| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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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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Price, Mark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2015Predicting the crushing behaviour of composite material using high-fidelity finite element modellingcitations
- 2014Process efficiency in polymer extrusion: Correlation between the energy demand and melt thermal stabilitycitations
- 2014Energy monitoring and quality control of a single screw extrudercitations
- 2014Investigation of the process energy demand in polymer extrusion: a brief review and an experimental studycitations
- 2014Influence of Boundary Conditions on the Low Velocity Impact Damage Carbon Fibre Reinforced Plastic Plates (ICTWS2014-0501)
- 2014Low-cost Process monitoring for polymer extrusion
- 2013Integrating allowable design strains in composites with whole life valuecitations
- 2013Experimental investigation of thermoforming carbon fibre-reinforced polyphenylene sulphide compositescitations
- 2012Thermoforming carbon fibre-reinforced thermoplastic compositescitations
- 2012Digital Methods for Process Development in Manufacturing and Their Relevance to Value Driven Designcitations
- 2011The theoretical prediction of thermoformed carbon fibre reinforced thermoplastic materials in support of optimal process designcitations
- 2011Part form prediction methods for carbon fibre reinforced thermoplastic composite materials
- 2010Development of a digital methodology for composite process & manufacture in aerospace assembliescitations
- 2006Modified stiffened panel analysis methods for laser beam and friction stir welded aircraft panelscitations
- 2006The Characterization of Friction Stir Welding Process Effects on Stiffened Panel Buckling Performance
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document
The theoretical prediction of thermoformed carbon fibre reinforced thermoplastic materials in support of optimal process design
Abstract
This paper develops a theoretical model capable of predicting the deformation behaviour of a thermoplastic composite, 90° angled part during manufacture using a thermoforming process. The model is intended to support a virtual approach to understanding process capability. This in turn will increase the utility of digital manufacturing methods by enabling the use of more realistic part forms in product and process design. A typical V-shape carbon fibre reinforced polyphenylene sulfide (PPS) composite part was selected as the demonstrator. A custom built thermoforming cell was used to manufacture a series of samples to investigate the process-induced shape variation of the part based on a range of tooling temperatures during cooling. It was found that the influence of mould temperature on the deformation is more dependent on the composite's thermal properties. After de-moulding, the part deforms because of the thermal and crystallization shrinkage during the cooling from mould temperature to room temperature. For the same ply orientation, the final bend angles decrease with increasing mould temperature. The processing conditions were then used as the basis of a theoretical model designed to predict the final part angle. The theoretical model was developed according to basic equilibrium, compatibility, and constitutive equations. The displacement model was supplemented with boundary and continuity conditions to solve final laminate deformations. In the constitutive model, thermal and crystallization shrinkage strains are considered because of semi-crystalline and very low moisture absorption properties of PPS. The stiffness matrix is considered as temperature dependent as the behaviour of PPS is highly temperature dependant. The largest difference between experimental and predicted results was 16.26% for the sample formed at the 170°C mould temperature whereas the calculation outcome for the sample formed with 110°C mould was within 1.44% of the experimental result. The calculations show that composite part ...