Gd
G. de Jong
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Multiscale Modeling of the effect of sub-ply voids on the failure of composites
A progressive failure model
The effective fracture behavior of a fiber-reinforced composite depends on both the design and manufacturing of the material. During manufacturing several type of defects can occur. One of these defects are micro-voids on the sub-ply level. These can consist of either matrix voids or gaps between the fibers due to the inability of the resin to flow between the fibers. A recently developed multiscale-theory is expended to account for these defects on the microscale. It was found that the type of defect on a sub-ply level had little effect on the macroscopic properties and the main parameter is the void content of these sub-ply voids. For a mode II opening it is found that there is a critical value after which the void content start to have an influence.
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The effective fracture behavior of a fiber-reinforced composite depends on both the design and manufacturing of the material. During manufacturing several type of defects can occur. One of these defects are micro-voids on the sub-ply level. These can consist of either matrix voids or gaps between the fibers due to the inability of the resin to flow between the fibers. A recently developed multiscale-theory is expended to account for these defects on the microscale. It was found that the type of defect on a sub-ply level had little effect on the macroscopic properties and the main parameter is the void content of these sub-ply voids. For a mode II opening it is found that there is a critical value after which the void content start to have an influence.
Bachelor thesis
(2015)
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S. Angelovski, Y. A. Antonio, G. de Jong, A. Carrera, Y. Chen, J.H. Freiherr von der Goltz, G.R.W. ten Hove, T. Bussink, K. Rado, J.K. El Sioufy, E.J.O. Schrama