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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Maes, Vincent Karel
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Sensitivity of cross-sectional compliance to manufacturing tolerances for wind turbine bladescitations
- 2024Effects of accelerated curing in thermoplastic particle interleaf epoxy laminatescitations
- 2023A Feasibility Study for Additively Manufactured Composite Tooling
- 2022Large Scale Forming of Non-Crimp Fabrics for Aerostructurescitations
- 2022Tracking consolidation of out-of-autoclave prepreg corners using pressure sensorscitations
- 2018Optimisation of composite structures – Enforcing the feasibility of lamination parameter constraints with computationally-efficient mapscitations
- 2017A new optimisation framework for investigating wind turbine blade designscitations
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article
Tracking consolidation of out-of-autoclave prepreg corners using pressure sensors
Abstract
A total of eight corner pieces with the four different thickness-to-radius ratio, one set using external and one set using internal tooling, were made to identify how unidirectional carbon-epoxy prepreg layers consolidate during lay-up and oven vacuum bag moulding. Flexible thin-film pressure sensors were introduced to both internal and external corner mould surfaces and pressure measurements were taken during hand lay-up. A second sensor was added to monitor how the pressure gradient changes during oven vacuum bag moulding. Time-lapsed pressure measurements found that the geometry-induced excess pressure on the external corners decreases during moulding, leading to some corner thinning but this effect is small. Meanwhile, internal corner parts saw significant ply-bridging in high thickness-to-radius conditions that could not be resolved during consolidation, resulting in corner thickening and voids. The flexible sensors are a viable option for in-situ pressure monitoring for potential meso-structural defects during composite product development or manufacture.