A high temperature full stress-strain curve test method and device based on optical fiber

A technology of stress-strain curve and strain curve, which is applied in the field of high-temperature full stress-strain curve testing, and can solve problems such as measurement errors

Active Publication Date: 2022-04-29
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] The purpose of the present disclosure is to provide an optical fiber-based high-temperature full stress-strain curve testing method and device, a computer-readable storage medium, and electronic equipment, so as to overcome the lack of accurate stress measurement data in related technologies at least to a certain extent as a support, This will create a large measurement error problem

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  • A high temperature full stress-strain curve test method and device based on optical fiber
  • A high temperature full stress-strain curve test method and device based on optical fiber
  • A high temperature full stress-strain curve test method and device based on optical fiber

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[0058] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many 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.

[0059]Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities m...

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Abstract

The present disclosure relates to the technical field of optical fiber detection, and in particular to a method and device for testing an optical fiber-based high-temperature full stress-strain curve. The tensile load applied to the fiber optic specimen at different temperatures and the cavity length of the fiber optic sensor in the fiber optic specimen at each temperature; according to the tensile load at each temperature and the cavity length of the fiber optic sensor in the fiber optic specimen, calculate the stress and strain, and fit the stress-strain curve. The technical solutions of the embodiments of the present disclosure carry out tensile experiments on optical fiber specimens at different temperatures, and calculate the stress and strain of the optical fiber sensor at each temperature according to the obtained cavity length and tensile load, which can provide optical fiber sensors at different temperatures. The stress-strain analysis provides accurate data, which can truly measure the actual stress and strain of the fiber optic sensor under different temperature environments.

Description

technical field [0001] The present disclosure relates to the technical field of optical fiber detection, in particular, to a method and device for testing a high temperature full stress-strain curve based on an optical fiber. Background technique [0002] Optical fiber sensing technology has developed rapidly and has been widely used in railways, ships, aerospace, coal mines and other projects. In the field of high-temperature materials, it is also an urgent problem to truly measure the actual stress and strain of the structure in the high-temperature environment. [0003] At present, the analysis of high temperature stress and strain is mostly based on theoretical calculations and computer simulations, lacking accurate stress measurement data as a support, which will cause large measurement errors. [0004] Therefore, it is necessary to design a new high temperature full stress-strain curve testing method and device based on optical fiber. [0005] It should be noted that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18G01N3/08G01N3/06G01L1/24G01B11/16
CPCG01N3/18G01N3/08G01N3/068G01B11/161G01L1/242G01N2203/0017G01N2203/0075G01N2203/0222G01N2203/028G01N2203/0641G01N2203/0676G01N2203/0682
Inventor 温志勋李飞刘传广吴家骥艾长胜岳珠峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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