Title :
Modelling of hysteresis and creep in SAW strain sensors
Author_Institution :
Transense Technol. plc, Bicester, UK
Abstract :
Shear strain transfer from a part surface to a SAW substrate is analyzed for a SAW strain sensor attached to the part by an elastic adhesive. An analytic expression for the strain transfer function is obtained. A viscoelasticity model for the adhesive is proposed that allows prediction of the shear strain sensor output as a function of time. The model gives good match of the theoretical values of creep/relaxation and hysteresis to those observed in SAW torque sensors.
Keywords :
adhesives; hysteresis; strain sensors; surface acoustic wave sensors; viscoelasticity; SAW strain sensor prediction; SAW substrate; SAW torque sensor; creep modelling; elastic adhesive; hysteresis modelling; shear strain transfer function; viscoelasticity model; Creep; Hysteresis; Sensors; Strain; Substrates; Surface acoustic waves; Torque; SAW strain sensor; adhesive; creep; hysteresis;
Conference_Titel :
Frequency Control Symposium (FCS), 2014 IEEE International
Conference_Location :
Taipei
DOI :
10.1109/FCS.2014.6859976
