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Elastomeric optical fiber sensors and method for detecting and measuring events occurring in elastic materials

  • US 5,374,821 A
  • Filed: 06/30/1993
  • Issued: 12/20/1994
  • Est. Priority Date: 06/30/1993
  • Status: Expired due to Fees
First Claim
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1. An optical fiber sensor for measuring a dynamic loading applied to a body of elastic material, comprising a body of elastic material, elongated optical fiber means formed of a core and cladding of an elastomeric material sufficiently fixedly embedded within the body of elastic material for conjunctive displacement therewith so that any movement in internal regions of the body of elastic material contiguous to regions of the embedded optical fiber means upon the application of a dynamic loading to the body of elastic material deforms the optical fiber means at a location thereon corresponding to the location of the movement in said regions with the amount of the deformation substantially corresponding to the extent of movement in the body of elastic material in said regions, light producing means coupled to the embedded optical fiber means for transmitting light therethrough, and light receiving means coupled to the embedded optical fiber means for receiving light transmitted therethrough with the amount of light received thereby being proportional to the amount of deformation of the optical fiber means for providing a signal indicative of the extent of movement occurring in said regions of the body of elastic material and corresponding to a measure of the dynamic loading applied to the body of elastic material in said regions.

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