INTERNAL FRICTION IN MAGNESIUM COMPOSITES BY RESONANCE SPECTROSCOPY
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F08%3APU77830" target="_blank" >RIV/00216305:26220/08:PU77830 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
INTERNAL FRICTION IN MAGNESIUM COMPOSITES BY RESONANCE SPECTROSCOPY
Popis výsledku v původním jazyce
We have analyzed magnesium composites structure by internal friction at sample resonance frequency. The first, second and third resonance signal was measured by FFT. Results measured on two identical samples of magnesium composites, denoted as H01 and H02 are presented. We have applied aging process on sample H02 by liquid nitrogen at temperature 77 K, where the sample was dipped for 15 minutes. The differences of damped harmonic motion parameters for three harmonic signals were fitted by standard equation for damped harmonic motion. The forced vibrations amplitudes for the first harmonic signal are similar for both samples. We can see in our case that the amplitude of the forced vibrations of both samples is the lowest for the second harmonic signal.Sample H02 has much higher amplitude for the third harmonic signal then sample H01. Amplitude of third harmonic signal increases due to ageing. If we compare the values of vibration damping coefficients for different harmonics then we fou
Název v anglickém jazyce
INTERNAL FRICTION IN MAGNESIUM COMPOSITES BY RESONANCE SPECTROSCOPY
Popis výsledku anglicky
We have analyzed magnesium composites structure by internal friction at sample resonance frequency. The first, second and third resonance signal was measured by FFT. Results measured on two identical samples of magnesium composites, denoted as H01 and H02 are presented. We have applied aging process on sample H02 by liquid nitrogen at temperature 77 K, where the sample was dipped for 15 minutes. The differences of damped harmonic motion parameters for three harmonic signals were fitted by standard equation for damped harmonic motion. The forced vibrations amplitudes for the first harmonic signal are similar for both samples. We can see in our case that the amplitude of the forced vibrations of both samples is the lowest for the second harmonic signal.Sample H02 has much higher amplitude for the third harmonic signal then sample H01. Amplitude of third harmonic signal increases due to ageing. If we compare the values of vibration damping coefficients for different harmonics then we fou
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
BE - Teoretická fyzika
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GA106%2F07%2F1393" target="_blank" >GA106/07/1393: Nelineární ultrazvuková spektroskopie kompozitů a slitin na bázi hořčíku</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2008
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
6th Workshop NDT 2008
ISBN
978-80-7204-610-2
ISSN
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e-ISSN
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Počet stran výsledku
4
Strana od-do
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Název nakladatele
Marta Kořenská and Luboš Pazdera
Místo vydání
Brno, Czech Republic
Místo konání akce
Brno
Datum konání akce
22. 11. 2008
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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