Comparison of fundamental natural modes of cantilevered beam obtained by 3D X-ray computed tomography and laser Doppler vibrometry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00645212" target="_blank" >RIV/68378297:_____/24:00645212 - 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
Comparison of fundamental natural modes of cantilevered beam obtained by 3D X-ray computed tomography and laser Doppler vibrometry
Original language description
This paper presents the pilot results and evaluation of the suitability of 3D X-ray computed tomography (XCT) for a modal analysis of the small specimens. The determination of a fundamental mode is illustrated on an example of a cantilever beam under a kinematic harmonic resonance excitation. The beam is excited by an electromagnetic voice-coil actuator mounted on the rotary stage of the XCT setup. The ability to rotate the oscillating specimen allows 3D motion to be captured by XCT and also provides accurate volumetric data of the imperfection beam, which is used for numerical calculation of the modal properties by the FEM model. The innovative XCT method provides results of the 3D modal shape of the deformed beam with nonlinearities, imperfections and defects that are hidden to other measurement methods. Validation of the XCT method is provided by a well-known Laser Doppler Vibrometry (LDV) and numerical calculations based on FEM models.
Czech name
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Czech description
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Project
<a href="/en/project/GA22-13811S" target="_blank" >GA22-13811S: Innovative defectoscopy method based on tomographic analysis of the eigenvalue mode shapes in 3D</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of ISMA2024 International conference on noise and vibration engineering USD2024 International conference on uncertainty in structural dynamics
ISBN
978-90-82893-17-5
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
842-851
Publisher name
KU Leuven
Place of publication
Leuven
Event location
Leuven
Event date
Sep 9, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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