Device and method for health monitoring of an area of a structural element, and structure adapted for health monitoring of an area of a structural element of said structure
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United States of America Patent
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Dec 2, 2008
Grant Date -
Oct 13, 2005
app pub date -
Mar 30, 2004
filing date -
Mar 30, 2004
priority date (Note) -
Expired
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Abstract
Device for health monitoring of a structure comprising a dielectric material of permittivity .epsilon..sub.r, comprising a source of electromagnetic radiation, generating an electric field in the structure a detector measuring a component of the electric field, calculation means giving the value of .epsilon..sub.r on the basis of the said component.
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