Fiber bragg grating sensor network based large-scale structure body deformation measurement method
A fiber grating and sensor network technology, applied in measuring devices, optical devices, special data processing applications, etc., can solve problems such as sudden failure of the overall or partial structure, difficulty in judging the degree of structural damage, and complex failure mechanism of the structure, etc., to achieve Light weight, small size, simple curve fitting effect
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[0017] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so as to better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0018] The principle of structural deformation measurement, when an unknown force F acts on a point C on a simply supported beam AB, the deformation of the beam is as follows: figure 1 Shown:
[0019] The bending deformation of the simply supported beam is shown, the axis of the beam changes from the original straight line to the curve, and the bent axis is called the deflection axis. The line displacement of a point whose coordinate is x on the beam axis is deformed in the direction perpendicular to the beam axis can be expressed as y(x), which is called the deflection of the point. For the beam st...
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