[article]
| Titre : |
Cost-effective, phase-based thermography method for ultrasonic investigation of defects in CFRP structure |
| Type de document : |
texte imprimé |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 46-52 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Avions -- Matériaux
Composites à fibres de carbone
Contrôle non destructif
Détection de défauts (Ingénierie)
Thermographie
|
| Index. décimale : |
620.112 Résistance et autres propriétés des matériaux, essais non destructifs |
| Résumé : |
In recent years nondestructive inspection (NDI) methods have found their way into service in the aerospace and automotive industry. Due to the high cost of reliable and sensitive NDI systems, they are often not affordable for small and medium-sized companies, which represent not only the majority of aerospace and automotive suppliers but also nearly the whole area of high performance sports equipment. For this reason a new approach in thermographic testing is introduced in this work, which combines the advantages of a robust and cheap NDI system such as heat flow thermography with the defect sensitivity of a high performance NDI method such as Lock-In thermography. A separation of the synchronized data acquisition and excitation together with an appropriate data management and analyzing software algorithm and cheap off-the-shelf components lead to a two stepped phase sensitive thermographic system with high accuracy. A CFRP testplate containing various kinds of defects (delaminations, inclusions, fiber cracks, resin accumulations, etc.) is used to compare this thermographic system with the results of a water coupled ultrasonic system. It is shown that this system has comparable defect sensitivity and even shows advantages in the detection of overlapped defects while simultaneously reducing the total testing time. Furthermore large defect areas can be inspected very quiclky. |
| Note de contenu : |
- Thermographic techniques
- Sequential phase modulated thermography
RESULTS : Characterization of typical in CFRP structures |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12719 |
in SAMPE JOURNAL > Vol. 47, N° 6 (11-12/2011) . - p. 46-52
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Cost-effective, phase-based thermography method for ultrasonic investigation of defects in CFRP structure in SAMPE JOURNAL, Vol. 47, N° 6 (11-12/2011)
