Beam divergence calculation of an electromagnetic acoustic transducer for the non-destructive evaluation of plate-like structures

Siddharth Advani, Jason Van Velsor, Joseph L. Rose

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

5 Scopus citations

Abstract

Ultrasonic guided waves are now proving to be a viable method for real-world long-range Non-Destructive Evaluation (NDE) applications. In order to generate a specific guided wave mode optimally, knowledge of the sensor parameters becomes imperative. This paper attempts to experimentally measure the beam divergence in an Electro-Magnetic Acoustic Transducer (EMAT) that is used to generate Shear Horizontal (SH) guided waves in a mild steel plate. The commercial finite element package ABAQUS™ is then used to run 3D simulations to validate these experimental results. Based on these results, a planar defect study is also carried out. From all these investigations, the minimum degree of rotation of the EMAT can be set when used in a real-time ultrasonic guided wave omni-directional inspection system.

Original languageEnglish (US)
Title of host publicationSAS 2011 - IEEE Sensors Applications Symposium, Proceedings
Pages277-282
Number of pages6
DOIs
StatePublished - Dec 1 2011
Event6th IEEE Sensors Applications Symposium, SAS 2011 - San Antonio, TX, United States
Duration: Feb 22 2011Feb 24 2011

Publication series

NameSAS 2011 - IEEE Sensors Applications Symposium, Proceedings

Other

Other6th IEEE Sensors Applications Symposium, SAS 2011
CountryUnited States
CitySan Antonio, TX
Period2/22/112/24/11

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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