Affiliations: [a] School of Electromechanical Engineering, Beifang
University of Nationalities, Yinchuan, Ningxia, China | [b] School of Information and Communication Engineering,
North University of China, Taiyuan, Shanxi, China | [c] School of Mechanical Engineering, Taiyuan University
of Science and Technology, Taiyuan, Shanxi, China | [d] State Key Laboratory for Strength and Vibration of
Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, China
Correspondence:
[*]
Corresponding author: Dongli Zhang, School of Electromechanical
Engineering, Beifang University of Nationalities, 204 North Wenchang Road
Xixia District, 750021 Yinchuan, Ningxia, China. Tel.: +86 351 2391564;
E-mail: zdlsir@139.com
Abstract: In order to make an effective on-line thickness measurement of thick
coating in hemispherical steel shells, a strategy using combined laser and eddy
current (EC) sensors based on displacement differential method was proposed. To
enhance the measuring precision, an EC displacement sensor with large test
range was adopted and the effect of shell curvature on its output was reduced
by applying the polynomial curve fitting. Its feasibility was verified by
experimental results.
