| 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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Garoz Gómez, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2020Influencing parameters on measurement accuracy in dynamic mechanical analysis of thermoplastic polymers and their compositescitations
- 2020Mesoscale finite element analysis of cracked composite laminates under out-of-plane loads using 3D periodic boundary conditionscitations
- 2019Consistent application of periodic boundary conditions in implicit and explicit finite element simulations of damage in compositescitations
- 2019Model to accurately predict out-of-plane shear stiffness reduction in general cracked laminatescitations
- 2019Mesoscale analysis of ply-cracked composite laminates under in-plane and flexural thermo-mechanical loadingcitations
- 2018Stress-strain synchronization for high strain rate tests on brittle compositescitations
- 2016Drop: weight impact response measurement and prediction for quasi - isotropic carbon - epoxy composite laminates
- 2016Micro-scale finite element simulation of the viscoelastic damping in unidirectional fiber reinforced composites
- 2016Testing for tensile rate-dependence in composite laminates
- 2016Avoiding interpenetrations and the importance of nesting in analytic geometry construction for Representative Unit Cells of woven composite laminatescitations
- 2016Numerical study of transitional brittle-to-ductile debonding of a capsule embedded in a matrixcitations
- 2014Crack propagation in micro-encapsulated polymer for self-healing: numerical modelling and experimental validation
- 2007Taylor cones of ionic liquids from capillary tubes as sources of pure ions: The role of surface tension and electrical conductivitycitations
Places of action
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article
Influencing parameters on measurement accuracy in dynamic mechanical analysis of thermoplastic polymers and their composites
Abstract
Long-term predictions of material properties such as stiffness and creep resistance are important in many engineering applications and require high reliability and accuracy. This is especially true for polymer materials and their composites as their viscoelastic nature results in time-dependent material behaviour and any measurement uncertainties or errors amplify in long-term predictions. To measure this behaviour at smallest loadings, Dynamic Mechanical Analysis (DMA) is frequently declared as an ideal method. However, the measurement accuracy and repeatability of this method is strongly influenced by (i) the testing fixture and corresponding loading mode, (ii) the sample preparation and (iii) the plotting scale to interpret the test results. In this study, relevant experimental parameters were found for DMA and a proper procedure was designed, which was then applied to measure the viscoelastic behaviour of a highly temperature and creep resistant thermoplastic polymer (polyethersulfone) and of a highly graphite filled polypropylene composite. In combination with finite element simulations and in-situ strain measurements by digital image correlation (DIC), the main influences on measurement accuracy of three-point-bending DMA were identified and subsequently used to determine measurement guidelines. Using these guidelines, DMA measurements allow quantitative determination of the viscoelastic response for rigid polymer and composite materials.