scholarly journals AMBIENT VIBRATION ANALYSIS of an INDUSTRIAL BUILDING

2021 ◽  
pp. 47-64
Author(s):  
Hüseyin KARTAL ◽  
Yunus DERE ◽  
Musa ARSLAN
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration ◽  
Industrial Building

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 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.

scholarly journals Ambient Vibration Analysis on Large Scale Arrays When Lateral Variations Occur in the Subsurface: A Study Case in Switzerland

2020 ◽  
Vol 177 (9) ◽  
pp. 4247-4269
Author(s):  
Dario Chieppa ◽  
Manuel Hobiger ◽  
Paolo Bergamo ◽  
Donat Fäh
Keyword(s):  
Wave Velocity ◽  
Vibration Analysis ◽  
Velocity Structure ◽  
Velocity Profiles ◽  
Dispersion Curves ◽  
Love Waves ◽  
Ambient Vibration ◽  
S Wave ◽  
Single Station ◽  
Rayleigh And Love Waves

Abstract The ambient vibration analysis is a non-invasive and low-cost technique used in site characterization studies to reconstruct the subsurface velocity structure. Depending on the goal of the research, the investigated depth ranges from tens to hundreds of meters. In this work, we aimed at investigating the deeper contrasts within the crust and in particular down to the sedimentary-rock basement transition located at thousands of meters of depth. To achieve this goal, three seismic arrays with minimum and maximum interstation distances of 7.9 m and 26.8 km were deployed around the village of Schafisheim. Schafisheim is located in the Swiss Molasse Basin, a sedimentary basin stretching from Lake Constance to Lake Geneva with a thickness ranging from 800 to 900 m in the north to 5 km in the south. To compute the multimodal dispersion curves for Rayleigh and Love waves and the Rayleigh wave ellipticity angles, the data were processed using two single-station and three array processing techniques. A preliminary analysis of the inversion results pointed out a good agreement with the fundamental modes of Rayleigh and Love waves used in the inversion and a quite strong disagreement with the higher modes. The impossibility to explain at the same time most of the dispersion curves was interpreted as the co-existence, within the investigated area, of portions of the subsurface with different geophysical properties. The hypothesis was confirmed by the Horizontal-to-Vertical spectral analysis (H/V) which indicated the presence of two distinguished areas. The observation allowed a new interpretation and the identification of the Rayleigh and Love wave fundamental modes and of the S-wave velocity profiles to be reconstructed for each investigated zone. It results in two S-wave velocity profiles with similar velocities down to 15 km deferring only in their shallow portions due to the occurrence of a low velocity zone at a depth of 50–150 m at the centre of the investigated area.

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