structures at short ranges

et al. 2018

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Abstract. The Real-Aperture-Radar (RAR) interferometry technique consolidated in the last decade as an operational tool for the monitoring of large civil engineering structures as bridges, towers, and buildings. In literature, experimental campaigns collected through a well-known commercial equipment have been widely documented, while the cases where different types of sensors have been tested are a few. On the bases of some experimental tests, a new sensor working at high frequency, providing some improved performances, is here discussed. The core of the proposed system is an off-the-shelf, linear frequency modulated continuous wave device. The development of this apparatus is aimed at achieving a proof-of-concept, tackling operative aspects related to the development of a low cost and reliable system. The capability to detect the natural frequencies of a lightpole has been verified; comparing the results of the proposed sensor with those ones obtained through a commercial system based on the same technique, a more detailed description of the vibrating structure has been achieved. The results of this investigation confirmed that the development of sensors working at higher frequencies, although deserving deeper studies, is very promising and could open new applications demanding higher spatial resolutions at close ranges.

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Comparison of seismometer and radar measurements for the modal identification of civil engineering structures

Cited by 58 publications

References 12 publications

Radar interferometry as a tool for structural health monitoring: current situation and perspectives of the technique for the next decade

Radar interferometry as a tool for structural health monitoring: current situation and perspectives of the technique for the next decade

Parametric Study of the Errors Obtained from the Measurement of the Oscillating Movement of a Bridge Using Image Processing

An interferometric radar sensor for monitoring the vibrations of structures at short ranges

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