Abstract
The development of a distinct damage mode from the existing damage in composite laminates used in wind turbine blades is not fully understood; thus making it difficult to elucidate the event of chain of different failure mechanisms. In this paper, an experimental analysis was carried out on glass fibre composite laminate with the layup [0/60/0/-60]s subjected to cyclic loading in order to document the damage subsequent to early stage of intralaminar matrix cracks, also referred as tunnelling cracks in off-axis plies 60˚/-60˚. The staining method coupled with X-ray Computed Tomography (CT) scan allowed in visualizing tunnelling crack propagation into the pure matrix region of 0˚ UD ply locally sandwiched between thin (60˚) and thick (-60˚) plies after 30,000 cycles. While close to the edge, due to edge effect phenomenon the tunnelling crack from the backing bundles resulted in considerable fibre breaks in 0˚ UD bundles.
| Original language | English |
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| Title of host publication | Procceedings of Twenty-Second International Conference on composite materials (ICCM22) |
| Number of pages | 6 |
| Publication date | 2020 |
| Publication status | Published - 2020 |
| Event | 22nd International Conference on Composite Materials: Advanced Composites: Research to Impact - Melbourne Convention and Exhibition Centre (MCEC), Melbourne, Australia Duration: 11 Aug 2019 → 16 Aug 2019 Conference number: 22 |
Conference
| Conference | 22nd International Conference on Composite Materials |
|---|---|
| Number | 22 |
| Location | Melbourne Convention and Exhibition Centre (MCEC) |
| Country/Territory | Australia |
| City | Melbourne |
| Period | 11/08/2019 → 16/08/2019 |
Keywords
- Glass fiber composites
- Fatigue
- Tunnelling crack
- X-ray tomography
- Staining