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

Result code in 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>
Alternative codes found
RIV/68378297:_____/12:00381307
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Comparison of Composite Material Degradation Assesment Methods Using Acoustic Analysis and Laser Vibrometry
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/GAP105%2F10%2F2159" target="_blank" >GAP105/10/2159: Modelling of membrane action of floor slabs exposed to fire</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Engineering Mechanics 2012
ISBN
978-80-86246-39-0
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
231-237
Publisher name
Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic
Place of publication
Prague
Event location
Svratka
Event date
May 14, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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