Lectures > Lecture 1

Lecture 1 by Henry Proudhon, MINES ParisTech, PSL University, Centre des matériaux, CNRS, Evry, France.

Title: Meshing tomographic images to bridge experiments and material simulations.

Tomographic imaging provides the unique opportunity to couple experiments and material simulations. This is particularly true in the mechanics of material field where suitable finite element geometrical models of a specimen can be directly constructed from the image data. Depending on the nature of the image: either gray scale, binary or multi-label image, different methods can be used. After covering the basic concept of spatial discretization using a mesh (the different types of elements and element quality), state of the art methods will be reviewed and examples of application will be given.
In a second part, we will see how these techniques coupled to diffraction microstructure imaging in polycrystalline metals can enable direct experimental/simulation comparisons at the scale of the microstructure and ultimately improving the prediction of engineering properties such as strength or fatigue resistance. Throughout this course, data management, automated image processing, meshing strategy and the need for high performance computing will also be discussed.

Biography: Henry Proudhon, CNRS Senior Researcher at Centre des Matériaux MINES Paris, works on the link between material microstructure with deformation and damage at the micron scale using synchrotron X-ray tomography, diffraction and mechanical simulations.