| Autor: |
Charles Pergantis, Joseph N. Zalameda, David Flanagan, William P. Winfree, Daniel DeSchepper |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
Thermosense XXXI. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.819493 |
| Popis: |
The application of a noncontact air coupled acoustic heating technique is investigated for the inspection of advanced honeycomb composite structures. A weakness in the out of plane stiffness of the structure, caused by a delamination or core damage, allows for the coupling of acoustic energy and thus this area will have a higher temperature than the surrounding area. Air coupled acoustic thermography (ACAT) measurements were made on composite sandwich structures with damage and were compared to conventional flash thermography. A vibrating plate model is presented to predict the optimal acoustic source frequency. Improvements to the measurement technique are also discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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