Application Example of EMAT Generated Horizontally Polarized Shear Waves for Ultrasonic Inspection

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Authors
  1. Gauthier, J.
  2. Chahbaz, A.
  3. Bergeron, R.
Corporate Authors
Tektrend International Inc, Montreal QUE (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Some inspection applications can be greatly improved by the use of shear horizontal waves. In this work, various examples of the uses of ultrasonic horizontally polarized shear (SH) are presented. The ultrasonic waves used in all of the applications examples were generated using Electromgnetic Acoustic Transducers (EMATs) couplantless technology. The inspection were performed using either the traditional bulk inspection or with the non-conventional guided wave inspection methodology. The purpose of the review paper is to demonstrate both the advantages and disadvantage of SH waves inspection perfomred with the EMAT probes. Individual application examples include a brief description of the problem; the inspection methodology using SH waves and finally some results and comments of SH waves inspection. The examples investigated include methdology for defect detection and integrity assessment.
Keywords
EMAT (Electomagnetic Acoustic Transducer)
Report Number
DREA-SR-1999-162-PAP-37 — CONTAINED IN CA000150
Date of publication
01 Oct 1999
Number of Pages
10
DSTKIM No
CA000187
CANDIS No
511911
Format(s):
Hardcopy;Document Image stored on Optical Disk

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