脉冲涡流激励信号参数对检测能力的影响

赵 莹; 解社娟; 张东亮; 田明明; 吴 磊; 李 勇; 陈振茂

doi:10.11973/wsjc201610004

脉冲涡流激励信号参数对检测能力的影响

1.
西安交通大学机械结构强度与振动国家重点实验室, 陕西省无损检测结构完整性评价工程技术中心, 西安 710049
2.
西安交通大学机械工程学院, 西安 710049

基金项目:

国家磁约束聚变资助项目(2013GB113005)

国家自然科学基金资助项目(51407132, 51277139, 51577139)

详细信息

作者简介:
赵莹(1988-), 女, 硕士研究生, 主要研究方向为电磁无损检测方法。

中图分类号: TG115.28
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出版历程
- 收稿日期: 2016-06-21
- 刊出日期: 2016-10-09

Influence of Excitation Parameters on Detection Sensitivity for PECT

摘要

摘要: 脉冲涡流检测方法是近年来发展起来的一种新型无损检测技术, 检测时激励信号的参数选取对检测结果有一定影响。首先基于频域叠加法开发了脉冲涡流信号的快速算法; 然后, 分析了脉冲涡流激励信号的基频、占空比以及脉冲上升和衰减时间变化对检测灵敏度的影响, 并从激励信号的频谱特性角度分析了原因, 且给出了基频和占空比的选定原则。
- 脉冲涡流检测 /
- 基频 /
- 占空比 /
- 脉冲上升和衰减时间
Abstract: Pulsed eddy current testing (PECT) is a new nondestructive testing technology developed in recent years. Selection of appropriate parameters of excitation signals for PECT method has important effect on pickup signals. In this paper, the efficient numerical solver of PECT is developed based on frequency domain summation method at first. Then, the influences of fundamental frequency, duty ratio, pulsed rising time and falling time on detection sensitivity are investigated. In addition, the reason of the influences is analyzed from the viewpoint of frequency spectrum characteristics of excitation signals. Finally, the principle of how to choose appropriate fundamental frequency and duty ratio is proposed.
- PECT /
- Fundamental frequency /
- Duty ratio /
- Pulsed rising and falling time

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参考文献(10)

[1]	XIE She-juan, CHEN Zhen-mao, CHEN Hong-en, et al. Sizing of wall thinning defects using pulsed eddy current testing signals based on a hybrid inverse analysis method［J］. IEEE Transactions on Magnetics, 2013, 49:1653-1656.
[2]	徐平,罗飞路,张玉华,等.基于脉冲涡流检测技术的缺陷定量检测研究［J］.工业计量,2006,16(2):6-10.
[3]	XIE She-juan, CHEN Zhen-mao, WANG Li, et al. An inversion scheme for sizing of wall thinning defects from pulsed eddy current testing signals［J］. International Journal of Applied Electromagnetics and Mechanics, 2012, 39:203-211.
[4]	XIE She-juan, CHEN Zhen-mao, TAKAGI T, et al. Efficient numerical solver for simulation of pulsed eddy current testing signals［J］. IEEE Transactions on Magnetics［J］. 2011, 47:4582-4591.
[5]	XIE She-juan, CHEN Zhen-mao, TAKAGI T, et al. Development of a very fast simulator for pulsed eddy current testing signals of local wall thinning［J］. NDT&E International, 2012, 51:45-50.
[6]	LI Yong, LIU Xiang-biao, CHEN Zhen-mao, et al. A fast forward model of pulsed eddy current inspection of multilayered tubular structures［J］. International Journal of Applied Electromagnetics and Mechanic［J］. 2014, 45:417-423.
[7]	XIE She-juan, CHEN Zhen-mao, TAKAGI T, et al. Quantitativenon-destructive evaluation of wall thinning defect in double-layer pipe of nuclear power plants using pulsed ECT method［J］. NDT&E International, 2015, 75: 87-95.
[8]	LI Yong, TIAN Gui-yun, ANTHONY S. Fast analytical modelling for pulsed eddy current evaluation［J］. NDT&E International, 2008, 41(6):477-483.
[9]	李勇, 齐勇, 陈振茂, 等.基于脉冲涡流差分信号提离交汇点的亚表面层材质劣化检测技术理论研究［J］.无损检测, 2012, 34(7):1-5, 10.
[10]	陈飞,王志诚.悬索结构基频能量法分析［J］. 四川建筑, 2006, 26(4):83-84.

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脉冲涡流激励信号参数对检测能力的影响

作者简介: 赵 莹(1988-), 女, 硕士研究生, 主要研究方向为电磁无损检测方法。

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出版历程

Influence of Excitation Parameters on Detection Sensitivity for PECT

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出版历程

目录

作者简介:
赵莹(1988-), 女, 硕士研究生, 主要研究方向为电磁无损检测方法。