Comparison of Composite Material Degradation Assesment Methods Using Acoustic Analysis and Laser Vibrometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F12%3A00193775" target="_blank" >RIV/68407700:21260/12:00193775 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378297:_____/12:00381307

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Composite Material Degradation Assesment Methods Using Acoustic Analysis and Laser Vibrometry

Popis výsledku v původním jazyce

Assessment of degradation rate of material can be carried out by many experimental techniques differing in complexity and sophistication. A relatively simple method based on acoustic analysis is described in this contribution. Degradation of material's properties due to fatigue loading is detectable in decrease of their modulus of elasticity that can be derived from natural frequencies of specimens, which were acquired by the presented method. These measurements utilize self-designed device capable of specimen excitation and acquisition of its vibration. The recorded signal is then processed by spectral analysis enabling determination of natural frequencies. Usefulness of the above mentioned acoustic method can be seen in the fact that the measured changes of material's parameters are comparable to those obtained by laser vibrometry, which is by several orders more expensive technique.

Název v anglickém jazyce

Comparison of Composite Material Degradation Assesment Methods Using Acoustic Analysis and Laser Vibrometry

Popis výsledku anglicky

Assessment of degradation rate of material can be carried out by many experimental techniques differing in complexity and sophistication. A relatively simple method based on acoustic analysis is described in this contribution. Degradation of material's properties due to fatigue loading is detectable in decrease of their modulus of elasticity that can be derived from natural frequencies of specimens, which were acquired by the presented method. These measurements utilize self-designed device capable of specimen excitation and acquisition of its vibration. The recorded signal is then processed by spectral analysis enabling determination of natural frequencies. Usefulness of the above mentioned acoustic method can be seen in the fact that the measured changes of material's parameters are comparable to those obtained by laser vibrometry, which is by several orders more expensive technique.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP105%2F10%2F2159" target="_blank" >GAP105/10/2159: Modely membránového působení stropních desek vystavených požáru</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Engineering Mechanics 2012

ISBN

978-80-86246-39-0

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

231-237

Název nakladatele

Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic

Místo vydání

Prague

Místo konání akce

Svratka

Datum konání akce

14. 5. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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