The aim of this paper is to present the advantages of using Digital Image Correlation (DIC) and Infrared Thermography (IRT) to investigate the thermomechanical behavior of aluminum at the scale of its microstructure. The study combines these complementary imaging techniques: Electron Backscatter Diffraction (EBSD) to characterise the microstructure of the sample, DIC to obtain strain fields and...

We provide optimal a priori estimates for nite element approximations of a model of rate-independent single-crystal strain-gradient plasticity. The weak formulation of the problem takes the form of a variational inequality in which the primary unknowns are the displacement and slips on the prescribed slip systems, as well as the back-stress associated with the vectorial microstress. It is shown...

Peptidyl-tRNA hydrolase cleaves the ester bond between tRNA and the attached peptide in peptidyl-tRNA in order to avoid the toxicity resulting from its accumulation and to free the tRNA available for further rounds in protein synthesis. The structure of the enzyme from Mycobacterium tuberculosis has been determined in three crystal forms. This structure and the structure of the enzyme from Esch...

Neuromorphic electronics has received considerable attention recent years, and its basic functional units are synaptic electronic devices. A two-terminal artificial synapse with sandwiched structure emulates plasticity of the biological synapses under action nerve-like electrical impulse signals. In this paper, <i>P</i>3 phase Na<sub>2/3</sub>Ni<sub>1/3</sub>...

Since hydrogen-plasticity interaction is a key feature in the study of hydrogen embrittlement, series nanoindentation tests were carried out to evaluate possible impact on dislocation structures formed during cyclic pre-straining nickel single crystal. Ex-situ and in-situ electrochemical performed cyclically pre-strained crystal nickel-hydrogen systems characterise change reduced modulus hardne...

Abstract In this work, it is investigated how grain boundaries influence the local strain determination by microstructural feature tracking (MFT) algorithm. method, tetrahedra are used as calculation unit. We apply MFT processing procedure on data obtained a crystal plasticity finite element modeling (CPFEM) simulation to explore uncertainties in calculated strains caused boundaries. Effects of...

A method combining crystal plasticity (CP), the eXtended Finite Element Method (XFEM), and cohesive zone model (CZM) with traction separation law is developed for an Al-Cu-Mg alloy to predict effect of grain orientation on fatigue crack propagation (FCP) during stage ?? within a single crystal. The simulation results show that all orientations, Goss possesses largest deflection, then followed b...