Multiscale Modeling of the effect of sub-ply voids on the failure of composites

de Jong, G.

Multiscale Modeling of the effect of sub-ply voids on the failure of composites

A progressive failure model

Master thesis (2018)

Authors

G. de Jong Aerospace Engineering

Contributors

S.R. Turteltaub (mentor)

Faculty

Aerospace Engineering, Aerospace Engineering

Composites Defects Fracture mechanics Multiscale method Voids Progressive Damage Analysis Cohesive zone modeling

To reference this document use:

http://resolver.tudelft.nl/uuid:6f28bc35-2eba-467c-b884-74aab86e518e

More Info

expand_more

Published Date

12-02-2018

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Aerospace Engineering

Abstract

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.

Files

Thesis_GdeJong_MultiscaleModel... (pdf)

(pdf | 12.1 Mb)

Unknown license