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Vol. 162, Issue 1, January 2014, pp. 21-28

 

Bullet

 

Characterization of Langasite SAW Devices to Determine the Temperature and Strain Coefficients of Velocity
 

1 William WILSON, 2 Gary ATKINSON

1 NASA Langley Research Center, Hampton, VA, USA
2 Virginia Commonwealth University, Richmond, VA, USA
Tel.: +1 (804) 827-0185

E-mail: Gmatkins@vcu.edu

 

Received: 1 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems

 

Abstract: Surface acoustic wave sensors on langasite substrates are being investigated for aerospace applications. Characterization of langasite material properties must be performed before sensors can be flight tested in research vehicles. Analysis and empirical data have been used to determine the coefficients of velocity for both strain and temperature. This work presents temperature compensated strain results that are based upon the empirical values for the strain and temperature coefficients of velocity.

 

Keywords: Surface acoustic wave, SAW, Strain, Temperature, Langasite, Coefficient of velocity.

 

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