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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yanez, Y. Garcia-Rodriguez, M. Garcia-Hernandez, M.J. Salazar, J. Turo, A. Chavez, J.A. |
| Copyright Year | 2007 |
| Description | Author affiliation: Tech. Univ. of Catalonia, Barcelona (Yanez, Y.; Garcia-Rodriguez, M.; Garcia-Hernandez, M.J.; Salazar, J.; Turo, A.; Chavez, J.A.) |
| Abstract | This paper describes a new Lamb wave excitation technique using square chirp signals for air-coupled inspection of laminate materials in a non destructive testing system. The airborne ultrasonic waves are generated with an air-coupled ultrasonic plane array transducer with 15 active elements. Each array element is excited with a square chirp signal in order to apply pulse compression techniques. The advantages of using chirp signals are a greater SNR when using pulse compression (compared with burst or single pulse), a more precise time of flight calculation and a greater use of the transducer bandwidth. However, a decrease in the signal amplitude is expected due to the dispersion of the Lamb waves. |
| Starting Page | 1844 |
| Ending Page | 1847 |
| File Size | 218556 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424413836 |
| ISSN | 10510117 |
| DOI | 10.1109/ULTSYM.2007.464 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-10-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Chirp modulation Pulse compression methods Ultrasonic transducer arrays Inspection Laminates Materials testing System testing Piezoelectric transducers Ultrasonic transducers Bandwidth |
| Content Type | Text |
| Resource Type | Article |
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