基于灵活传感纤维的应变测量技术和精密校准实验
1National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China.
Sensors (Basel, Switzerland)
|June 27, 2024
概括
本研究对光纤传感技术进行校准,包括光纤格子 (FBG) 和光频域反射计 (OFDR),以准确测量应变. 结果显示高精度和稳定性,支持光纤传感应用.
科学领域:
- 光学工程是指光学工程.
- 材料科学 材料科学 材料科学
- 仪器化 仪器化 仪器化
背景情况:
- 应变测量的准确性对于光纤传感应用至关重要.
- 光纤网格 (FBG) 和光频域反射计 (OFDR) 是关键技术.
- 需要校准和分析来验证它们的准确性.
研究的目的:
- 校准和分析FBG和OFDR的精度,用于应变测量.
- 将这些光纤方法与传统的电阻应变计 (ESG) 进行比较.
- 为推进光纤传感技术提供基础数据.
主要方法:
- 实验是使用同等强度的标准光束进行的.
- 在装载和卸载周期期间收集了FBG和OFDR应变数据.
- 有限元素理论用于数据分析和验证.
主要成果:
- 光纤应变数据显示出良好的连续性,线性和周期性稳定性.
- 在重复加载后,应变试验数据的误差小于2%.
- R平方值超过了0.998,表明出色的线性.
- FBG和分布式光纤显示稳定的可重复性准确性.
结论:
- FBG和OFDR在应变测试中表现出高准确性和稳定性.
- 该研究验证了光纤传感技术的性能.
- 这些发现支持光纤传感在工程中的更广泛应用.
相关概念视频
Instrument Calibration
171
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
171
Measurements of Strain
666
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
666
Distance Corrections
27
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
27
Distance Measurements by Taping
32
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
32


