.png){kind=icon}
返回
Design method for a GMR-based eddy current sensor with optimal sensitivity
.png){kind=icon}
PRE
AI
DOI：10.1016/j.sna.2020.112348.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Giant magnetoresistance (GMR) sensors have been used in non-destructive testing based on eddy current (NDT-EC). The low-pass filtered GMR-based NDT-EC have been successfully used to estimate the dimensions of artificial near-side cracks in aluminum plates. In this paper, an experimental study has been carried out in order to optimize the characteristics of the probe to improve its sensitivity. It is proposed a new design method for the low-pass filtered GMR-based eddy current probe. Experimental measurements were performed along artificial notches with different widths and depths in three aluminum plates. The asymmetry of the probe is analyzed in detail, giving that the operating point of the probe depends strongly on the asymmetry between the GMR end the Coil axis. The influence of the excitation coil parameters on the average sensitivity of the GMR-based EC probe is established. The outcomes revealed the strong dependence of the probe sensitivity to the inner diameter and filling factor of the excitation coil. Therefore, the methodology for selecting the inner diameter and the filling factor of the excitation coil and the GMR-coil asymmetry value are proposed. The average sensitivity of the designed probe using the proposed methodology is twice as high as the sensitivity of a non-optimized probe. (C) 2020 Elsevier B.V. All rights reserved.
Keyword:
Non-destructive testing
Probe based-eddy current testing
GMR Sensor
Magnetics sensors
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.9
论文数:
1.5W
被引数:
3.3W
机构
引用论文
.png){kind=icon}
分享收藏分享收藏分享收藏The Impact of Immigration and Acculturation on the Mental Health of Asian Americans: Overview of Epidemiology and Clinical Implications移民和文化适应对亚裔美国人心理健康的影响：流行病学概述及临床意义
PREAI
分享收藏
查看更多内容