| タイトル | Application of Air Coupled Acoustic Thermography (ACAT) for Inspection of Honeycomb Sandwich Structures |
| 本文（外部サイト） | http://hdl.handle.net/2060/20090019139 |
| 著者（英） | Pergantis, Charles; Winfree, William P.; Flanagan, David; Zalameda, Joseph N.; Deschepper, Daniel |
| 著者所属（英） | Army Research Lab.; NASA Langley Research Center |
| 発行日 | 2009-04-13 |
| 言語 | eng |
| 内容記述 | 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. |
| NASA分類 | Acoustics |
| レポートNO | LF99-7784 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
