Optical Fiber Strain Sensing Device
A sensing device and optical fiber strain technology, applied in the field of strain measurement, to achieve the effects of simple operation, reduced measurement cost, and simple and convenient fixing method
Active Publication Date: 2022-08-09
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
However, this method has many defects in terms of fixing firmness, measurement accuracy, etc.
Method used
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[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present disclosure.
[0033] In the figures, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0034] The described features, structures, or characteri...
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Abstract
The present disclosure provides an optical fiber strain sensing device, which belongs to the technical field of strain measurement. The optical fiber strain sensing device includes an optical fiber sensor and a fixing device, the fixing device includes a sensor fixing device and a sample fixing device, the sensor fixing device is used for fixing the optical fiber sensor, and the sample fixing device is used for fixing the to-be-to-be-fixed device. To test the sample, the sensor fixing device and the sample fixing device are detachably connected. The optical fiber sensor and the sample to be tested are indirectly fixed by the optical fiber fixing device and the sample fixing device. This fixing method is simple and convenient. Compared with coating high temperature glue and laser micro welding, the operation is simple and does not require professional background knowledge. It is suitable for on various staff. In the present disclosure, the sensor fixing device and the sample fixing device are detachably connected, so that the optical fiber sensor can be reused and the measurement cost is reduced.
Description
technical field [0001] The present disclosure relates to the technical field of strain measurement, and in particular, to an optical fiber strain sensing device. Background technique [0002] In the field of aerospace, some structural components of aircraft are under ultra-high temperature and heavy load conditions. In order to study whether the mechanical properties of special materials made of these structural components can meet the actual requirements, people have developed electronic extensometers, resistance strain gauges The strain of samples made of this special material under high temperature tensile, thermal fatigue, high temperature creep, etc. Among them, optical fiber strain sensors are widely used due to their advantages of high sensitivity, small size, corrosion resistance, and electromagnetic interference resistance. [0003] Currently, there are two most commonly used fiber optic strain sensors: one based on fiber Bragg gratings (FBG) and the other based on...
Claims
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IPC IPC(8): G01B11/16G01D5/353G01L1/24G01N3/06G01N3/08G01N3/18G02B6/46
CPCG01B11/161G01D5/35312G01L1/242G01N3/068G01N3/18G01N3/08G02B6/46G01N2203/0641G01N2203/0075
Inventor 温志勋艾长胜王俊东吴家骥李飞岳珠峰
Owner NORTHWESTERN POLYTECHNICAL UNIV