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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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Andreasen, Jens Henrik
Aalborg University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2019Interfacial crack arrest in sandwich beams subjected to fatigue loading using a novel crack arresting device – numerical modellingcitations
- 2017Novel crack stopper concept for lightweight foam cored sandwich structures - Experimental validation, fe-modelling and potential for use in structures
- 2016Novel crack stopper concepts for lightweight foam cored sandwich structures - Performance under static and fatigue loads, FE-modelling and potential for use in real structures
- 2015Investigation of the residual stress state in an epoxy based specimen
- 2015Interfacial crack arrest in sandwich beams subjected to fatigue loading conditions
- 2014A comparison of gel point for a glass/epoxy composite and a neat epoxy material during isothermal curingcitations
- 2013Thermo-mechanical Characterisation of In-plane Properties for CSM E-glass Epoxy Polymer Composite Materialscitations
- 2013Thermo-mechanical Characterisation of In-plane Properties for CSM E-glass Epoxy Polymer Composite Materials:Part 2: Young's Moduluscitations
- 2013Thermo-Mechanical Characterisation of In-Plane Properties for CSM E-glass Epoxy Polymer Composite Materials – Part 1citations
Places of action
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article
A comparison of gel point for a glass/epoxy composite and a neat epoxy material during isothermal curing
Abstract
Determination of gel point is important for a modelling assessment of residual stresses developed during curing of<br/>composite materials. Residual stresses in a composite structure may have a detrimental effect on its mechanical performance<br/>and compromise its integrity. In this article, the evolution in bending stiffness of a glass/epoxy composite<br/>material during an isothermal curing process is examined to identify different material stages and behaviour. Differential<br/>scanning calorimetry and dynamic mechanical analysis are used to analyse the material behaviour. Gelation is identified as<br/>a clear onset in bending stiffness, and vitrification is seen as a decrease in the bending stiffness rate. Often gel point<br/>predictions for composite materials are based on neat matrix measurements. However, the results presented in this<br/>article demonstrate that the gel point is affected by the presence of the fibre reinforcement.