基于磁扰动状态下Q235钢应力梯度的无损表征

Translated title of the contribution: The Q235 Steel Stress Gradient Nondestructive Characterization Based on the Magnetic Perturbation

Jingyu Di, Cunfu He, Xiucheng Liu, Yungchun Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The stress nondestructive testing of ferromagnetic materials based on the electromagnetics principle has broad application prospects in engineering practice. By a new understanding of the incremental permeability concept, a perturbation magnetization method of ferromagnetic materials under the periodic magnetization process of a low-frequency strong magnetic field superimposed a high-frequency alternating weak magnetic field is proposed. By extracting the average incremental permeability during a magnetization period of the strong field, the stress gradient in pure bending state and the total amount of magneto-elastic energy distributed along the depth generated by a four-point bending device loaded with Q235 steel have been nondestructively characterized. Through two sets of parallel experiments under different parameter settings, it is verified that the proposed testing method can effectively detect the internal stress gradient of the specimen under loading conditions and the total amount of magneto-elastic energy distributed along the depth. The two sets of experimental results are general, indicating that the detection method is feasible, and has a certain practical value in engineering applications.

Translated title of the contributionThe Q235 Steel Stress Gradient Nondestructive Characterization Based on the Magnetic Perturbation
Original languageChinese (Traditional)
Pages (from-to)569-574
Number of pages6
JournalChinese Journal of Sensors and Actuators
Volume34
Issue number5
DOIs
Publication statusPublished - 2021 May

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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