Optical fiber sensor capable of measuring stress-strain of metal accurately
An optical fiber sensor, metal stress technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems that affect the accuracy and long-term stability of strain measurement, the temperature effect is difficult to eliminate accurately, and the shear resistance is very poor. Improved accuracy and environmental adaptability, good strain measurement unidirectionality, and improved long-term stability
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[0038] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.
[0039] see Figure 1 to Figure 4 , the optical fiber sensor includes a strain elastic beam 1, the strain elastic beam 1 is annular, the strain elastic beam 1 has a first measurement fixed end 11 and a second measurement fixed end 12, the first measurement fixed end 11 is arranged on the strain elastic beam 1 on one side, the second measurement fixed end 12 is arranged on the other side of the strain elastic beam 1, the strain elastic beam 1 has an optical fiber fixed end, the optical fiber 3 is fixedly connected with the strain elastic beam 1 through the optical fiber fixed end, and the first measurement is fixed The line connecting the end 11 and the second measuring fixed end 12 is perpendicular to the axis of the optical fiber 3 . In order to improve the temperature compensation effect, the strain elastic beam 1 and the external metal stru...
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