| Titre : |
Structural bonding in automotive body shop |
| Type de document : |
texte imprimé |
| Auteurs : |
Andreas Lutz, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 14-20 |
| Langues : |
Multilingue (mul) |
| Catégories : |
Adhésifs -- Propriétés mécaniques
Adhésifs dans les automobiles
Adhésifs structuraux
Adhésion
Automobiles -- Carrosseries
Collage structural
Essais de pelage
Joints d'étanchéité
Résistance au cisaillement
Résistance au décollement
Rhéologie
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
The use of multi material mix in the body structure in modern design for passenger cars generates issues with regard to significant temperature differences in joints caused by the different CLTEs of the different substrates when the car body passes the e-coat oven. These temperature gradients result in high tension and part deformation. New structural adhesive technologies must tolerate these thermally induced joint stresses. |
| Note de contenu : |
- Historical development
- Mechanical properties
- Application of structural body shop adhesives
- Structural adhesives for body repair
- TABLES : 1. Typical properties of structural body shop adhesives - 2. Overview of mechanical properties of a structural body repair adhesive - 3. Mechanical properties of an adhesive which was optimized for Galvaneal adhesion compared to a reference adhesive - T-peel strength of adhesion improved adhesives versus non optimized adhesives - 5. Las shear and T-peel strength after VDA corrosion exposure - 6. Rheological data of structural adhesives and their applicability : data are generated at 45°C and following DIN 54458 - 7. Mechanical properties of different structural repair adhesives
- FIGURES : 1. Application of a structural adhesive on a car body - 2. Generational development of structural body shop adhesives - 3. Rheological comparison of higher viscous versus a lower viscous adhesive - 4. Aluminum-steel adhesive joint of a vehicle front end - 5. Dynamic impact peel strength in dependence of the test temperature - 6. Quasi statics strength development after humidity storage - 7. Rheological comparison of a wash-off resistant structural adhesive compared to a not improved adhesive following DIN EN 12092 - 8. Lap shear strength after different environmental corrosion cycles (VDA and P1210) - 9. Adhesive bulk stability in dependance of time and temperature - 10. Strength-elongation diagram of mild steel specimen which are bonded using a toughened adhesive compared to specimen which are bonded using a basic adhesive - 11. Strength-elongation diagram of high strength steel specimen which are bonded using a toughened adhesive compared to specimen which are bonded using a basic adhesive - 12. Failure mode after T-peel testing of different adhesive formulations (very good, well and bad adhesion) - 13. Fatigue comparison of an improved structural adhesive versus a reference adhesive : the improved toughened adhesive shows a higher middle load at same amount of cycle loading - 14. Dynamic impact peel strength of different body repair adhesives following ISO 11343 - 15. Elastic moduli of different body shop adhesives |
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in ADHESION - ADHESIVES + SEALANTS > Vol. 14, N° 1/2017 (2017) . - p. 14-20
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Structural bonding in automotive body shop in ADHESION - ADHESIVES + SEALANTS, Vol. 14, N° 1/2017 (2017)
