Results 91 to 100 of about 1,026 (231)

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Graph spaces of first-order linear partial differential operators

Mathematical Communications, 2009
Symmetric positive systems of first-order linear partial differential equations were introduced by K.O. Friedrichs (1958) in order to treat the equations that change their type, like the equations modelling the transonic fluid flow. Recently, some progress in their understanding has been made by rewriting them in terms of Hilbert spaces, characterising
Antonić, Nenad, Burazin, Krešimir
openaire   +3 more sources

Stabilizing Solution for a Discrete-Time Modified Algebraic Riccati Equation in Infinite Dimensions [PDF]

, 2020
We provide necessary and sufficient conditions for the existence of stabilizing solutions for a class of modified algebraic discretetime Riccati equations (MAREs) defined on ordered Banach spaces of sequences of linear and bounded operators.
Viorica Mariela Ungureanu
core  

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

On B † - Splitting of Bounded Linear Operators on Ordered Hilbert space

Abstract We discuss a subclass of a positive splitting called B † −splitting of bounded linear operator over ordered Hilbert spaces. The necessary conditions for the existence of such splitting is discussed by assuming the nonnegativity of Moore-Penrose inverse of operators. We refor-mulate a method to construct B † − splitting.
B. Archana, T. Kurmayya
openaire   +1 more source

On the first eigenvalue of the linearized operator of the higher order mean curvature for closed hypersurfaces in space forms

Illinois Journal of Mathematics, 2004
Let \(M^n\) be a closed hypersurface immersed into an \((n+1)\)-dimensional Riemannian space form \(M^{n+1}\). The authors give sharp upper bounds for the first positive eigenvalue of the linearized operator of the higher order mean curvature of \(M^n\).
Alías, Luis J., Malacarne, J. Miguel
openaire   +3 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Positive operators compact in an auxiliary topology

, 1960
Of the several generalizations to infinite dimensional spaces of the Perron-Frobenius theorem on matrices with non-negative elements, two are outstanding for their freedom from ad hoc conditions. THEOREM A (Krein and Rutman [3] Theorem 6.1).
Frank Featherstone Bonsall, Frank Bonsall   +1 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source