Results 321 to 330 of about 9,312,203 (384)

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder, Ying Han, Tobias Fritsch, Bardia Hejazi, Alexander Ulbricht, Birgit Skrotzki, Giovanni Bruno   +6 more
wiley   +1 more source

Tribology of ZrC Coatings and Spherical Tips Acquired with Extraordinarily Stiff, Metal Atomic Force Microscopy Probes

Advanced Engineering Materials, EarlyView.
In this research, ZrC coatings are evaluated against various counterprobes at the microscale using novel super‐stiff atomic force microscopy cantilevers. The chemical composition of the coating is shown to be an important factor influencing coating hardness and Young's modulus, while surface roughness, counterprobe hardness, and surface energy are the ...
Piotr Jenczyk, Marcin Michałowski, Bogdan Warcholiński, Michał Milczarek, Adam Gilewicz   +4 more
wiley   +1 more source

Global marine modeling of CO₂ hydrate stability. [PDF]

Sci Rep
Tinivella U, Giustiniani M.
europepmc   +1 more source

Global dynamic characteristics of a piecewise smooth rotor/stator rubbing system with high speed. [PDF]

PLoS One
Wang S, Liu X, Liu Y, Ma J.
europepmc   +1 more source

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Fixed-Time Neural Control of Robot Manipulator With Global Stability and Guaranteed Transient Performance

IEEE transactions on industrial electronics (1982. Print), 2023
Nowadays, due to many limitations in reality, the optimization of tracking precision and convergence time has attracted the attention of researchers in robotics community.
Chengzhi Zhu, Yiming Jiang, Chenguang Yang   +2 more
semanticscholar   +1 more source

Global stability analysis of a fractional SVEIR epidemic model

Mathematical methods in the applied sciences, 2021
Mathematical modeling will allow us to make effective interventions by policy makers and determine a specific program for the country's health managers.
A. Nabti, B. Ghanbari
semanticscholar   +1 more source

Global Stability Results [PDF]

, 1993
In this chapter we present some general results on the global asymptotic stability and global attractivity of some quite general nonlinear difference equations of order greater than one. The global asymptotic stability of such equations is an unexplored area, still in its infancy, with great potential for applications.
V. L. Kocic, G. Ladas
openaire   +1 more source

Global stability of equilibria

Journal of Difference Equations and Applications, 2009
Let be of class C 1 (i.e. differentiable in the sense of Frechet with continuous derivative). In a paper published in 1960, Markus and Yamabe [19] conjectured that the origin is a global attractor ...
Mario Martelli, Massimo Furi, M. O'Neill
openaire   +2 more sources

Global stability and stabilization of polynomial systems

2007 46th IEEE Conference on Decision and Control, 2007
The problem of global stability and stabilization of polynomial systems is considered. Using semi-tensor product of matrices, an easily verifiable sufficient condition for the positivity of multi-variable polynomials is proposed. Assume a candidate of Lyapunov function is a polynomial, the above result provides a sufficient condition for the global ...
Hongsheng Qi, Daizhan Cheng
openaire   +2 more sources