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WIRELESS SURFACE ACOUSTIC WAVE CORROSION SENSOR AND INTERROGATION SYSTEM FOR CONCRETE STRUCTURES

  • US 20130036821A1
  • Filed: 08/06/2012
  • Published: 02/14/2013
  • Est. Priority Date: 08/04/2011
  • Status: Active Grant
First Claim
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1. A surface acoustic wave sensor disposed in or on a material, the sensor comprising;

  • an antenna having a sacrificial link in at least one antenna element, wherein the sacrificial link is exposed to degrading elements within or on a surface of the material;

    a surface acoustic wave transducer responsive to an interrogation signal for generating an incident surface acoustic wave;

    a reflector responsive to the incident surface acoustic wave for creating a reflected surface acoustic wave;

    the reflected surface acoustic wave received by the transducer;

    the transducer for creating a response signal responsive to the reflected surface acoustic wave; and

    the response signal transmitted from the antenna, characteristics of the response signal dependent on a condition of the sacrificial link.

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