TY - JOUR

T1 - Quantitative Evaluation of Stress-Permeability Relation in Ferromagnetic Steel by Measuring Magnetic Flux Density near Material

AU - Sekiguchi, Kenichirou

AU - Saka, Masumi

AU - AbÉ, Hiroyuki

PY - 1994

Y1 - 1994

N2 - Measurement of stress based on the magnetoelastic interaction effect in ferromagnetic materials relies on a change in permeability due to the stress. A method for quantitatively evaluating the stress-permeability relation was proposed by combining measured magnetic flux density near a specimen with nonlinear analysis of the magnetic field by the finite-element method. First, the flux density near the specimen was measured in a low magnetic field independent of the detecting system. Next, the permeability was modeled by a linear function of the flux density. Also, the permeability was modeled to relate it with the stress in a linear form. Finally, the stress-permeability relation was determined quantitatively by comparing the measurement with the nonlinear analysis of the magnetic field based on the model of permeability.

AB - Measurement of stress based on the magnetoelastic interaction effect in ferromagnetic materials relies on a change in permeability due to the stress. A method for quantitatively evaluating the stress-permeability relation was proposed by combining measured magnetic flux density near a specimen with nonlinear analysis of the magnetic field by the finite-element method. First, the flux density near the specimen was measured in a low magnetic field independent of the detecting system. Next, the permeability was modeled by a linear function of the flux density. Also, the permeability was modeled to relate it with the stress in a linear form. Finally, the stress-permeability relation was determined quantitatively by comparing the measurement with the nonlinear analysis of the magnetic field based on the model of permeability.

KW - Detecting System

KW - Finite-Element Method

KW - Low Magnetic Field

KW - Magnetic Flux Density

KW - Magnetoelastic Interaction

KW - Nondestructive Inspection

KW - Nonlinear Problem

KW - Permeability

KW - Stress

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U2 - 10.1299/kikaia.60.1617

DO - 10.1299/kikaia.60.1617

M3 - Article

AN - SCOPUS:0028460843

SN - 0387-5008

VL - 60

SP - 1617

EP - 1623

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

IS - 575

ER -