Characterisation of the piezomagnetic response to low-cycle fatigue of ferromagnetic steels

Bao, Sheng; Gu, Yibin; Hu, Shengnan

doi:10.1784/insi.2018.60.7.369

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous work in this direction used specimens with rather large volumes under load ( V specimen ∼few cm 3 ). This hampers a more detailed mechanistic understanding and its correlation to the magnetic response with damage because localized defect events, such as macroscopic crack initiation (typically a multiple of grain size), occur in larger volumes [9][10][11][12]. In contrast, we investigate magnetic stray fields originating from fatigue loading of mesoscale ferromagnetic specimens ( V specimen ∼ 0.1 mm 3 ).…”

Section: Introductionmentioning

confidence: 99%

Optically Pumped Magnetometer Measuring Fatigue-Induced Damage in Steel

et al. 2022

View full text Add to dashboard Cite

Uniaxial fatigue testing of micro-mechanical metallic specimens can provide valuable insight into damage formation. Magnetic and piezomagnetic testing are commonly used for qualitative characterization of damage in ferromagnetic specimens. Sensitive and accurate measurements with magnetic sensors is a key part of such a characterization. This work presents an experimental setup to induce structural defects in a micro-mechanical fatigue test. Simultaneously, the resulting piezomagnetic signals are measured during the complete lifetime of the tested specimen. The key component is a highly sensitive optically pumped magnetometer (OPM) used to measure the piezomagnetic hysteresis of a small specimen whose structural defects can be analyzed on a small scale by other metallographic characterization methods as well. This setup aims to quantify the magnetic signatures of damage during the fatigue process, which could enable non-destructive mechanical testing of materials. This paper reports the initial results obtained from this novel micro-magneto-mechanical test setup for a ferritic steel specimen.

show abstract

Section: Introductionmentioning

confidence: 99%

Optically Pumped Magnetometer Measuring Fatigue-Induced Damage in Steel

et al. 2022

View full text Add to dashboard Cite

show abstract

Piezomagnetic Behavior Corresponding to the Variations of the Toughness of X70 Steel Under Cyclic Loadings

Bao¹,

Zhao²,

Li³

2023

View full text Add to dashboard Cite

The goal of this study is to investigate magnetic field characteristics corresponding to variations of the toughness of X70 pipeline steel under cyclic loading. After a series of stress-controlled cyclic loadings, the specimens were subjected to static tensile tests. Changes in the magnetic field were recorded simultaneously during the test. The results suggest that cyclic loadings will reduce the toughness of the material. The initial value and slope of the magnetic field-strain curve obtained in the static tensile test are related to the number of cyclic loadings. The evolutions of magnetic field and the stress-strain curve can reflect variations in the toughness of materials. Compared with the stress-strain curve, the magnetic field demonstrates the fatigue degradation process more markedly. The high sensitivity of the magnetic field to toughness may be used to estimate the degree of fatigue damage of steel.

show abstract

Characterisation of the piezomagnetic response to low-cycle fatigue of ferromagnetic steels

Cited by 2 publications

References 0 publications

Optically Pumped Magnetometer Measuring Fatigue-Induced Damage in Steel

Optically Pumped Magnetometer Measuring Fatigue-Induced Damage in Steel

Piezomagnetic Behavior Corresponding to the Variations of the Toughness of X70 Steel Under Cyclic Loadings

Contact Info

Product

Resources

About