Micro-macro understanding of delamination crack initiating and growth at ply drops in thick laminates

Thumbnail Image

Files

master_Tran_Vinh_2024.pdf (165.89 MB)

URL

Journal Title

Journal ISSN

Volume Title

School of Engineering | Master's thesis
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.

Authors

Date

2024-10-15

Department

Major/Subject

Mechanical Engineering

Mcode

Degree programme

Master's programme in Mechanical Engineering

Language

en

Pages

246

Series

Abstract

In the present study, scanning electron microscopy (SEM) is used to identify the relevant fractographic features on the fracture surface of specimens having experienced static and fatigue crack growth. The fracture features associated with the different opening modes, the typical fracture behaviours in static and fatigue crack growth, and the fracture behaviours close to the crack tip and remote from the crack tip are the key considerations in this study. The results and experimental methods of the study are valuable in providing insights into the dominant fracture mode, delamination damage initiation and propagation site in glass fiber-reinforced epoxy composites. The approach used in the thesis can serve as guidelines as to how to approach and undertake a failure analysis.

Description

Supervisor

Bossuyt, Sven

Thesis advisor

Sørensen, Bent F.

Keywords

composite fractography, scanning electron microscopy, fiber-reinforced epoxy composites, linear elastic fracture mechanics, mechanical testing specimens, cyclic crack growth rate

Other note

Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202412167802

Collections

[dipl] Insinööritieteiden korkeakoulu / ENG