Non-Contact Ultrasound Systems for Detection of Fatigue and Corrosion Damage inAircraft

摘要

This research has been directed at development and application of non-contactlaser, electromagnetic acoustic transducers (EMATs), and air-coupled technology to enhance means for ultrasonic detection of fatigue and corrosion damage in military aircraft structures. The methods which have been investigated include: (1) laser generation/EMAT detection (2) laser generation and detection (3) laser generation/air-coupled detection (4) air-coupled generation and detection.