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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA22-13811S" target="_blank" >GA22-13811S: Inovativní defektoskopická metoda založená na tomografické analýze vlastních tvarů kmitání ve 3D</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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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Počet stran výsledku

10

Strana od-do

842-851

Název nakladatele

KU Leuven

Místo vydání

Leuven

Místo konání akce

Leuven

Datum konání akce

9. 9. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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