Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F13%3A43920233" target="_blank" >RIV/49777513:23520/13:43920233 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers

Popis výsledku v původním jazyce

This work is focused on creation of appropriate finite element model of aluminum cantilever beam with applied pair of piezoelectric patch transducers. Thanks to reversible behavior of piezoelectric effect each patch transducer can represent either actuator or sensor. For precise prediction of amplitude values in numerical simulations each transducer is calibrated before attaching to the beam by strain gauges. From these experiments piezoelectric properties of each piezoelectric patch are obtained. The cantilever beam is actuated by a voltage signal applied to one of the patches. The signal is a linear chirp (sine with swept frequency) with sufficient range to affect selected natural frequencies. The time response of the beam from the piezoelectric sensor and alternatively by a laser position sensor is transformed by STFT algorithm to obtain the characteristics in time-frequency domain (spectrogram). The finite element model of the cantilever beam with piezoelectric patches was created

Název v anglickém jazyce

Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers

Popis výsledku anglicky

This work is focused on creation of appropriate finite element model of aluminum cantilever beam with applied pair of piezoelectric patch transducers. Thanks to reversible behavior of piezoelectric effect each patch transducer can represent either actuator or sensor. For precise prediction of amplitude values in numerical simulations each transducer is calibrated before attaching to the beam by strain gauges. From these experiments piezoelectric properties of each piezoelectric patch are obtained. The cantilever beam is actuated by a voltage signal applied to one of the patches. The signal is a linear chirp (sine with swept frequency) with sufficient range to affect selected natural frequencies. The time response of the beam from the piezoelectric sensor and alternatively by a laser position sensor is transformed by STFT algorithm to obtain the characteristics in time-frequency domain (spectrogram). The finite element model of the cantilever beam with piezoelectric patches was created

Druh

O - Ostatní výsledky

CEP obor

JI - Kompositní materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP101%2F11%2F0288" target="_blank" >GAP101/11/0288: Návrh inteligentních kompozitních struktur</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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