Evaluation of hardened and non- ardened regions using eddy current testing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A steel plate having hardened and non-hardened regions in one plate is promising material in automobile field owing to its high performance. This steel plate has to be evaluated whether the non-hardened region was prepared properly at the desired position with desired hardness. However, the conventional evaluation method of hardness measurement is destructive testing and requires a long inspection time. Therefore, a reliable and fast nondestructive inspection method is required. In this study, the hardened and non-hardened regions were evaluated using an eddy current testing (ECT) to distinguish each region. The measured resistivity and permeability at each region were different and these differences were found to be caused by the crystal structure change of heat treatment. Therefore, the magnetic response between the hardened and nonhardened regions was different and this difference was correlated with the hardness of each region. These results indicate that the hardened and non-hardened regions can be distinguished using ECT.

Original languageEnglish
Title of host publicationElectromagnetic Non-Destructive Evaluation (XXI)
PublisherIOS Press
Pages1-8
Number of pages8
ISBN (Electronic)9781614998358
DOIs
Publication statusPublished - Jan 1 2018
Event22nd International Workshop on Electromagnetic Nondestructive Evaluation, ENDE 2017 - Saclay, France
Duration: Sep 6 2017Sep 8 2017

Publication series

NameStudies in Applied Electromagnetics and Mechanics
Volume43
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322

Other

Other22nd International Workshop on Electromagnetic Nondestructive Evaluation, ENDE 2017
CountryFrance
CitySaclay
Period9/6/179/8/17

Keywords

  • Eddy current testing
  • Hardness
  • Magnetic sensor
  • Permeability
  • Phase

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Sakai, K., Ito, T., Kiwa, T., & Tsukada, K. (2018). Evaluation of hardened and non- ardened regions using eddy current testing. In Electromagnetic Non-Destructive Evaluation (XXI) (pp. 1-8). (Studies in Applied Electromagnetics and Mechanics; Vol. 43). IOS Press. https://doi.org/10.3233/978-1-61499-836-5-1