Abstract
Ultrasonic guided wave skew effects introduced by material anisotropy of wave guides are usually considered undesirable in nondestructive evaluation (NDE). This paper presents a novel method of utilizing guided wave skew effects in defect detection for composite plates. A comb type transducer is designed to produce guided wave modes in composite plates. On the basis of skew angle dispersion curves, different wave modes with different skew angles are selected by means of applying different time delays to the transducer elements to inspect different directions in composite plates. The angular locations of the defects with respect to the wave launching direction can be determined without physically rotating the transducer. The scanning is fully electronic. Experiments on defect detection in a carbon/epoxy fiber-reinforced composite plate are conducted to validate the feasibility of the proposed method.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1049-1056 |
| Number of pages | 8 |
| Journal | AIP Conference Proceedings |
| Volume | 1096 |
| DOIs | |
| State | Published - May 5 2009 |
| Event | Review of Progress in Quantitative Nondestructive Evaluation - Chicago, IL, United States Duration: Jul 20 2008 → Jul 25 2008 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)