Verification of digital twin concept for time reversal analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00519736" target="_blank" >RIV/61388998:_____/19:00519736 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Verification of digital twin concept for time reversal analysis
Original language description
It has been shown experimentally, that it is possible to record signals of elastic wave propagation on a tested structure and perform time reversal focusing on an independent reference structure. Here the possibility of utilizing a numerical model – digital twin, as a reference structure is studied. An experiment was conducted on a strip of Al-alloy with known mechanical constants. In the firstnstep was the numerical model calibrated. A measurement of dispersive wave propagation was performed and compared with equivalent results of the numerical simulation. Material parametersnwere adjusted accordingly and usable correlation length was determined. Once the model was calibrated, second experimental setup was tested. The experiment was conducted again with thentransducer placed in different location with different modality. A limited vibrometer scan was performed and the data were fed into the numerical model. Using time reversal it was possible tonlocalize the source and partially reconstruct the source function. Presented approach could be used for localization of impacts or acoustic emission sources and prospectively for damage detection andnsizing.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-22615S" target="_blank" >GA17-22615S: Time reversal ultrasonic signal processing used in nondestructive evaluation of materials and structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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