Study on EMAT configuration for generating SH waves

Tatsuya Hiramoto, Kodai Okazaki, Toshihiko Sugiura

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

Abstract

Shear-Horizontal guided wave is ideal for nondestructive testing due to its simple dispersion characteristics. To generate SH waves, Electro-Magnetic Acoustic Transducer (EMAT) is more suitable than traditional piezoelectric transducers. Instead of known EMAT configurations such as PPM (Periodic Permanent Magnet), we propose an another configuration, which arrays several coils whose windings reverse alternately; Four sets of coils are placed next to each other, and two magnets are set to apply a magnetic field. We calculated dispersion curves to know the group velocities and to decide the optimal input frequency. Further, we did experiments to excite the zeroth-order symmetric mode, the lowest mode of SH wave, on an aluminum plate.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages444-449
Number of pages6
Volume1581 33
ISBN (Print)9780735412118
DOIs
Publication statusPublished - 2014
Event40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013 - Baltimore, MD, United States
Duration: 2013 Jul 212013 Jul 26

Other

Other40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013
CountryUnited States
CityBaltimore, MD
Period13/7/2113/7/26

Fingerprint

SH waves
transducers
coils
acoustics
piezoelectric transducers
configurations
permanent magnets
group velocity
magnets
shear
aluminum
curves
magnetic fields

Keywords

  • Dispersion Curves
  • EMAT
  • Shear-Horizontal Wave
  • Ultrasonics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hiramoto, T., Okazaki, K., & Sugiura, T. (2014). Study on EMAT configuration for generating SH waves. In AIP Conference Proceedings (Vol. 1581 33, pp. 444-449). American Institute of Physics Inc.. https://doi.org/10.1063/1.4864853

Study on EMAT configuration for generating SH waves. / Hiramoto, Tatsuya; Okazaki, Kodai; Sugiura, Toshihiko.

AIP Conference Proceedings. Vol. 1581 33 American Institute of Physics Inc., 2014. p. 444-449.

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

Hiramoto, T, Okazaki, K & Sugiura, T 2014, Study on EMAT configuration for generating SH waves. in AIP Conference Proceedings. vol. 1581 33, American Institute of Physics Inc., pp. 444-449, 40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013, Baltimore, MD, United States, 13/7/21. https://doi.org/10.1063/1.4864853
Hiramoto T, Okazaki K, Sugiura T. Study on EMAT configuration for generating SH waves. In AIP Conference Proceedings. Vol. 1581 33. American Institute of Physics Inc. 2014. p. 444-449 https://doi.org/10.1063/1.4864853
Hiramoto, Tatsuya ; Okazaki, Kodai ; Sugiura, Toshihiko. / Study on EMAT configuration for generating SH waves. AIP Conference Proceedings. Vol. 1581 33 American Institute of Physics Inc., 2014. pp. 444-449
@inproceedings{12b9435161934c2cb0dbfe0785b3d7fe,
title = "Study on EMAT configuration for generating SH waves",
abstract = "Shear-Horizontal guided wave is ideal for nondestructive testing due to its simple dispersion characteristics. To generate SH waves, Electro-Magnetic Acoustic Transducer (EMAT) is more suitable than traditional piezoelectric transducers. Instead of known EMAT configurations such as PPM (Periodic Permanent Magnet), we propose an another configuration, which arrays several coils whose windings reverse alternately; Four sets of coils are placed next to each other, and two magnets are set to apply a magnetic field. We calculated dispersion curves to know the group velocities and to decide the optimal input frequency. Further, we did experiments to excite the zeroth-order symmetric mode, the lowest mode of SH wave, on an aluminum plate.",
keywords = "Dispersion Curves, EMAT, Shear-Horizontal Wave, Ultrasonics",
author = "Tatsuya Hiramoto and Kodai Okazaki and Toshihiko Sugiura",
year = "2014",
doi = "10.1063/1.4864853",
language = "English",
isbn = "9780735412118",
volume = "1581 33",
pages = "444--449",
booktitle = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",

}

TY - GEN

T1 - Study on EMAT configuration for generating SH waves

AU - Hiramoto, Tatsuya

AU - Okazaki, Kodai

AU - Sugiura, Toshihiko

PY - 2014

Y1 - 2014

N2 - Shear-Horizontal guided wave is ideal for nondestructive testing due to its simple dispersion characteristics. To generate SH waves, Electro-Magnetic Acoustic Transducer (EMAT) is more suitable than traditional piezoelectric transducers. Instead of known EMAT configurations such as PPM (Periodic Permanent Magnet), we propose an another configuration, which arrays several coils whose windings reverse alternately; Four sets of coils are placed next to each other, and two magnets are set to apply a magnetic field. We calculated dispersion curves to know the group velocities and to decide the optimal input frequency. Further, we did experiments to excite the zeroth-order symmetric mode, the lowest mode of SH wave, on an aluminum plate.

AB - Shear-Horizontal guided wave is ideal for nondestructive testing due to its simple dispersion characteristics. To generate SH waves, Electro-Magnetic Acoustic Transducer (EMAT) is more suitable than traditional piezoelectric transducers. Instead of known EMAT configurations such as PPM (Periodic Permanent Magnet), we propose an another configuration, which arrays several coils whose windings reverse alternately; Four sets of coils are placed next to each other, and two magnets are set to apply a magnetic field. We calculated dispersion curves to know the group velocities and to decide the optimal input frequency. Further, we did experiments to excite the zeroth-order symmetric mode, the lowest mode of SH wave, on an aluminum plate.

KW - Dispersion Curves

KW - EMAT

KW - Shear-Horizontal Wave

KW - Ultrasonics

UR - http://www.scopus.com/inward/record.url?scp=84903197812&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903197812&partnerID=8YFLogxK

U2 - 10.1063/1.4864853

DO - 10.1063/1.4864853

M3 - Conference contribution

AN - SCOPUS:84903197812

SN - 9780735412118

VL - 1581 33

SP - 444

EP - 449

BT - AIP Conference Proceedings

PB - American Institute of Physics Inc.

ER -