Determining the Damage and Failure Behaviour of Textile Reinforced Composites under Combined In-Plane and Out-of-Plane Loading

The absence of sufficient knowledge of the heterogeneous damage behaviour of textile reinforced composites, especially under combined in-plane and out-of-plane loadings, requires the development of multi-scale experimental and numerical methods. In the scope of this paper, three different types of p...

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Bibliographic Details
Published in:Materials 2020-10, Vol.13 (21), p.4772
Main Authors: Düreth, Christian, Weck, Daniel, Böhm, Robert, Thieme, Mike, Gude, Maik, Henkel, Sebastian, Wolf, Carl, Biermann, Horst
Format: Article
Language:English
Subjects:
Biaxial loads
Biaxial tests
Carbon
Composite materials
Damage
Data acquisition
Emissions
Failure analysis
Failure modes
Fiber volume fraction
Fracture toughness
Geometry
Image acquisition
Image processing
Multiscale analysis
Nesting
Numerical methods
Photomicrographs
Research methodology
Statistical methods
Textile composites
Yarn
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Summary:The absence of sufficient knowledge of the heterogeneous damage behaviour of textile reinforced composites, especially under combined in-plane and out-of-plane loadings, requires the development of multi-scale experimental and numerical methods. In the scope of this paper, three different types of plain weave fabrics with increasing areal weight were considered to characterise the influence of ondulation and nesting effects on the damage behaviour. Therefore an advanced new biaxial testing method has been elaborated to experimentally determine the fracture resistance at the combined biaxial loads. Methods in image processing of the acquired in-situ CT data and micrographs have been utilised to obtain profound knowledge of the textile geometry and the distribution of the fibre volume content of each type. Combining the derived data of the idealised geometry with a numerical multi-scale approach was sufficient to determine the fracture resistances of predefined uniaxial and biaxial load paths. Thereby, Cuntze’s three-dimensional failure mode concept was incorporated to predict damage and failure. The embedded element method was used to obtain a structured mesh of the complex textile geometries. The usage of statistical and visualisation methods contributed to a profound comprehension of the ondulation and nesting effects.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13214772