Abstract
Monte Carlo simulations were performed for three-dimensional Ising model to study the relationships between magnetic Barkhausen noise and elastic stress of steel. The magnetization process was simulated and the dimensionless magnetic Barkhausen noise was calculated by the differentiation of magnetization. Coupling constant of energy exchange in Ising model is considered to be inversely proportional to applied tensile stress. The simulation results show that as coupling constant decreases, the magnetic Barkhausen noise increases, as proved by the experimental results.
Highlights
Non-destructive evaluation (NDE) technologies are widely used for assessing microstructure and mechanical properties of engineering parts
magnetic Barkhausen noise (MBN) is caused by dismade, where K is the Boltzmann number and T continuous transverse of domain wall under alternating is the Kelvin temperature; (2) in the beginning, magnetic field, so this discontinuous process is realized a number of sweeps are performed to reach the by averaging results in 100 Monte Carlo step (MCS) which is half of 200 equilibrium; and (3) once the equilibrium is MCS
This is reasonable as strain is applied along the direction of applied magnetic field, magnetic domains are separated more compared and the coupling between spins becomes weaker in the direction of stress
Summary
Non-destructive evaluation (NDE) technologies are widely used for assessing microstructure and mechanical properties of engineering parts. Keywords Barkhausen noise, stress, simulation, Monte Carlo, Ising model Among various NDE techniques, magnetic Barkhausen noise (MBN) is well known to be sensitive to several mechanical properties such as stress and hardness of ferromagnetic materials.
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