Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading

Key Engineering Materials 2017
Jānis Vārna, L Zhuang, Andrejs Pupurs, Z Ayadi

Fiber/matrix debonding in transverse tensile loading of a unidirectional composite is analyzed calculating energy release rate (ERR) for interface crack propagation. Non-uniform fiber distribution (local hexagonal fiber clustering) is assumed in the model. The matrix region containing the central fiber with the debond and the 6 surrounding fibers is embedded in a large block of homogenized composite which has the same fiber content as the region analyzed explicitly. Some of the fibers surrounding the central fiber may also have a debond. The effect of the local clustering and of the presence of other debonds on magnification of the ERR is analyzed.

Keywords
Energy release rate, Fiber/matrix debonding, Transverse failure, Unidirectional composite
DOI
10.4028/www.scientific.net/KEM.754.63
Hyperlink
https://www.scientific.net/KEM.754.63

Vārna, J., Zhuang, L., Pupurs, A., Ayadi, Z. Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading. Key Engineering Materials, 2017, Vol. 754, No. 1, pp.63-66. ISSN 1013-9826. Available from: doi:10.4028/www.scientific.net/KEM.754.63

Publication language
English (en)