scholarly journals Fatigue damage detection and growth monitoring for composite structure using coda wave interferometry

2020 ◽  
Author(s):  
Hyung Jin Lim ◽  
Hyunseong Lee ◽  
Travis Skinner ◽  
Aditi Chattopadhyay ◽  
Asha Hall
Keyword(s):  
Damage Detection ◽  
Fatigue Damage ◽  
Composite Structure ◽  
Coda Wave ◽  
Growth Monitoring ◽  
Coda Wave Interferometry

Damage detection in concrete using coda wave interferometry

2011 ◽  
Vol 44 (8) ◽  
pp. 728-735 ◽  
Author(s):  
Dennis P. Schurr ◽  
Jin-Yeon Kim ◽  
Karim G. Sabra ◽  
Laurence J. Jacobs
Keyword(s):  
Damage Detection ◽  
Coda Wave ◽  
Coda Wave Interferometry

Damage detection in elastic properties of masonry bridges using coda wave interferometry

2016 ◽  
Vol 24 (10) ◽  
pp. e1976 ◽  
Author(s):  
Marcello Serra ◽  
Gaetano Festa ◽  
Maurizio Vassallo ◽  
Aldo Zollo ◽  
Antonino Quattrone ◽  
...  
Keyword(s):  
Damage Detection ◽  
Elastic Properties ◽  
Coda Wave ◽  
Coda Wave Interferometry

scholarly journals Damage Detection at a Reinforced Concrete Specimen with Coda Wave Interferometry

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5013
Author(s):  
Stefan Grabke ◽  
Felix Clauß ◽  
Kai-Uwe Bletzinger ◽  
Mark Alexander Ahrens ◽  
Peter Mark ◽  
...  
Keyword(s):  
Inverse Problem ◽  
Reinforced Concrete ◽  
Damage Detection ◽  
Concrete Specimen ◽  
Bending Test ◽  
Coda Wave ◽  
Multiple Cracks ◽  
Ultrasonic Signals ◽  
Significant Difference ◽  
Coda Wave Interferometry

Reinforced concrete is a widely used construction material in the building industry. With the increasing age of structures and higher loads there is an immense demand for structural health monitoring of built infrastructure. Coda wave interferometry is a possible candidate for damage detection in concrete whose applicability is demonstrated in this study. The technology is based on a correlation evaluation of two ultrasonic signals. In this study, two ways of processing the correlation data for damage detection are compared. The coda wave measurement data are obtained from a four-point bending test at a reinforced concrete specimen that is also instrumented with fibre optic strain measurements. The used ultrasonic signals have a central frequency of 60 kHz which is a significant difference to previous studies. The experiment shows that the coda wave interferometry has a high sensitivity for developing cracks and by solving an inverse problem even multiple cracks can be distinguished. A further specialty of this study is the use of finite elements for solving a diffusion problem which is needed to state the previously mentioned inverse problem for damage localization.

scholarly journals Local damage detection by nonlinear coda wave interferometry combined with time reversal

Ultrasonics ◽  
2020 ◽  
Vol 108 ◽  
pp. 106226
Author(s):  
N. Smagin ◽  
A. Trifonov ◽  
O. Bou Matar ◽  
V.V. Aleshin
Keyword(s):  
Damage Detection ◽  
Time Reversal ◽  
Coda Wave ◽  
Local Damage ◽  
Coda Wave Interferometry

Monitoring medium changes in an intraplate setting with coda wave interferometry

2013 ◽  
Author(s):  
Virginie D'Hour ◽  
Aderson F. do Nascimento ◽  
Heleno C. de Lima Neto ◽  
Joaquim M. Ferreira ◽  
Martin Schimmel
Keyword(s):  
Coda Wave ◽  
Coda Wave Interferometry

scholarly journals Sensitivity of Ultrasonic Coda Wave Interferometry to Material Damage—Observations from a Virtual Concrete Lab

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4033
Author(s):  
Claudia Finger ◽  
Leslie Saydak ◽  
Giao Vu ◽  
Jithender J. Timothy ◽  
Günther Meschke ◽  
...  
Keyword(s):  
Elastic Moduli ◽  
Concrete Specimen ◽  
Coda Wave ◽  
Velocity Change ◽  
Damage Scenarios ◽  
Different Types ◽  
Source Signal ◽  
The Impact ◽  
Structural Scale ◽  
Coda Wave Interferometry

Ultrasonic measurements are used in civil engineering for structural health monitoring of concrete infrastructures. The late portion of the ultrasonic wavefield, the coda, is sensitive to small changes in the elastic moduli of the material. Coda Wave Interferometry (CWI) correlates these small changes in the coda with the wavefield recorded in intact, or unperturbed, concrete specimen to reveal the amount of velocity change that occurred. CWI has the potential to detect localized damages and global velocity reductions alike. In this study, the sensitivity of CWI to different types of concrete mesostructures and their damage levels is investigated numerically. Realistic numerical concrete models of concrete specimen are generated, and damage evolution is simulated using the discrete element method. In the virtual concrete lab, the simulated ultrasonic wavefield is propagated from one transducer using a realistic source signal and recorded at a second transducer. Different damage scenarios reveal a different slope in the decorrelation of waveforms with the observed reduction in velocities in the material. Finally, the impact and possible generalizations of the findings are discussed, and recommendations are given for a potential application of CWI in concrete at structural scale.

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