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

Fiber optic sensing means for the detection and measurement of events such as dynamic loadings imposed upon elastic materials including cementitious materials, elastomers, and animal body components and/or the attrition of such elastic materials are provided. One or more optical fibers each having a deformable core and cladding formed of an elastomeric material such as silicone rubber are embedded in the elastic material. Changes in light transmission through any of the optical fibers due the deformation of the optical fiber by the application of dynamic loads such as compression, tension, or bending loadings imposed on the elastic material or by the attrition of the elastic material such as by cracking, deterioration, aggregate break-up, and muscle, tendon, or organ atrophy provide a measurement of the dynamic loadings and attrition. The fiber optic sensors can be embedded in elastomers subject to dynamic loadings and attrition such as commonly used automobiles and in shoes for determining the amount and frequency of the dynamic loadings and the extent of attrition. The fiber optic sensors are also useable in cementitious material for determining the maturation thereof.
 [1];  [2];  [3];  [2]
  1. (Lenoir City, TN)
  2. (Knoxville, TN)
  3. (Oak Ridge, TN)
Issue Date:
OSTI Identifier:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5374821
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Country of Publication:
United States
elastomeric; optical; fiber; sensors; method; detecting; measuring; events; occurring; elastic; materials; optic; sensing; means; detection; measurement; dynamic; loadings; imposed; including; cementitious; elastomers; animal; components; attrition; provided; fibers; deformable; core; cladding; formed; material; silicone; rubber; embedded; changes; light; transmission; due; deformation; application; loads; compression; tension; bending; cracking; deterioration; aggregate; break-up; muscle; tendon; organ; atrophy; provide; subject; commonly; automobiles; shoes; determining; amount; frequency; extent; useable; maturation; cementitious material; light transmission; optical fibers; fiber optic; optical fiber; materials including; elastomeric material; optic sensor; silicone rubber; sensing means; dynamic loadings; elastic material; cementitious materials; optic sensors; fiber sensors; elastic materials; including cementitious; fiber sensor; dynamic loading; /250/73/