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Thermal-mechanical coupling experimental test device for high-temperature optical fiber sensor

A technology of optical fiber sensor and testing device, which is applied in the direction of instruments, etc., and can solve problems such as difficulties, fragile packaging in the annealing section, etc.

Active Publication Date: 2017-01-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] High temperature fiber optic sensors have many advantages beyond doubt, but there are also shortcomings such as fragile packaging in the annealing section. Before high temperature fiber optic sensors are used in the aerospace field, we must conduct a large number of experiments to explore the characteristics of high temperature fiber optics and simulate tests under real working conditions. method

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  • Thermal-mechanical coupling experimental test device for high-temperature optical fiber sensor
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  • Thermal-mechanical coupling experimental test device for high-temperature optical fiber sensor

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Embodiment Construction

[0031] The implementation of the present invention is such that through the flexible combination of the adjustable clamping device and the pressure sensor, the pressure of known magnitude can be applied to the two directions of the test piece respectively, and the high-energy laser equipment can provide heat for the test piece. Environment, by bonding thermocouples on the surface of the test piece to monitor the temperature response of the surface, this experimental device provides a known thermomechanical coupling field for the test piece, and provides a typical thermomechanical coupling measurement environment for the high temperature optical fiber sensor.

[0032] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

[0033] figure 1 A schematic diagram of the high-temperature fixture of the test piece is given. The U-shaped groove 101 is a groove processed by a steel structure. One end of the U-shaped groove has ...

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Abstract

A testing device for a thermal coupling experiment of a high-temperature optical fiber sensor comprises a high-temperature fixture component, a testing structure component, an adhesion platform and an experiment table. On the experiment table, the high-temperature fixture component clamps the testing structure component to enable the same to be on the same horizontal plane as the adhesion platform. The testing device can provide a high-temperature thermal environment close to a real working condition for the high-temperature optical fiber sensor, and a measuring method and a control method for thermal environment temperature are established. The testing device can also apply constraining force to a test piece in the direction parallel to the optical fiber sensor and the direction vertical to the optical fiber sensor respectively.

Description

[0001] technical background: [0002] The working environment of the aircraft is often extremely harsh, so the external structural materials of the aircraft must have excellent heat resistance and load-bearing performance. Ultra-high temperature ceramics, superalloys and other high-temperature resistant materials are widely used in the aerospace field because of their superior performance in high-temperature environments. It is widely used in materials, but the temperature response test methods of its materials under high temperature conditions are relatively limited. High-temperature fiber grating sensors have the advantages of strong anti-electromagnetic interference, small size, good corrosion resistance, strong multiplexing ability, and long transmission distance, so they are widely used in the field of structural health monitoring. [0003] High temperature fiber optic sensors have many advantages beyond doubt, but there are also disadvantages such as fragile packaging and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00
Inventor 解维华王利彬彭焘孟松鹤金华易法军
Owner HARBIN INST OF TECH