Results 201 to 210 of about 338 (253)

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

The PRIMA Thesaurus for Materials Science and Engineering

Advanced Engineering Materials, EarlyView.
The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa, Alexey Boubnov, Dario De Angelis, Catriona Eschke, Maximilian Kabbe, Felix Kraus, Mirco Panighel, Richard Thelen, Davide Valentinis   +8 more
wiley   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

CO ₂ sequestration potential in Depleted Hydrocarbon fields - A geochemical approach. [PDF]

Open Res Eur
Gianni E, Tyrologou P, Behnous D, Pál Farkas M, Fernández-Canteli Álvarez P, García Crespo J, Chacartegui Ramirez R, Koukouzas N, Carneiro J.   +8 more
europepmc   +1 more source

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Constructive Order Theory

MLQ, 2001
An upper bound \(s\) of a subset \(Y\) of a poset \(P\) is called a constructive supremum of \(Y\) if there exists a function \(\psi: P\to Y\) such that \(s\leq x\Leftrightarrow \psi(x)\leq x\) for all \(x\in P\). It is proved that the axiom of choice is equivalent to the postulate that every supremum is constructive, and also to the hypothesis that ...
openaire   +2 more sources

A Personalized Theory of Theory Construction

Personality and Social Psychology Review, 2004
This article describes my personal approach to theory construction. I liken the construction of a theory to the solution of a mathematical puzzle in which the answer is not in the back of the book. I touch on (a) the development of a theoretical perspective, (b) the identification of a specific problem, and (c) the development of a theory to address ...
openaire   +2 more sources

Constructive Many-Body Theory

Reviews in Mathematical Physics, 1994
We review the rôle played by renormalization, particle-number symmetry breaking, Goldstone bosons and the renormalization group in a mathematically rigorous construction of many-Fermion models at temperature zero.
FELDMAN, JOEL, MAGNEN, JACQUES, RIVASSEAU, VINCENT, TRUBOWITZ, EUGENE   +3 more
openaire   +4 more sources

THE CONSTRUCTIVE THEORY OF INVARIANTS

Mathematics of the USSR-Izvestiya, 1982
In this paper we find an explicit upper bound on the number of elements of a minimal homogeneous system of generators of the algebra of invariants of an arbitrary connected semisimple linear group over an algebraically closed field of characteristic zero. We also show that the approach to the solution of this problem proposed by Dieudonn?
openaire   +2 more sources