Unfolding the early fatigue damage process for CFRP cross-ply laminates

Li, X.; Kupski, J.A.; Teixeira De Freitas, S.; Benedictus, R.; Zarouchas, D.

doi:10.1016/j.ijfatigue.2020.105820

Unfolding the early fatigue damage process for CFRP cross-ply laminates

Title

Unfolding the early fatigue damage process for CFRP cross-ply laminates

Author

Li, X. (TU Delft Structural Integrity & Composites)
Kupski, J.A. (TU Delft Structural Integrity & Composites)
Teixeira De Freitas, S. (TU Delft Structural Integrity & Composites)
Benedictus, R. (TU Delft Structural Integrity & Composites)
Zarouchas, D. (TU Delft Structural Integrity & Composites)

Date

2020-11

Abstract

This study investigates the early fatigue damage of cross-ply carbon/epoxy laminates. The aim is to unfold the damage accumulation process, understand the interaction between different damage mechanisms, and quantify their contribution to stiffness degradation. Tension-tension fatigue tests were performed, while edge observation and DIC technique monitored the damage evolution. It was found that different accumulation process and interactive levels between transverse matrix cracks and delamination exist for specimens with similar stiffness degradation. A linear increase of stiffness degradation was observed with the increase of matrix crack density, while the growing trend of stiffness degradation converged with the increase of delamination.

Subject

Damage interaction
Digital Image Correlation
Early fatigue damage process
In-situ monitoring

To reference this document use:

http://resolver.tudelft.nl/uuid:92d4a954-0e60-4a51-8b5f-f3a42627cfcf

DOI

https://doi.org/10.1016/j.ijfatigue.2020.105820

ISSN

0142-1123

Source

International Journal of Fatigue, 140

Part of collection

Institutional Repository