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Synergism between layer cracking and delaminations in multidirectional laminates of carbon-fibre-reinforced epoxy.

Eggers, H. and Goetting, H.C. and Baeuml, H. (1994) Synergism between layer cracking and delaminations in multidirectional laminates of carbon-fibre-reinforced epoxy. Composites Science and Technology, 50, pp. 343-354.

Full text not available from this repository.

Abstract

Photographs of different crack modes are shown giving insight into the damage behaviour of composites fabricated of T300/914C plies of 0.125 mm thickness. An increase in the damage tolerance was observed for laminates stacked by quasi-unidirectional(+-2)angle plies. For cross-ply laminates under tension fatigue loading, test results, supplied for the spacings of layer cracks, are used to generate formulae for the residual layer stiffnesses. As an extension to the common energy relaese rate (ERR) concept an ERR tensor is established. The first invariant of this tensor and its mean values describe the energy release rate and its partitioning into different crack modes, respectively. From the complete set of invariants a first estimation of crack condition for the delamination growth is proposed which includes the effect of fibre orientation.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1994,
Title:Synergism between layer cracking and delaminations in multidirectional laminates of carbon-fibre-reinforced epoxy.
Authors:
AuthorsInstitution or Email of Authors
Eggers, H.UNSPECIFIED
Goetting, H.C.UNSPECIFIED
Baeuml, H.UNSPECIFIED
Date:1994
Journal or Publication Title:Composites Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:50
Page Range:pp. 343-354
Status:Published
Keywords:Layer cracking, delamination, carbon-fibre-reinforced laminated, damage condition, energy release rate, synergism.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Institut für Strukturmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 11:57

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