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Ionic Polymer Transducers in sensing: the streaming potential hypothesis

  • Weiland, Lisa Mauck (Department of Mechanical Engineering and Materials Science, University of Pittsburgh) ;
  • Akle, Barbar (Department of Mechanical Engineering, Lebanese American University)
  • Received : 2008.07.07
  • Accepted : 2009.08.01
  • Published : 2010.04.25
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Abstract

Accurate sensing of mechanical strains in civil structures is critical for optimizing structure reliability and lifetime. For instance, combined with intelligent control systems, electromechanical sensor output feedback has the potential to be employed for nondestructive damage evaluation. Application of Ionic Polymer Transducers (IPTs) represents a relatively new sensing approach with more than an order of magnitude higher sensitivity than traditional piezoelectric sensors. The primary reason this sensor has not been widely used to date is an inadequate understanding of the physics responsible for IPT sensing. This paper presents models and experiments defending the hypothesis of a streaming potential sensing mechanism.

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References

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