Nanogauges gratings for strain determination at nanoscale

Joseph Marae Djouda 1, 2 Guillaume Montay 1 Benoît Panicaud 1 Jérémie Beal 1 Yazid Madi 3, 2 Thomas Maurer 1
1 ICD - Institut Charles Delaunay
2 Ermess EPF
3 MAT - Centre des Matériaux
Abstract : The comprehension of deformation mechanisms and polycrystalline alloy properties is of great importance in materials science. One major challenge remains the measurements of the mechanical field components at the nanoscale. For the past twenty years, the development of nanotechnologies had a great impact on various scientific domains. Here we propose to take advantage of nanotechnologies in order to perform major breakthroughs in material strain determination. Indeed, in this study we investigate the use of metallic nanoparticles gratings to map local strains at the surface of materials. Nanoparticles can play the role of nanogauges, giving access to surface strains at the nanoscale by tracking their displacements during tensile tests performed under Scanning Electron Microscope (SEM). This original method is particularly helpful to map surface strains but also to evidence local heterogeneities as well to provide a direct comparison between local and macroscopic mechanical fields evolution. Therefore, this approach should be considered as an alternative technique both for academic and industrial researchers.
Keywords : Nanogauges Gratings Strain determination Heterogeneities Microstructure Nanoscale 2D mapping
Type de document :
Article dans une revue
Mechanics of Materials, Elsevier, 2017, 114, pp.268-278. 〈10.1016/j.mechmat.2017.08.014〉
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01601621
Contributeur : Odile Adam <>
Soumis le : lundi 2 octobre 2017 - 18:07:40
Dernière modification le : lundi 12 novembre 2018 - 10:58:36

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Joseph Marae Djouda, Guillaume Montay, Benoît Panicaud, Jérémie Beal, Yazid Madi, et al.. Nanogauges gratings for strain determination at nanoscale. Mechanics of Materials, Elsevier, 2017, 114, pp.268-278. 〈10.1016/j.mechmat.2017.08.014〉. 〈hal-01601621〉

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