title: Frequency feature based quantification of defect depth and thickness.
abstract: This study develops a frequency feature based pulsed eddy current method. A frequency feature, termed frequency to zero, is proposed for subsurface defects and metal loss quantification in metallic specimens. A curve fitting method is also employed to generate extra frequency components and improve the accuracy of the proposed method. Experimental validation is carried out. Conclusions and further work are derived on the basis of the studies.
authors.affiliation: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Shulin
authors.initials: S
authors.lastname: Tian
authors.affiliation: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Chen
authors.affiliation: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Libing
authors.initials: L
authors.lastname: Bai
authors.affiliation: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Lulu
authors.initials: L
authors.lastname: Tian
authors.affiliation: School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom.
authors.forename: Hong
authors.initials: H
authors.lastname: Zhang