Modelling and experimental determination of ultrasonic attenuation in polycrystalline materials

Autor: Oudaa, Massoud

Publikováno v: Matériaux. Université de Lyon, 2020. Français. ⟨NNT : 2020LYSEI067⟩

The flaw detection performance of ultrasonic non-destructive testing on polycrystalline materials can be impaired by a high attenuation of the ultrasonic beam induced by the scattering of ultrasonic waves through the grain boundaries. The objective o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a550bee1cc00b74720ae93fdb9e52732
https://tel.archives-ouvertes.fr/tel-03137847

Study of dislocation dynamics of copper single crystals under cyclic loading : Acoustic emission and microstructural characterization

Autor: L'hôte, Gabriel

Publikováno v: Matériaux. Université de Lyon, 2019. Français. ⟨NNT : 2019LYSEI125⟩

During the plastic deformation of crystalline materials, a soft plasticity, made up of many uncorrelated dislocation movements, can coexist with a wilder plasticity, in the form of collaborative movements: dislocation avalanches. The coexistence of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::fa23c49deac91732e15b421f6a0b4d76
https://theses.hal.science/tel-02935881

Full-field X-ray orientation imaging using convex optimization and a discrete representation of six-dimensional position - orientation space

Autor: Vigano , Nicola Roberto

Publikováno v: Materials. INSA de Lyon, 2015. English. 〈NNT : 2015ISAL0095〉
Materials. INSA de Lyon; Université de Antwerp, 2015. English. ⟨NNT : 2015ISAL0095⟩

This Ph.D. thesis is about the development and formalization of a six-dimensional tomography method, for the reconstruction of local orientation in poly-crystalline materials. This method is based on a technique known as diffraction contract tomograp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6c0a7e886b7b921e2b5470517c2b6a37
https://tel.archives-ouvertes.fr/tel-01339880/document