Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1994-01-18
1996-01-02
Aftergut, Jeff H.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
156166, 156294, 156296, G01L 124, G01B 1116
Patent
active
054798280
ABSTRACT:
Disclosed is a structure at least partially comprising a composite material, the material being made by means of sheets of fibers embedded in a matrix, the different sheets forming plies of the material, the material comprising intrinsic means for the detection and localization of a mechanical irregularity, these means comprising at least one polarization-maintaining birefrigent optical fiber having a so-called slow axis and a so-called fast axis, embedded in the matrix and describing a known path inside the material, wherein the optical fiber is included inside a casing with an internal diameter that is greater than the external diameter of the fiber.
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Bonniau Philippe
Chazelas Jean
Estang Bernard
Lecuellet Jerome
Perrier Bernard
"Thomson-CSF"
Aftergut Jeff H.
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