Magnetic image detection of the stainless-steel welding part inside a multi-layered tube structure

Takayuki Hayashi, Yoshihiko Kawasaki, Hironobu Yamada, Toshihiko Kiwa, Masaji Tamazumi, Keiji Tsukada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The stainless-steel welding part inside a multi-layered tube was successfully detected using low-frequency magnetic imaging. The magnetic images were obtained by the developed measurement system, consisting of an exposure coil, magnetoresistive (MR) sensor, lock-in amplifier, x-y stage, revolving stage with a horizontal level stage and personal computer. To expose the magnetic field to a wide area of the stainless-steel sample, the radius of the exposure coil was made comparable to the sample size. The MR sensor measured the vector components of the magnetic field generated from the sample within the range of low frequencies between 50 Hz and 1 kHz. A cylindrical stainless-steel sample was fabricated as a tube by rolling a stainless-steel sheet and welding each edge using arc welding with argon as shielding gas. The normal components (Bz) and tangential components (Bx and By) to the sample surface were measured by scanning the MR sensor on the sample surface and the magnetic characteristics of each of the component images were documented. As a result, the difference in permeability between the weld area and the base material was successfully visualized as magnetic images.

Original languageEnglish
Pages (from-to)308-315
Number of pages8
JournalNDT and E International
Volume42
Issue number4
DOIs
Publication statusPublished - Jun 2009

Fingerprint

Stainless Steel
welding
stainless steels
Welding
Stainless steel
tubes
Sensors
Magnetic fields
level (horizontal)
Argon
sensors
Electric arc welding
coils
Steel sheet
Personal computers
Shielding
low frequencies
arc welding
Welds
Gases

Keywords

  • Low-frequency magnetic field
  • Magnetoresistive sensor
  • Non-destructive evaluation
  • Stainless-steel weld

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Magnetic image detection of the stainless-steel welding part inside a multi-layered tube structure. / Hayashi, Takayuki; Kawasaki, Yoshihiko; Yamada, Hironobu; Kiwa, Toshihiko; Tamazumi, Masaji; Tsukada, Keiji.

In: NDT and E International, Vol. 42, No. 4, 06.2009, p. 308-315.

Research output: Contribution to journalArticle

Hayashi, Takayuki ; Kawasaki, Yoshihiko ; Yamada, Hironobu ; Kiwa, Toshihiko ; Tamazumi, Masaji ; Tsukada, Keiji. / Magnetic image detection of the stainless-steel welding part inside a multi-layered tube structure. In: NDT and E International. 2009 ; Vol. 42, No. 4. pp. 308-315.
@article{ae0c38a7733743f7944e553e3e54a5b2,
title = "Magnetic image detection of the stainless-steel welding part inside a multi-layered tube structure",
abstract = "The stainless-steel welding part inside a multi-layered tube was successfully detected using low-frequency magnetic imaging. The magnetic images were obtained by the developed measurement system, consisting of an exposure coil, magnetoresistive (MR) sensor, lock-in amplifier, x-y stage, revolving stage with a horizontal level stage and personal computer. To expose the magnetic field to a wide area of the stainless-steel sample, the radius of the exposure coil was made comparable to the sample size. The MR sensor measured the vector components of the magnetic field generated from the sample within the range of low frequencies between 50 Hz and 1 kHz. A cylindrical stainless-steel sample was fabricated as a tube by rolling a stainless-steel sheet and welding each edge using arc welding with argon as shielding gas. The normal components (Bz) and tangential components (Bx and By) to the sample surface were measured by scanning the MR sensor on the sample surface and the magnetic characteristics of each of the component images were documented. As a result, the difference in permeability between the weld area and the base material was successfully visualized as magnetic images.",
keywords = "Low-frequency magnetic field, Magnetoresistive sensor, Non-destructive evaluation, Stainless-steel weld",
author = "Takayuki Hayashi and Yoshihiko Kawasaki and Hironobu Yamada and Toshihiko Kiwa and Masaji Tamazumi and Keiji Tsukada",
year = "2009",
month = "6",
doi = "10.1016/j.ndteint.2008.12.006",
language = "English",
volume = "42",
pages = "308--315",
journal = "NDT and E International",
issn = "0963-8695",
publisher = "Elsevier Limited",
number = "4",

}

TY - JOUR

T1 - Magnetic image detection of the stainless-steel welding part inside a multi-layered tube structure

AU - Hayashi, Takayuki

AU - Kawasaki, Yoshihiko

AU - Yamada, Hironobu

AU - Kiwa, Toshihiko

AU - Tamazumi, Masaji

AU - Tsukada, Keiji

PY - 2009/6

Y1 - 2009/6

N2 - The stainless-steel welding part inside a multi-layered tube was successfully detected using low-frequency magnetic imaging. The magnetic images were obtained by the developed measurement system, consisting of an exposure coil, magnetoresistive (MR) sensor, lock-in amplifier, x-y stage, revolving stage with a horizontal level stage and personal computer. To expose the magnetic field to a wide area of the stainless-steel sample, the radius of the exposure coil was made comparable to the sample size. The MR sensor measured the vector components of the magnetic field generated from the sample within the range of low frequencies between 50 Hz and 1 kHz. A cylindrical stainless-steel sample was fabricated as a tube by rolling a stainless-steel sheet and welding each edge using arc welding with argon as shielding gas. The normal components (Bz) and tangential components (Bx and By) to the sample surface were measured by scanning the MR sensor on the sample surface and the magnetic characteristics of each of the component images were documented. As a result, the difference in permeability between the weld area and the base material was successfully visualized as magnetic images.

AB - The stainless-steel welding part inside a multi-layered tube was successfully detected using low-frequency magnetic imaging. The magnetic images were obtained by the developed measurement system, consisting of an exposure coil, magnetoresistive (MR) sensor, lock-in amplifier, x-y stage, revolving stage with a horizontal level stage and personal computer. To expose the magnetic field to a wide area of the stainless-steel sample, the radius of the exposure coil was made comparable to the sample size. The MR sensor measured the vector components of the magnetic field generated from the sample within the range of low frequencies between 50 Hz and 1 kHz. A cylindrical stainless-steel sample was fabricated as a tube by rolling a stainless-steel sheet and welding each edge using arc welding with argon as shielding gas. The normal components (Bz) and tangential components (Bx and By) to the sample surface were measured by scanning the MR sensor on the sample surface and the magnetic characteristics of each of the component images were documented. As a result, the difference in permeability between the weld area and the base material was successfully visualized as magnetic images.

KW - Low-frequency magnetic field

KW - Magnetoresistive sensor

KW - Non-destructive evaluation

KW - Stainless-steel weld

UR - http://www.scopus.com/inward/record.url?scp=63749121720&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=63749121720&partnerID=8YFLogxK

U2 - 10.1016/j.ndteint.2008.12.006

DO - 10.1016/j.ndteint.2008.12.006

M3 - Article

VL - 42

SP - 308

EP - 315

JO - NDT and E International

JF - NDT and E International

SN - 0963-8695

IS - 4

ER -