Other

Chuang Li

Chunwei Zhang

Li Sun

Ziqiang Xu

Yinru Lv

Tianqi Liang

Chunyang Zhu

Zhongxin Su

Heming Zhang

Cuipeng Gu

An SMA-STF based viscous damper includes a first connector, a piston rod, a piston which is sheathed on the piston rod; a damping cylinder; first and second end covers which are respectively provided at two sides of the damping cylinder; a second connector which is fixedly connected to the second end cover; and first and second SMA springs which are respectively sheathed on the piston rod. The damping cylinder has first and second damping cavities between which the piston is arranged. One end of the piston rod passes through the first end cover and is connected to the first connector, and the other end passes through the second connector. The first and second SMA springs are respectively held in the first and second damping cavities in an elastic state. The first and second damping cavities are respectively filled with the STF.

SMA-STF based viscous damper

A fiber Bragg grating inclination sensor, including a semicircular substrate and a packaged fiber Bragg grating. The semicircular substrate is fixed on a first structural member. One endpoint of the semicircular substrate is bonded with one end of the packaged fiber Bragg grating, and the other end of the packaged fiber Bragg grating is connected to a second structural member. The first structural member is fixed to the second structural member perpendicular to the first structural member. The packaged fiber Bragg grating is arranged on a tangent to the semicircular substrate. The fiber Bragg grating sensor of the present invention has the advantages of anti-electromagnetic interference and high sensitiveness. The present invention has a simple structure, high measurement accuracy, good stability, thereby having broad application prospects.

Fiber bragg grating inclination sensor

A high-precision fiber Bragg grating dislocation sensor, including a fiber Bragg grating, a loose tube, a tension spring, a sliding rod, a positioning piece, a sheath, a stainless steel tube, a transmission rod and a fastener. The sliding rod, the tension spring, the positioning piece, the fiber Bragg grating and the sheath are connected in series, and are provided in the precision stainless steel tube successively. The mechanism of the dislocation sensor is that an elastic force, converted from the local uneven settlement of the settlement joint, is applied on the bare fiber Bragg grating, so that the bare fiber Bragg grating suffers an axial stress and a strain is generated by itself, and the central wavelength of the fiber Bragg grating is further changed, allowing for the monitoring of settlement.

High-precision fiber Bragg grating dislocation sensor

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Liaoning, China

Chuang Li