| 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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Baran, Isnet
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2022Analysis of voids in filament wound composites using a machine-learning based segmentation tool
- 2022Modeling of rain erosion damage and lifetime of wind turbine blades
- 2022Experimental Investigation of the Interlaminar Failure of Glass/Elium® Thermoplastic Composites Manufactured With Different Processing Temperaturescitations
- 2021Material characterization of a pultrusion specific and highly reactive polyurethane resin systemcitations
- 2021On the temperature evolution during continuous laser-assisted tape winding of multiple C/PEEK layerscitations
- 2021A fully coupled local and global optical-thermal model for continuous adjacent laser-assisted tape winding process of type-IV pressure vesselscitations
- 2021The influence of inter-laminar thermal contact resistance on the cooling of material during laser assisted fiber placementcitations
- 2021Optical characterization of fiber-reinforced thermoplastic tapes for laser-based composite manufacturingcitations
- 2020Non-uniform crystallinity and temperature distribution during adjacent laser-assisted tape winding process of carbon/PA12 pipescitations
- 20203D Numerical modeling of laser assisted tape winding process of composite pressure vessels and pipes-effect of winding angle, mandrel curvature and tape widthcitations
- 2020A new global kinematic-optical-thermal process model for laser-assisted tape winding with an application to helical-wound pressure vesselcitations
- 2020New process optimization framework for laser assisted tape winding of composite pressure vesselscitations
- 2020Optimization of the Interacting StiffenedSkins and Ribs Made of Composite Materialscitations
- 2020Experimental and computational analysis of the polymerization overheating in thick glass/Elium® acrylic thermoplastic resin compositescitations
- 2020Temperature variation during continuous laser-assisted adjacent hoop winding of type-IV pressure vesselscitations
- 2020Optimization of the laser-assisted tape winding process using an inverse kinematic-optical-thermal modelcitations
- 2020Characterization of interdiffusion mechanisms during co-bonding of unsaturated polyester resin to thermoplastics with different thermodynamic affinitiescitations
- 2018A level-set-based strategy for thickness optimization of blended composite structurescitations
- 2018Meso-scale process modelling strategies for pultrusion of unidirectional profiles
- 2018Assessment of failure and cohesive zone length in co-consolidated hybrid C/PEKK butt jointcitations
- 2017Thermal modeling strategies for laser assisted tape winding process
- 2017In-line physics-based model simulation for process modeling of laser tape winding
- 2017Thermal modeling strategies for laser assisted tape winding (LATW) process
- 2016Process induced transverse shear stresses in thick unidirectional pultruded profiles
- 2015On the mechanical behaviour of a butt jointed thermoplastic composite under bending
- 2015Investigation of the residual stress state in an epoxy based specimen
- 2014Investigation of process induced residual stresses and deformations for industrially pultruded parts having UD and CFM layers
- 2014Investigation of the spring-in of a pultruded l-shaped profile for various processing conditions and thicknessescitations
- 2014Numerical process simulations for industrially pultruded profiles
Places of action
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article
Investigation of the residual stress state in an epoxy based specimen
Abstract
rocess induced residual stresses may play an important role under service loading conditions for fiber reinforced composite. They may initiate premature cracks and alter the internal stress level. Therefore, the developed numerical models have to be validated with the experimental observations. In the present work, the formation of the residual stresses/strains are captured from experimental measurements and numerical models. An epoxy/steel based sample configuration is considered which creates an in-plane biaxial stress state during curing of the resin. A hole drilling process with a diameter of 5 mm is subsequently applied to the specimen and the released strains after drilling are measured using the Digital Image Correlation (DIC) technique. The material characterization of the utilized epoxy material is obtained from the experimental tests such as differential scanning calorimetry (DSC) for the curing behavior, dynamic mechanical analysis (DMA) for the elastic modulus evolution during the process and a thermo-mechanical analysis (TMA) for the coefficient of thermal expansion (CTE) and curing shrinkage. A numerical process model is also developed by taking the constitutive material models, i.e. cure kinetics, elastic modulus, CTE, chemical shrinkage, etc. together with the drilling process using the finite element method. The measured and predicted in-plane residual strain states are compared for the epoxy/metal biaxial stress specimen.