中国机械工程2018，Vol.29Issue(6)：639-644,6.DOI:10.3969/j.issn.1004-132X.2018.06.002
已知深度范围缺陷的选频带脉冲涡流检测方法
Frequency-band-selecting Pulsed Eddy Current Testing Method for Detection of Defects under a Certain Depth Range
摘要
Abstract
To further improve the detectability of local wall thinning defects under certain depth ranges,a FSPECT method was proposed.The principles of FSPECT method were introduced.The way of selecting the excitation signals of FSPECT was described in detail.The detection sensitivities of local wall thinning defects under certain depth ranges of the traditional square wave PECT and FSPECT were compared.The lift-off intersection point of FSPECT was investigated.The numerical experimental results show that the sensitivity of FSPECT is higher than that of the traditional PECT for testing local wall thinning defects under certain depth ranges.The lift-off intersection point of FSPECT may reflect the depth of local wall thinning defects.关键词
频率/选频带脉冲涡流检测/检测灵敏度/提离交叉点Key words
frequency/frequency-band-selecting pulsed eddy current testing(FSPECT)/detection sensitivity/lift-off intersection point分类
矿业与冶金引用本文复制引用
赵莹,解社娟,田明明,仝宗飞,李勇,陈振茂..已知深度范围缺陷的选频带脉冲涡流检测方法[J].中国机械工程,2018,29(6):639-644,6.基金项目
国家自然科学基金资助项目(51407132,51277139,51577139) （51407132,51277139,51577139）
中央高校基本科研业务费专项资金资助项目 （）
