Abstract
Ply-block size and stress level effect on accumulation of transverse cracks and delamination are investigated during early fatigue life of CFRP laminates. Tension-tension fatigue tests under different stress levels were performed for two cross-ply configurations. Edge observation with digital cameras, digital image correlation and acoustic emission were employed for in-situ damage monitoring. Transverse cracks were dominant for [0/902]s laminates with almost non-existent delamination, while different interactive levels between both damage mechanisms occurred for [02/904]s laminates. Poisson's ratio identifies whether early fatigue damage is dominant by transverse cracks or involves delamination. Cumulative AE energy is a helpful indicator of crack density.
Original language | English |
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Article number | 106811 |
Number of pages | 14 |
Journal | International Journal of Fatigue |
Volume | 159 |
DOIs | |
Publication status | Published - 2022 |
Keywords
- Acoustic emission
- Delamination
- Poisson's ratio
- Stiffness degradation
- Transverse cracking
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Data underlying the article: Early fatigue damage accumulation of CFRP Cross-Ply laminates considering size and stress level effects
Li, X. (Creator), Benedictus, R. (Creator) & Zarouchas, D. (Creator), TU Delft - 4TU.ResearchData, 29 Sept 2022
DOI: 10.4121/21222371, https://doi.org/10.1016/j.ijfatigue.2022.106811
Dataset/Software: Dataset