徐州工程学院学报（自然科学版）2024，Vol.39Issue(1)：34-43,10.
脉冲涡流检测频域提离交叉点的测厚研究
Thickness Measurement of Frequency Domain Lift-off Point of Intersection Detected by Pulsed Eddy Current Testing
摘要
Abstract
Addressing the issue that the techniques used to obtain time domain LOI(lift-off point of intersection)in pulsed eddy current detection signals for ferromagnetic and non-ferromagnetic materials are inconsistent and the uniformity in extracting time domain LOI signal characteristics is limited,this paper studies the influence law of probe lift-off change on the amplitude spectrum,phase spectrum,and real part spectrum of pulsed eddy current differential signals by analyzing the pulsed eddy current differential signals of ferromagnetic and non-ferromagnetic materials.It obtains the frequency domain LOI in the frequency spectrum of pulsed eddy current differential signals and further analyses the feasibility of measuring the thickness of the frequency domain LOI,providing method guidance for unifying and expanding the acquisition method of LOI and improving the measurement range of LOI.关键词
脉冲涡流检测/提离交叉点/铁磁性材料/非铁磁性材料/频域分析Key words
pulsed eddy current detection/lift-off point of intersection/ferromagnetic materials/non-ferromagnetic materials/frequency-domain analysis分类
矿业与冶金引用本文复制引用
闻东东,李婉婉,邹庆晓,闫苏..脉冲涡流检测频域提离交叉点的测厚研究[J].徐州工程学院学报（自然科学版）,2024,39(1):34-43,10.基金项目
江苏省高等学校自然科学研究面上项目(21KJB470031) （21KJB470031）
