优化的单边磁共振传感器与恒定梯度及其在复合绝缘体中的应用
Pan Guo1, Chenjie Yang1, Jiamin Wu2,3
1College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
本研究介绍了一种优化的磁共振传感器,用于评估电网中的复合绝缘体老化. 新的传感器有效地可视化了通过T2衰变的衰老,有助于电网维护.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 复合绝缘体是电网中的关键组件,它们的老化会影响电网的可靠性.
- 评估绝缘体老化对于防止故障和确保电网稳定性至关重要.
- 目前用于评估绝缘体衰老的方法在精度和范围上可能存在局限性.
研究的目的:
- 开发和优化单边磁共振传感器,用于评估复合材料绝缘体的老化.
- 增强磁场强度和射频 (RF) 场均质,以提高传感器性能.
- 用磁共振技术展示传感器在可视化绝缘体衰老方面的能力.
主要方法:
- 优化三磁阵列单边磁共振传感器,专注于磁场强度,射频场均性和梯度.
- 描述传感器的磁场特性,包括磁场强度,梯度和均性.
- 应用优化的传感器与卡尔-普尔塞尔-梅布姆-吉尔 (CPMG) 脉冲序列复合绝缘体样本.
- 分析T2分布以可视化T2衰变的绝缘体与不同的老化水平.
主要成果:
- 开发了一种优化的单边磁共振传感器,其磁场强度为139.74mT,在10mm×10mm面积上均度为0.75%.
- 传感器实现了2.318 T/m的梯度,使得原子核磁共振频率达到5.95 MHz.
- T2分布有效地可视化了T2衰变,与不同程度的复合绝缘体衰老相关.
结论:
- 优化的单边磁共振传感器是一种可行的工具,用于对复合绝缘体老化的非破坏性评估.
- 传感器可视化T2衰变的能力为复合材料绝缘体的老化过程提供了宝贵的见解.
- 这项技术可以有助于改善电网基础设施的监控和维护策略.
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