Dynamics of a cantilever beam with piezoelectric sensor: Experimental study

0573679 - ÚT 2024 CZ eng C - Conference Paper (international conference)
Kolman, Radek - Kylar, Jaromír - Kotek, Vojtěch - Cimrman, Robert - Musil, Ladislav
Dynamics of a cantilever beam with piezoelectric sensor: Experimental study.
Engineering Mechanics 2023 : 29th International Conference. Vol. 29. Prague: Institute of Thermomechanics of the Czech Academy of Sciences, 2023 - (Radolf, V.; Zolotarev, I.), s. 119-122. ISBN 978-80-87012-84-0. ISSN 1805-8248. E-ISSN 1805-8256.
[Engineering Mechanics 2023 /29./. Milovy (CZ), 09.05.2023-11.05.2023]
R&D Projects: GA ČR(CZ) GF22-00863K
Institutional support: RVO:61388998
Keywords : dynamics of beam-like structure * piezo-electric material * sensing of dynamic response * structural Health Monitoring * laser vibrometer measurement
OECD category: Applied mechanics
https://www.engmech.cz/improc/2023/119.pdf

Online and real-time sensing and monitoring of the health state of complex structures, such as air-craft and critical parts of power stations, is an essential part of the research in dynamics. Several types of sensors are used for sensing dynamic responses and monitoring response changes during the operation of critical parts of complex systems. The piezoelectric (PZ) materials belong to one group of electroactive materials, which transform mechanical deformation into an electrical response. For example, PZ ceramics or PVDF foils are employed for online sensing of the time history of mechanical deformation. Experimentally obtained response of a cantilever beam structure with a glued PZ sensor is the case of interest in this contribution. During the transient problem of the beam loaded by suddenly interrupted load due to the weight of a mass at the end of the beam, the time history of normal velocity at a point on the beam surface has been measured by a laser vibrometer and parallely, the output voltage on the PZ sensor has been measured by an electric device. The experimental data in the case of the first eigen-frequency is in good agreement with the value given by the formulae from the theoretical modeling of free vibration of a linear beam.
Permanent Link: https://hdl.handle.net/11104/0344249