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Vol. 11, Special Issue, April 2011, pp.23-33

 

Bullet

Surface Acoustic Wave Strain Sensor Model

 

1William WILSON, 2Gary ATKINSON

1NASA Langley Research Center, Hampton, VA, USA

2Virginia Commonwealth University, Richmond, VA, USA

Tel.: +1 (804) 827-0185

E-mail: Gmatkins@vcu.edu

 

 

Received: 10 December 2010   /Accepted: 15 March 2011   /Published: 5 April 2011

 

Abstract: NASA Langley Research Center is investigating Surface Acoustic Wave (SAW) sensor technology for harsh environments aimed at aerospace applications. To aid in development of sensors a model of a SAW strain sensor has been developed. The new model extends the modified matrix method to include the response of Orthogonal Frequency Coded (OFC) reflectors and the response of SAW devices to strain. These results show that the model accurately captures the strain response of a SAW sensor on a Langasite substrate. The results of the model of a SAW Strain Sensor on Langasite are presented.

 

Keywords: Surface Acoustic Wave, SAW, Transmission line models, Strain, Strain sensor

 

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