| Titre : |
Non-destructive evaluation of the mechanical strength of a TA6V4/composite bond using LASAT |
| Type de document : |
texte imprimé |
| Auteurs : |
Simon Bardy, Auteur ; Mathieu Ducousso, Auteur ; Laurent Berthe, Auteur ; Frédéric Jenson, Auteur ; Nicolas Cuvillier, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 58-62 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésifs dans les avions
Assemblages collés -- Propriétés mécaniques
Avions -- Conception et construction
Avions -- Matériaux
Contrôle non destructif
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
In the current context of aircraft weight reduction and considering the trend for lowering production and maintenance costs, the aeronautics industry is promoting the use of adhesive bonds to replace mechanical fasteners. However, the main limitation of structural bonding in the aircraft industry is the ability to certify the good quality of a structural bond in a non-invasive way, i.e. to certify that the bond can resist up to a predefined strength value. |
| Note de contenu : |
- LASAT PRINCIPLE
- EXPERIMENTS : Materials - Laser facility - Procedure
- RESULTS : Disbonding thresholds - Time-position diagrams - Free surface velocity measurement - Non-destructive testing
- FIGURES : 1. Schematic view of the generation of a laser-induced shockwave in a confined geometry - 2. Laser adhesion test configuration - 3. Front face of a TA6V/composite sample after laser ablation - 4. Summary of laser shots for each configuration with US disbonding diagnostic (green circles - no disbonding detected, red circles - disbonding detected) and disbonding thresholds as black lines (threshold uncertainly is shown with dotted lines) - 5. a) Time-position (X-t) stress diagram ; and b) stress evolution at the epoxy/composite interface in the composite illumination case - 6. a) Time-position (X-t) stress diagram ; and b) stress evolution at the epoxy/composite interface in the TA6V illumination case - 7. Evolution of the free surface velocity with time for composite illumination shots on a weak bond - Temporal resolution = 50 ns - Signals in dotted lines correspond to identified disbonding configurations |
| En ligne : |
https://drive.google.com/file/d/1HySmF9LIpO3k__ZAT3QvZRNjsHDEYJ6f/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29361 |
in JEC COMPOSITES MAGAZINE > N° 116 (10/2017) . - p. 58-62
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