Monitoring a Building Using Deconvolution Interferometry. II: Ambient-Vibration Analysis

2013 ◽  
Vol 104 (1) ◽  
pp. 204-213 ◽  
Author(s):  
N. Nakata ◽  
R. Snieder
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration ◽  
Deconvolution Interferometry

Diagnostics of piping by ambient vibration analysis

2000 ◽  
Vol 198 (1-2) ◽  
pp. 131-140 ◽  
Author(s):  
A Mattheis ◽  
M Trobitz ◽  
K Kussmaul ◽  
K Kerkhof ◽  
R Bonn ◽  
...  
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration

scholarly journals Structural assessment of bridges through ambient noise deconvolution interferometry: application to the lateral dynamic behaviour of a RC multi-span viaduct

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Enrique García-Macías ◽  
Filippo Ubertini
Keyword(s):  
Wave Propagation ◽  
Ambient Noise ◽  
Dynamic Behaviour ◽  
Damage Identification ◽  
Ambient Vibration ◽  
Local Damage ◽  
Engineering Structures ◽  
Structural Assessment ◽  
Ambient Vibration Tests ◽  
Deconvolution Interferometry

AbstractOperational Modal Analysis (OMA) is becoming a mature and widespread technique for Structural Health Monitoring (SHM) of engineering structures. Nonetheless, while proved effective for global damage assessment, OMA-based techniques can hardly detect local damage with little effect upon the modal signatures of the system. In this context, recent research studies advocate for the use of wave propagation methods as complementary to OMA to achieve local damage identification capabilities. Specifically, promising results have been reported when applied to building-like structures, although the application of Seismic Interferometry to other structural typologies remains unexplored. In this light, this work proposes for the first time in the literature the use of ambient noise deconvolution interferometry (ANDI) to the structural assessment of long bridge structures. The proposed approach is exemplified with an application case study of a multi-span reinforced-concrete (RC) viaduct: the Chiaravalle viaduct in Marche Region, Italy. To this aim, ambient vibration tests were performed on February 4$$^{\text {th}}$$ th and 7$$^{\text {th}}$$ th 2020 to evaluate the lateral and longitudinal dynamic behaviour of the viaduct. The recorded ambient accelerations are exploited to identify the modal features and wave propagation properties of the viaduct by OMA and ANDI, respectively. Additionally, a numerical model of the bridge is constructed to interpret the experimentally identified waveforms, and used to illustrate the potentials of ANDI for the identification of local damage in the piers of the bridge. The presented results evidence that ANDI may offer features that are quite sensitive to damage in the bridge substructure, which are often hardly identifiable by OMA.

scholarly journals Ambient vibration analysis of an unstable mountain slope

2010 ◽  
Vol 180 (2) ◽  
pp. 820-828 ◽  
Author(s):  
Jan Burjánek ◽  
Gabriela Gassner-Stamm ◽  
Valerio Poggi ◽  
Jeffrey R. Moore ◽  
Donat Fäh
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration ◽  
Mountain Slope

Chaotic and ambient vibration analysis of composite lap joint damage

2007 ◽  
Author(s):  
Lou Pecora ◽  
Jon Nichols ◽  
Mark Seaver ◽  
Steve Trickey ◽  
Sara Motley
Keyword(s):  
Vibration Analysis ◽  
Joint Damage ◽  
Ambient Vibration ◽  
Lap Joint

scholarly journals Seismic response of an 8-story RC-building from ambient vibration analysis

2014 ◽  
Vol 13 (7) ◽  
pp. 2095-2120 ◽  
Author(s):  
D. Bindi ◽  
B. Petrovic ◽  
S. Karapetrou ◽  
M. Manakou ◽  
T. Boxberger ◽  
...  
Keyword(s):  
Seismic Response ◽  
Vibration Analysis ◽  
Ambient Vibration ◽  
Rc Building

Deck and Cable Dynamic Testing of a Single-span Bridge Using Radar Interferometry and Videometry Measurements

2016 ◽  
Vol 10 (1) ◽  
Author(s):  
George Piniotis ◽  
Vassilis Gikas ◽  
Thanassis Mpimis ◽  
Harris Perakis
Keyword(s):  
Vibration Analysis ◽  
Dynamic Testing ◽  
Single Point ◽  
Power Spectra ◽  
Image Correlation ◽  
Vibration Monitoring ◽  
Ambient Vibration ◽  
Modal Parameter ◽  
Cable Vibrations ◽  
Modal Parameter Estimation

AbstractThis paper presents the dynamic testing of a roadway, single-span, cable-stayed bridge for a sequence of static load and ambient vibration monitoring scenarios. Deck movements were captured along both sideways of the bridge using a Digital Image Correlation (DIC) and a Ground-based Microwave Interfererometer (GBMI) system. Cable vibrations were measured at a single point location on each of the six cables using the GBMI technique.Dynamic testing involves three types of analyses; firstly, vibration analysis and modal parameter estimation (i. e., natural frequencies and modal shapes) of the deck using the combined DIC and GBMI measurements. Secondly, dynamic testing of the cables is performed through vibration analysis and experimental computation of their tension forces. Thirdly, the mechanism of cable-deck dynamic interaction is studied through their Power Spectra Density (PSD) and the Short Time Fourier Transform (STFT) analyses. Thereby, the global (deck and cable) and local (either deck or cable) bridge modes are identified, serving a concrete benchmark of the current state of the bridge for studying the evolution of its structural performance in the future. The level of synergy and complementarity between the GBMI and DIC techniques for bridge monitoring is also examined and assessed.

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