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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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Kim, Byung Chul
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Improved impact damage resistance of tapered composite laminates using a ply scarfing techniquecitations
- 2021Effect of the surface morphology of SLM printed aluminium on the interfacial fracture toughness of metal-composite hybrid jointscitations
- 2020Analysis of novel hybrid joints for composite struts
- 2019Material selection for automated dry fiber placement using the analytical hierarchy processcitations
- 2018A metrology-based technique for Automated Fibre Placement programming strategy optimisation
- 2018Experimental Characterisation of In-plane Shear Behaviour of Uncured Thermoset Prepregs
- 2018Feature-Based Design for Manufacturing Guidelines for Dry Fibre AFP
- 2018Feature-Based Design for Manufacturing Guidelines for Dry Fibre AFP
- 2017Advanced automated tape laying with fibre steering capability using continuous tow shearing mechanism
- 2017Infusion characteristics of preforms manufactured by automated dry fibre placement
- 2016Effect of Material Characteristics on the Layup Quality of the Continuous Multi-Tow Shearing Process
- 2015Manufacturing Characteristics of the Continuous Multi-Tow Shearing for High-Volume Manufacturing of Tow-Steered Composites
- 2015Computer aided modelling of variable angle tow composites manufactured by continuous tow shearingcitations
- 2014Manufacturing characteristics of the continuous tow shearing method for manufacturing of variable angle tow compositescitations
- 2013Compression after impact strength of a buckling resistant tow steered panel
- 2013A novel approach for manufacturing variable angle tow composites - Continuous tow shearing
- 2012Continuous tow shearing for manufacturing variable angle tow compositescitations
- 2012Multi-tow shearing mechanism for high-speed manufacturing of variable angle tow composites
- 2011Tow placement apparatus and methods. GB1111702.5
- 2011Limitations of fibre placement techniques for variable angle tow composites and their process-induced defects
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document
Experimental Characterisation of In-plane Shear Behaviour of Uncured Thermoset Prepregs
Abstract
The generation of defects (such as wrinkles and tow pull off) in the course of the steering process of automated fibre placement (AFP) is one of the critical limitations of this technique for the manufacturing of composite laminates. The in-and out-of-plane properties of the prepreg materials used have a strong influence on the final quality. In this paper, the in-plane shear behaviour of uncured thermoset prepreg was characterised to analyse the limits of steering and derive material parameters for the model predicting defects. An off-axis tensile test was applied to unidirectional uncured prepregs subjected to different testing rates consistent with the AFP processes. Innitial tests on the influence of temperature were also performed. Test parameters were optimized to minimise earlier buckling of thin samples, non-uniformity of strain distribution. The results show expected strain-rate and less-expected strain dependency of apparent viscosity, as well as common trends in material response at range of temperaures as determinded previously for compaction behaviour of the same material. The data presented in this paper opens the way towards a new material model for predicting the quality of the steering of prepreg tapes in automated deposition processes.