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Correlation between material properties and damage tolerance behaviour of composite structures

Korrelation zwischen Werkstoffeigenschaften und Schadenstoleranz-Verhalten von Faserverbundkonstruktionen
 

Engineering Materials Advisory Services Ltd. -EMAS-, Cradley Heath:
Durability and structural integrity of airframes. Proceedings of the 17th ICAF-Symposium 1993. Vol.1
Warley, 1993
pp.733-758 : Abb.,Tab.,Lit.
International Committee on Aeronautical Fatigue (Symposium) <17, 1993, Stockholm>
English
Conference Paper
Fraunhofer LBF ()
composite structure; compression test; crack propagation data; damage; delamination; Druckversuch; fatigue strength; finite element analysis; Finite-Elemente-Methode (FEM); Formänderungsarbeit; impact test; material property; Rißfortschrittsdaten; Schädigung; Schlagversuch; Schwingfestigkeit; strain energy; Verbundkonstruktion; Werkstoffeigenschaft

Abstract
The improved performance of toughened composites was demonstrated by Interlaminar Fracture Energy (IFE)- and Compression After Impact (CAI)-tests with generic specimens (coupons), and the transfer of these improvements to the composite structure by CAI-, Fatigue After Impact (FAI)- and Delamation Growth (DG)-tests with specimens related to a horizontal tail structure. The work includes the development of a special testing technique which was required for the derivation of DG-curves (dA/dN=G total), and finite element calculations of strain energy release rate distributions along the delamination front.

: http://publica.fraunhofer.de/documents/PX-8720.html