Influence of the 90/0 ply thickness ratio on the stresses associated with the edge effect phenomenon
The scale effect phenomenon has shed light on the thermo-mechanical behaviour of ultra-thin plies. These laminas in cross-ply laminates (under certain 90/0 thickness ratios) have given rise to a relevant edge effect phenomenon, causing significant through-the-thickness stress in the weakest ply alon...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/174172 |
| Acceso en línea: | https://hdl.handle.net/11441/174172 https://doi.org/10.1016/j.compositesa.2025.108961 |
| Access Level: | acceso abierto |
| Palabra clave: | Scale effect Free edge Carbon and glass fibres Cross-ply laminate |
| Sumario: | The scale effect phenomenon has shed light on the thermo-mechanical behaviour of ultra-thin plies. These laminas in cross-ply laminates (under certain 90/0 thickness ratios) have given rise to a relevant edge effect phenomenon, causing significant through-the-thickness stress in the weakest ply along its free edge under both thermal and (0-longitudinal tension) mechanical loading. Thus, a biaxial stress state must be considered to analyse what happens along the free edges from experimental samples to structural components, such as drill holes. A parametric numerical analysis is performed taking three different features into account: the thickness of the ply blocks, the cross-ply stacking sequences and the type of fibre, either carbon or glass. The numerical predictions are in accordance with experimental results, which are obtained under a thermal cooldown. The biaxial stress state predictions could be used in future numerical procedures including the presence of components’ free edges. |
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