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Communication Dans Un Congrès Année : 2013

Synchrotron imaging characterization and numerical simulation of short fatigue crack propagation in polycrystals

Résumé

Short fatigue crack propagation in polycrystalline materials is strongly influenced by microstructural features, in particular grain orientation and grain (and phase) boundaries.To investigate this three-dimensional problem, Synchrotron 3D imaging techniques are combined. We use diffraction contrast tomography in order to reconstruct the polycrystalline microstructure of a notched Titanium alloy sample. The crack propagation history is monitored in-situ by repeated phase contrast tomography acquisitions.Crystal plasticity finite element computations are carried on the real microstructure in an attempt to compare numerically simulated against experimentally observed crack propagation behavior.
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Dates et versions

hal-01579913 , version 1 (31-08-2017)

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  • HAL Id : hal-01579913 , version 1

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Yoann Guilhem, Wolfgang Ludwig, Henry Proudhon, Jia Li. Synchrotron imaging characterization and numerical simulation of short fatigue crack propagation in polycrystals. TMS 2013 Conference, Mar 2013, San Antonio, United States. ⟨hal-01579913⟩
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