Acoustic emission - A critical comparison between theory and experiment
Abstract
Acoustic emission (AE) monitoring has not been optimized as an NDT technique mainly because of the inability to experimentally determine the unmodified waveforms, frequency spectra, and propagation characteristics associated with a source mechanism and to correlate the measured values with theoretical models. This paper shows that optical AE detection systems, combined with test specimens of carefully selected geometry, afford for the first time the possibility of recording the actual waveform and frequency spectra of an AE source unmodified by transducer response characteristics or ringing.
- Publication:
-
Ultrasonics International 1977
- Pub Date:
- 1977
- Bibcode:
- 1977ulin.proc..235G
- Keywords:
-
- Acoustic Emission;
- Nondestructive Tests;
- Ultrasonic Flaw Detection;
- Ultrasonic Wave Transducers;
- Acoustic Propagation;
- Acousto-Optics;
- Sound Waves;
- Wave Propagation;
- Instrumentation and Photography