Affiliations: [a] State Key Laboratory for Strength and Vibration of
Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, China | [b] Deptment of Mechanical and Electrical Engineering,
Ningxia Polytechnic, Ningxia, Yinchuan, China
Correspondence:
[*]
Corresponding author: Zhenmao Chen, State Key Laboratory for
Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, 28
West Xianning Road, Xi'an 710049, Shaanxi, China. Tel./Fax: +86 29 82668736,
E-mail: [email protected]
Abstract: The phenomenon of damage-induced magnetization possesses good
application prospects in nondestructive testing and material evaluation
purpose, once the relationship between the mechanical damage and the induced
magnetization can be quantitatively established. As the magnetization can not
be measured directly, it is vital to reconstruct the distribution of the
magnetization within the materials from the measured magnetic field signals in
order to find the correlation. In this paper, an approach has been studied to
realize the reconstruction of damage-induced magnetization in a flat plate from
the magnetic field signals measured nearby the plate. A deterministic
optimization scheme of the steepest descent method has been developed for the
inversion in addition with a strategy dealing with the border-effect.
Reconstructions with both simulated and measured signals verified the validity
and efficiency of the proposed approach.
