Fiber bragg grating surface metallization device

Abstract

The invention discloses a fiber bragg grating surface metallization device comprising a water bath kettle. Water is contained in the water bath kettle, a beaker is further supported in the water bathkettle, and the water surrounds the beaker and is used for heating the beaker. A supporting plate is arranged at the top of the beaker, a plating solution for chemical plating is contained in the beaker, and a fixing frame is vertically arranged on the supporting plate and inserted into the plating solution. A fiber bragg grating is bonded to the fixing frame through a glue bonding piece, a to-be-plated part of the fiber bragg grating is arranged in the plating solution in the beaker and is in a straightened state under the effect of the fixing frame and the glue bonding piece. The fiber bragggrating surface metallization device has the beneficial effects that according to the fiber bragg grating surface metallization device, in the chemical plating process, the to-be-plated part of the fiber bragg grating can be effectively straightened, and thus stress of the fiber bragg grating subjected to film plating is prevented from being over large.

Description

technical field [0001] The invention relates to the technical field of fiber grating surface treatment, in particular to a fiber grating surface metallization treatment device. Background technique [0002] Fiber Bragg gratings are widely used in communication and sensing fields because of their advantages such as low signal loss, strong anti-interference ability, small size, and light weight. Compared with traditional sensors, fiber grating sensors are widely used in large-scale civil engineering, aerospace and other military or civilian fields because of their advantages such as electrical insulation, non-inductance, and large capacity; and because of their stable chemical properties and strong anti-interference ability , High sensitivity, especially suitable for monitoring and control devices such as safety alarms and fault diagnosis in harsh environments. [0003] Although FBG sensors have been widely used, there are still some problems in how to stably fix FBG sensors ...

AI Technical Summary

Problems solved by technology

Traditional fixation is direct bonding with adhesive tape or other adhesives. This method has many defects in the process of use: first, it cannot be completely fixed, resulting in displacement between the sensor in the smart structure and the object under test when it is stressed, making the The measurement data is distorted; secondly, adhesives or tapes are organic substances, which are easy to age and cannot be used for a long time

[0006] However, metallization of the fiber grating surface through chemical plating requires roughening of the surface. This method of corroding the fiber surface with hydrofluoric acid or its mixed acids destroys the outer structure of the fiber to a certain extent. It will lead to the reduction of its sensing sensitivity and measurement accuracy, and hydrofluoric acid is a huge poison, which will cause huge pollution to the environment

[0007] The existing electroless plating device cannot effectively straighten the fiber grating to be plated, and the stress of the fiber grating after coating is too large

Images