Surface acoustic wave stress sensors - designing analysis

• Autorzy: Filipiak J , Solarz L. , Steczko G.
• Języki publikacji: EN

Abstrakty

EN

Analysis of viability and application of Surface Acoustic Wave stress sensors (SAW-SSs) to operational safety of buildings and other engineering constructions is the main topic of the paper. SAW stress sensors (SAW-SSs) measure the stress existing on their surface measuring the delay of the SAW signal. The stress in SAW-SS is caused by the measured stress in elements of constructions. The idea of SAW delay lines is described in [1] for example. The information about acting stress is in intermediate frequency of two SAW-SSs working in the SAW generator [3]. This system diminishes influence of the temperature at the measurements. The relatively small intermediate frequency (about 100 kHz) may be easily transmitted at the relatively long distances (about some hundreds m) by concentric cables. SAW-SSs are bound to the linear or surface elements of constructions: beams, frames, plates or shells. Bending moments change the curvature of these elements. The changing curvature of these elements causes the change of strain and stress in the plate of the SAW-SSs. The SAW-SS may also be applied to the measurement of bending instability of rods in truss or lattice constructions. The warning systems signalling overstress or bending instability may be built using SAW-SSs.

Słowa kluczowe

EN

surface acoustic wave sensors; stress meters

• Wydawca: Silesian Division of Polish Acoustical Society
• Czasopismo: Molecular and Quantum Acoustics
• Rocznik: 2007
• Tom: Vol. 28
• Strony: 71--80
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Filipiak J

autor

Solarz L.

autor

Steczko G.

• Institute of Electronic and Control Systems, Technical University of Czestochowa, 17 Armii Krajowej Str., 02-240 Częstochowa, Poland,

Bibliografia

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