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Strain Guage and Fracture Indicator Based on Composite Film Including Chain-Structured Magnetically Active Particles

  • US 20100154556A1
  • Filed: 12/23/2009
  • Published: 06/24/2010
  • Est. Priority Date: 12/24/2008
  • Status: Abandoned Application
First Claim
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1. A strain gauge comprising:

  • a composite film having an axial direction and a thickness, comprisinga non-metallic matrix,magnetically active particles included in the non-metallic matrix,wherein at least a portion of the magnetically active particles form a chain structure oriented substantially parallel to the axial direction; and

    two or more leads affixed to the composite film, each affixed to the composite film a predetermined distance from another, so as to form a lead structure oriented substantially parallel to the axial direction, wherein each of the two or more leads is electrically coupled with at least one magnetically active particle in the chain structure.

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