Experimental Analysis of the Piezomagnetic Properties of Ferromagnetic Steels Subjected To Cyclic Tensile Stress
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Published:2022-06-01
Issue:6
Volume:64
Page:334-340
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ISSN:1354-2575
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Container-title:Insight - Non-Destructive Testing and Condition Monitoring
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language:en
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Short-container-title:insight
Author:
Bao Sheng1,
Li Yan1,
Zhao Zhengye1,
Jiang Tao1,
Lou Huangjie1
Affiliation:
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang, China
Abstract
The objective of this research is to investigate the evolution of the piezomagnetic field of 30CrNiMo8 steel under cyclic tensile stress with variable amplitudes and asymmetrical cyclic tensile stress. The piezomagnetic field signal of an initially undemagnetised 30CrNiMo8 steel specimen
was recorded simultaneously during the whole loading process. It was found that the magnetic field variation is in contrast to the variation of the applied stress during the elastic stage. However, the magnetic field variation started to be consistent with the variation of the applied stress
when approaching and entering the plastic stage. A reasonable explanation was given for understanding this phenomenon. The Villari reversal point and the tail reversal point occurred during the plastic stage, which can be used to characterise the transition state from the elastic to plastic
stage. The variations of the Villari reversal point and the tail reversal point under cyclic tensile stress with variable amplitudes were slightly different from those under asymmetrical cyclic tensile stress.
Publisher
British Institute of Non-Destructive Testing (BINDT)
Subject
Materials Chemistry,Metals and Alloys,Mechanical Engineering,Mechanics of Materials