The development of an EMAT system for the accurate measurement of the phase velocity of shear waves
Abstract
Some EMA transducers which were used to obtain ultrasonic phase delay measurements of shear waves to an accuracy of 0.01% and better in mild steel are described. Some novel EMA transducers are also discussed, in particular some shear horizontal (SH) wave transducers are shown to reduce the problem presented by mode converted pulses.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1982
- Bibcode:
- 1982STIN...8322509A
- Keywords:
-
- Metal Plates;
- Phase Velocity;
- Steels;
- Electromagnetic Radiation;
- Magnetic Coils;
- Sh Waves;
- Signal To Noise Ratios;
- Transducers;
- Communications and Radar