Analysis of dependence between stress change and resonance frequency for self-excited acoustical system
PBN-AR
Instytucja
Wydział Inżynierii Mechanicznej i Robotyki (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Diffusion and Defect Data. Solid State Data. Part B. Solid State Phenomena
ISSN
1012-0394
EISSN
1662-9779
Wydawca
Scitec Publications ; Trans Tech Publications
DOI
Rok publikacji
2014
Numer zeszytu
Strony od-do
194--199
Numer tomu
208
Link do pełnego tekstu
Liczba arkuszy
0.42
Autorzy
Pozostali autorzy
+ 1
Słowa kluczowe
EN
autodyne effect
self-excited systems
stress monitoring
Streszczenia
Język
EN
Treść
Continuous supervision of mechanical endurance is very important in the time of the advance constructions. The Self-excited Acoustical System (SAS) is a kind of a self-oscillating system, which uses the auto-resonance phenomena for measurement of construction stress changes. The advantage of this solution is the ability to apply it to a wide spectrum of materials from elastoplasts to brittle ones where the conventional techniques cannot be used. The Self-excited Acoustical System is characterized by its great sensitivity in comparison with the traditional techniques. This paper presents the results of the research carried out on a metal bar expanded by variable force. The dependence between the relative elongation of the sample and the transition time of the wave was elaborated. The delay occurring during a wave transition has a direct impact on the value of self-oscillation frequency. The influence of the coupling force between a metal sample and the wave receiver was also analysed.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:076664
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