| 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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Wiener, Johannes
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Investigation of background noise affecting AE data acquisition during tensile loading of FRPs
- 2023Determination of creep crack growth kinetics of ABS via the C* approach at different temperaturescitations
- 2023Concepts towards bio-inspired multilayered polymer-compositescitations
- 2023Comparing crack density and dissipated energy as measures for off-axis damage in composite laminatescitations
- 2022Mechanical properties of additively manufactured polymeric implant materials in dependence of microstructure, temperature and strain-rate
- 2022Influence of layer architecture on fracture toughness and specimen stiffness in polymer multilayer compositescitations
- 2021Optimization of Mechanical Properties and Damage Tolerance in Polymer-Mineral Multilayer Compositescitations
- 2020Using Compliant Interlayers as Crack Arresters in 3-D-Printed Polymeric Structurescitations
- 2020Exploiting the Carbon and Oxa Michael Addition Reaction for the Synthesis of Yne Monomerscitations
- 2019Application of the material inhomogeneity effect for the improvement of fracture toughness of a brittle polymercitations
- 2019Erhöhung der Bruchzähigkeit durch Multischichtaufbau
- 2019Bioinspired toughness improvement through soft interlayers in mineral reinforced polypropylenecitations
Places of action
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article
Application of the material inhomogeneity effect for the improvement of fracture toughness of a brittle polymer
Abstract
<p>In a multilayered structure with a crack, a spatial change in the mechanical properties of the material strongly influences the crack driving force. This material inhomogeneity effect can be utilized to improve the fracture toughness of a given structure by inserting thin, soft interlayers into the material. The effectiveness of this procedure has been demonstrated on high-strength materials, such as metallic alloys and ceramics. It is shown in this article that the material inhomogeneity effect can be also successfully applied to polymers and that it is possible to predict the improvement in fracture toughness by a numerical analysis. First, a numerical case study based on the configurational force concept is performed on a brittle polymer matrix with interlayers made of materials with different strength and Young's modulus. After selecting the most appropriate interlayer material, a composite is fabricated, which contains a single interlayer. Fracture toughness experiments show approximately 7 times higher fracture toughness for the composite in comparison to the homogeneous matrix material. Numerical fracture mechanics tests are performed on homogeneous and composite material using the cohesive zone model for crack growth simulation. A procedure to calibrate the cohesive zone parameters is worked out, which is relatively easy for the homogeneous material, but more sophisticated for the composite material. The numerical analysis provides a tool for predicting the fracture toughness of multilayered polymer composites.</p>