The assessment of skin/core bond in honeycomb samples was carried out by a bistatic ultrasonic non-contact system. Lamb waves were generated by a Nd:YAG pulsed laser and detected by an air-coupled capacitance transducer located in pitch-catch configuration. Periodically spaced line sources, generated on the sample surface using a four element lenticular array, allowed generation of narrow-band directional Lamb waves. Changes in amplitude of the transmitted signal permitted detection of skin/core disbonds.
Cosenza, C., Cerniglia, D., Djordjevic, B. (2002). Non-contact ultrasonic inspection of skin/core bond in honeycomb with lamb waves. In Proceedings of the IEEE Ultrasonics Symposium (pp.749-752).
Non-contact ultrasonic inspection of skin/core bond in honeycomb with lamb waves
CERNIGLIA, Donatella;
2002-01-01
Abstract
The assessment of skin/core bond in honeycomb samples was carried out by a bistatic ultrasonic non-contact system. Lamb waves were generated by a Nd:YAG pulsed laser and detected by an air-coupled capacitance transducer located in pitch-catch configuration. Periodically spaced line sources, generated on the sample surface using a four element lenticular array, allowed generation of narrow-band directional Lamb waves. Changes in amplitude of the transmitted signal permitted detection of skin/core disbonds.
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