Next Article in Journal
Metal–Organic Frameworks as Active Materials in Electronic Sensor Devices
Previous Article in Journal
Remote Sensing for Crop Water Management: From ET Modelling to Services for the End Users
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(5), 1106; doi:10.3390/s17051106

An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude

Institute of Smart Engineering, School of Automation, Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Academic Editor: Xiaoning Jiang
Received: 12 March 2017 / Revised: 20 April 2017 / Accepted: 22 April 2017 / Published: 12 May 2017
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [4042 KB, uploaded 12 May 2017]   |  

Abstract

The low energy transition efficiency of electromagnetic ultrasonic transducer (EMAT) is a common problem in practical application. For the purpose of enhancing the amplitude of the received signal, an improved double-coil bulk wave EMAT is proposed for the thickness measurement of metallic block. This new configuration of magnets consists of a solid cylindrical magnet and a ring-shaped magnet encircling the outer side of the solid cylindrical one. A double-coil was applied instead of a single spiral-coil. Numerical simulations were performed to analyze and optimize the proposed configuration of the EMAT by the 2-D axisymmetric finite element model (FEM). The experiment effectively verifies the rationality of the new configuration and the feasibility of improving the signal strength. View Full-Text
Keywords: electromagnetic ultrasonic transducer; double-coil; finite element model; signal-to-noise ratio; bulk wave electromagnetic ultrasonic transducer; double-coil; finite element model; signal-to-noise ratio; bulk wave
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Jia, X.; Ouyang, Q.; Zhang, X. An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude. Sensors 2017, 17, 1106.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top