Long period fiber grating strain gauge for micro strain detection of high-temperature pipes
A fiber grating, long-period technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve problems such as long-period fiber grating strain gauges that have not yet been seen, and achieve the effect of simple structure, accurate and effective detection, and convenient installation.
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[0021] Attached below figure 1 -2 and the specific embodiment The present invention is described in further detail:
[0022] Long-period fiber grating strain gauges for micro-strain detection in high-temperature pipelines, such as figure 1 As shown, a metal substrate 1 is included, and the metal substrate 1 is H-shaped. The metal substrate 1 includes a first vertical beam 11, a second vertical beam 13, and is connected between the first vertical beam 11 and the second vertical beam 13. Between the beams 12, the first high-temperature long-period fiber grating 2 is longitudinally fixed on the first vertical beam 11, the second high-temperature long-period fiber grating 3 is laterally fixed on the beam 12, and the third high-temperature long-period fiber grating 4 is free at both ends. The ground is longitudinally fixed on the second vertical beam 13, and the first high-temperature long-period fiber grating 2, the second high-temperature long-period fiber grating 3, and the thi...
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