| 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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Zghal, Jihed
Laboratoire Angevin de Mécanique, Procédés et InnovAtion
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Elaboration et caractérisation d'un matériau à gradient de fonction
- 2022Physicochemical and Antibacterial Properties of Bioactive Retrograde Filling Materialscitations
- 2021Analysis of the delayed damage model for three one-dimensional loading scenariicitations
- 2020Physicochemical and Antibacterial Properties of Novel, Premixed Calcium Silicate-Based Sealer Compared to Powder–Liquid Bioceramic Sealercitations
- 2017High-resolution elastic analysis of thin-ply composite laminatescitations
- 2017High-resolution elastic analysis of thin-ply composite laminatescitations
- 2017High-resolution elastic analysis of thin-ply composite laminatescitations
- 2016A crystal plasticity based approach for the modelling of high cycle fatigue damage in metallic materialscitations
- 2016High cycle fatigue behavior of a HC360LA high-strength low-alloy steel : damage, plasticity and associated dissipative phenomena
- 2015Development of a polycrystalline approach for the modelling of high cycle fatigue damage: Application to a HSLA steel
Places of action
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thesis
High cycle fatigue behavior of a HC360LA high-strength low-alloy steel : damage, plasticity and associated dissipative phenomena
Abstract
The present work, which is integrated in the IRT Jules Verne APSTRAM project, focuses on the high cycle fatigue behavior of a ferritic high-strength low-alloy steel (HC360LA). First, different stress-controlled cyclic tests are carried out to study the influence of loading conditions and pre-straining on the fatigue behavior. According to the experimental results, a uniaxial tension pre-straining allows for a significant increase of the fatigue strength. Using the experimental dataset (force, elongation and temperature), an important effort is made to estimate the fraction of strain energy that is either dissipated into heat or stored within the material during cyclic tests. The strong correlation between the number of cycles to failure and heat dissipated energy emphasizes the importance of plasticity in the process driving to fatigue failure. Second, a polycrystalline model is proposed to describe the fatigue behavior of metallic materials in the high cycle fatigue regime. To consider the anisotropy of plastic properties, the constitutive model is developed at the grain scale within a crystal plasticity framework. It uses continuum damage mechanics to describe the progressive degradation of mechanical properties within an anisotropic context. The constitutive model is then integrated within a self-consistent formulation to consider the polycrystalline nature of metallic materials. Finally, the proposed model allows for investigating the fatigue behavior of the HC360LA steel at a microscopic scale. Damage is found to be highly localized in some specific grains. As a result, while fatigue damage results in a progressive decrease of elastic stiffness at the crystal scale, the elastic properties are not significantly affected at the macroscopic scale. Also, the contribution of damage to heat dissipation is negligible. The correlation between energy dissipation and fatigue failure is therefore a consequence of the strong coupling between plasticity and damage.