Strain or stress gauge and method for detecting strain or stress of structure using the same, and plastic composite material for foreknowing progress of breakdown of structure and method using the same
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United States of America Patent
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Jan 10, 1995
Grant Date -
N/A
app pub date -
Jul 24, 1992
filing date -
Aug 15, 1991
priority date (Note) -
Expired
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Abstract
A strain or stress gauge 1A is presented for measuring the stress of a structure or a member. The gauge 1A comprises a bundle of electric conductive fibers 3, and a pair of terminals 4, for measuring an electric resistance of the bundle of electric conductive fibers provided on both ends thereof. It presents a strain or stress gauge having a simple structure, which can be produced inexpensively, and its size can be chosen freely. It is possible to know not only the state of a strain or stress but also the history of stress in a structure or a structural member which, by the characteristics of a specific curve relating the stress/strain relationship of the gauge.
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