Optimization of fatigue damage indication in ferromagnetic low carbon steel

Ivan Tomáš, Ondřej Kovářík, Jana Kadlecová, G. Vértesy

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fatigue damage was investigated by the method of magnetic adaptive testing (MAT), which is based on the systematic measurement and evaluation of minor magnetic hysteresis loops. A large number of magnetic measurements were performed on a single reference series of low carbon steel flat samples, which were fatigued by cyclic bending in an identical way, up to an increasing level of fatigue damage. The measurements of the magnetic properties of these samples were repeated under varied conditions, including speed of magnetization of the samples, sample temperature during the measurement, choice of the evaluated signal, frequency of the voltage sampling, and range of the applied amplitudes of the magnetizing field/current. Special attention was turned to the influence of the thickness of the non-ferromagnetic spacers positioned between the surface of the samples and the flat fronts of the attached magnetizing yokes. On one hand, the spacers decrease the values of the induced signal and its derivatives, but on the other hand they substantially increase the reproducibility of the measurement and positively influence the shapes of the resulting degradation curves. Optimum conditions for the magnetic measurement of the fatigue damage were searched, found, and recommended. The results indicate the reliable applicability of MAT to detect early stages of the material fatigue, and to predict its residual lifetime.

Original languageEnglish
Article number095603
JournalMeasurement Science and Technology
Volume26
Issue number9
DOIs
Publication statusPublished - Sep 1 2015

Fingerprint

Fatigue Damage
low carbon steels
Low carbon steel
Fatigue damage
Steel
Carbon
indication
damage
optimization
Optimization
Adaptive Testing
Magnetic Measurements
Magnetic variables measurement
Deflection yokes
spacers
magnetic measurement
Magnetic hysteresis
yokes
fatigue (materials)
Residual Lifetime

Keywords

  • fatigue
  • ferromagnetic construction materials
  • magnetic non-destructive evaluation
  • residual lifetime

ASJC Scopus subject areas

  • Applied Mathematics
  • Instrumentation

Cite this

Optimization of fatigue damage indication in ferromagnetic low carbon steel. / Tomáš, Ivan; Kovářík, Ondřej; Kadlecová, Jana; Vértesy, G.

In: Measurement Science and Technology, Vol. 26, No. 9, 095603, 01.09.2015.

Research output: Contribution to journalArticle

Tomáš, Ivan ; Kovářík, Ondřej ; Kadlecová, Jana ; Vértesy, G. / Optimization of fatigue damage indication in ferromagnetic low carbon steel. In: Measurement Science and Technology. 2015 ; Vol. 26, No. 9.
@article{ba1f9f764940422ab9d3bccdbf2a1411,
title = "Optimization of fatigue damage indication in ferromagnetic low carbon steel",
abstract = "Fatigue damage was investigated by the method of magnetic adaptive testing (MAT), which is based on the systematic measurement and evaluation of minor magnetic hysteresis loops. A large number of magnetic measurements were performed on a single reference series of low carbon steel flat samples, which were fatigued by cyclic bending in an identical way, up to an increasing level of fatigue damage. The measurements of the magnetic properties of these samples were repeated under varied conditions, including speed of magnetization of the samples, sample temperature during the measurement, choice of the evaluated signal, frequency of the voltage sampling, and range of the applied amplitudes of the magnetizing field/current. Special attention was turned to the influence of the thickness of the non-ferromagnetic spacers positioned between the surface of the samples and the flat fronts of the attached magnetizing yokes. On one hand, the spacers decrease the values of the induced signal and its derivatives, but on the other hand they substantially increase the reproducibility of the measurement and positively influence the shapes of the resulting degradation curves. Optimum conditions for the magnetic measurement of the fatigue damage were searched, found, and recommended. The results indicate the reliable applicability of MAT to detect early stages of the material fatigue, and to predict its residual lifetime.",
keywords = "fatigue, ferromagnetic construction materials, magnetic non-destructive evaluation, residual lifetime",
author = "Ivan Tom{\'a}š and Ondřej Kov{\'a}ř{\'i}k and Jana Kadlecov{\'a} and G. V{\'e}rtesy",
year = "2015",
month = "9",
day = "1",
doi = "10.1088/0957-0233/26/9/095603",
language = "English",
volume = "26",
journal = "Measurement Science and Technology",
issn = "0957-0233",
publisher = "IOP Publishing Ltd.",
number = "9",

}

TY - JOUR

T1 - Optimization of fatigue damage indication in ferromagnetic low carbon steel

AU - Tomáš, Ivan

AU - Kovářík, Ondřej

AU - Kadlecová, Jana

AU - Vértesy, G.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Fatigue damage was investigated by the method of magnetic adaptive testing (MAT), which is based on the systematic measurement and evaluation of minor magnetic hysteresis loops. A large number of magnetic measurements were performed on a single reference series of low carbon steel flat samples, which were fatigued by cyclic bending in an identical way, up to an increasing level of fatigue damage. The measurements of the magnetic properties of these samples were repeated under varied conditions, including speed of magnetization of the samples, sample temperature during the measurement, choice of the evaluated signal, frequency of the voltage sampling, and range of the applied amplitudes of the magnetizing field/current. Special attention was turned to the influence of the thickness of the non-ferromagnetic spacers positioned between the surface of the samples and the flat fronts of the attached magnetizing yokes. On one hand, the spacers decrease the values of the induced signal and its derivatives, but on the other hand they substantially increase the reproducibility of the measurement and positively influence the shapes of the resulting degradation curves. Optimum conditions for the magnetic measurement of the fatigue damage were searched, found, and recommended. The results indicate the reliable applicability of MAT to detect early stages of the material fatigue, and to predict its residual lifetime.

AB - Fatigue damage was investigated by the method of magnetic adaptive testing (MAT), which is based on the systematic measurement and evaluation of minor magnetic hysteresis loops. A large number of magnetic measurements were performed on a single reference series of low carbon steel flat samples, which were fatigued by cyclic bending in an identical way, up to an increasing level of fatigue damage. The measurements of the magnetic properties of these samples were repeated under varied conditions, including speed of magnetization of the samples, sample temperature during the measurement, choice of the evaluated signal, frequency of the voltage sampling, and range of the applied amplitudes of the magnetizing field/current. Special attention was turned to the influence of the thickness of the non-ferromagnetic spacers positioned between the surface of the samples and the flat fronts of the attached magnetizing yokes. On one hand, the spacers decrease the values of the induced signal and its derivatives, but on the other hand they substantially increase the reproducibility of the measurement and positively influence the shapes of the resulting degradation curves. Optimum conditions for the magnetic measurement of the fatigue damage were searched, found, and recommended. The results indicate the reliable applicability of MAT to detect early stages of the material fatigue, and to predict its residual lifetime.

KW - fatigue

KW - ferromagnetic construction materials

KW - magnetic non-destructive evaluation

KW - residual lifetime

UR - http://www.scopus.com/inward/record.url?scp=84940403568&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940403568&partnerID=8YFLogxK

U2 - 10.1088/0957-0233/26/9/095603

DO - 10.1088/0957-0233/26/9/095603

M3 - Article

AN - SCOPUS:84940403568

VL - 26

JO - Measurement Science and Technology

JF - Measurement Science and Technology

SN - 0957-0233

IS - 9

M1 - 095603

ER -