A5016279793- Aluminum Alloy Microstructure Properties
- Additive Manufacturing Materials and Processes
- Advanced X-ray Imaging Techniques
- Additive Manufacturing and 3D Printing Technologies
- Cellular and Composite Structures
- Microstructure and mechanical properties
- Aluminum Alloys Composites Properties
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Magnesium Alloys: Properties and Applications
- Advanced ceramic materials synthesis
- Microstructure and Mechanical Properties of Steels
- Electron and X-Ray Spectroscopy Techniques
- Advanced materials and composites
- X-ray Diffraction in Crystallography
- Mechanical Behavior of Composites
- Solidification and crystal growth phenomena
- Pickering emulsions and particle stabilization
- Innovations in Concrete and Construction Materials
- Metal Forming Simulation Techniques
- Titanium Alloys Microstructure and Properties
- Cryospheric studies and observations
- Climate change and permafrost
- High-Velocity Impact and Material Behavior
- High Temperature Alloys and Creep
Université Grenoble Alpes
2015-2024
Science et Ingénierie des Matériaux et Procédés
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Institut polytechnique de Grenoble
2010-2024
Université Joseph Fourier
2008-2013
The University of Tokyo
2011
Third generation synchrotron light sources offer high photon flux, partial spatial coherence, and ~10-10 s pulse widths. These enable hard X-ray phase-contrast imaging (XPCI) with single-bunch temporal resolutions. In this work, we exploited the MHz repetition rates of pulses combined indirect detection to demonstrate potential XPCI millions frames per second multiple-frame recording. This allows for visualization aperiodic or stochastic transient processes which are impossible be realized...
Aluminium alloys designed for additive manufacturing with Zr addition exhibit heterogeneous microstructures from the grain scale down to atomic scale. Bimodal structures submicron equiaxed grains near melt pool boundaries and columnar at interiors are observed. The regions consisting of interconnected in 3D. tensile response these often shows presence a stress plateau or yield drop phenomenon strength but underlying mechanisms still need be clarified. Herein we investigate new...
Low-dose CT scans are very fast, but they feature strong pixel noise which, in turn, invites for efficient denoising the same way that image blur sharpening images. Wiener-deconvolution serves as a starting point, combining these two operations linear Fourier filter. It may apply 2D or 3D and requires merely estimates of Signal-to-Noise Ratio SNR2 well system Modulation Transfer Function (MTF). Meanwhile, any filter is unable to adapt local contrast variations Therefore, convolutional neural...
Additive manufacturing is a novel way of processing metallic cellular structures from powder bed. However, differences in geometry have been observed between the CAD and produced structures. Struts has analysed using X-ray microtomography. From 3D images, criterion 'mechanically efficient volume' defined for stiffness prediction. The variation this with process parameters, strut size orientation studied. effective struts computed by finite element analysis on images obtained tomography....
Structural and mechanical characterization of stainless steel hollow spheres foams has been investigated by X-ray tomography. In-situ compression tests enable to study the main deformation mechanisms that govern plasticity foam. FEM calculations a pair connected have performed in order identify conditions under which either mechanism is operative. Then macroscopic phenomenological model for compressive behaviour developed. It describes overall material following damage progression. The gives...
Abstract. Understanding the slow densification process of polar firn into ice is essential in order to constrain age difference between matrix and entrapped gases. The progressive microstructure evolution column with depth leads pore closure gas entrapment. Air transport models usually include a closed porosity profile based on available data. Pycnometry or melting–refreezing techniques have been used obtain ratio total air content pores, respectively. X-ray-computed tomography complementary...