Results 41 to 50 of about 27,675 (302)

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

An hybrid initial value method for singularly perturbed delay differential equations with interior layers and weak boundary layer

Ain Shams Engineering Journal, 2018
In this paper, an hybrid initial value method on Shishkin mesh is suggested to solve singularly perturbed boundary value problem for second order ordinary delay differential equation with discontinuous convection coefficient and source term.
V. Subburayan
doaj   +1 more source

Experimental study of distribution and quantitative characterization of discontinuous oil phase based on micro-CT

Frontiers in Earth Science, 2023
When a sandstone reservoir enters the ultra-high water cut stage, the oil phase changes from continuous to discontinuous, which results in difficulties in the further development and utilization of the reservoir.
Jiangshan Yang, Gaojun Shan, Zhiqiang Wang, Qi Zhang, Yongfei Yang, Wenjie Ma   +5 more
doaj   +1 more source

Stable Determination of the Discontinuous Conductivity Coefficient of a Parabolic Equation [PDF]

SIAM Journal on Mathematical Analysis, 2010
We deal with the problem of determining a time varying inclusion within a thermal conductor. In particular we study the continuous dependance of the inclusion from the Dirichlet-to-Neumann map. Under a priori regularity assumptions on the unknown defect we establish logarithmic stability estimates.
Michele Di Cristo, Sergio Vessella
openaire   +5 more sources

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

Advanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi, Hiroyuki Awano, Kenji Tanabe   +2 more
wiley   +1 more source

Dichotomies for systems with discontinuous coefficients [PDF]

Bulletin of the Australian Mathematical Society, 1992
In this work we are concerned with the problem of the existence of an exponential dichotomy for the linear singularly perturbed system εx′ = A(t)x, where the matrix A(t) is piecewise uniformly continuous, that is, A(t) admits points of discontinuity but is uniformly continuous in any interval where it is continuous.
openaire   +2 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

The Heat Equation Solution Near the Interface Between Two Media

Моделирование и анализ информационных систем, 2017
Physical  phenomena  that arise near the boundaries  of media with different characteristics, for example,  changes in temperature at  the  water-air interface,  require  the  creation  of models for their  adequate description. Therefore,  when setting 
Natalia T. Levashova, Olga A. Nikolaeva
doaj   +1 more source

Logistic Dirichlet problems with discontinuous coefficients

Journal de Mathématiques Pures et Appliquées, 2003
The author studies existence of positive solutions to semilinear Dirichlet eigenvalue problems for diffusive logistic equations with discontinuous coefficients which model population dynamics in environments with spatial heterogeneity. Precisely, let \(\Omega\subset {\mathbb R}^N,\) \(N\geq3,\) be a bounded and \(C^{1,1}\)-smooth domain and ...
openaire   +1 more source

Spikes for the Gierer–Meinhardt System with Discontinuous Diffusion Coefficients [PDF]

Journal of Nonlinear Science, 2009
This paper deals with the Gierer-Meinhardt system, in \((-1,+1)\) \[ a_t=\varepsilon^2a_{xx}-a+\frac{a^2}{h}, \qquad \tau h_t=(D(x)h_x)_x-h+a^2, \] associated with the Neumann boundary conditions \[ a_x(-1)=a_x(+1)=0\quad h_x(-1)=h_x(+1)=0.
Juncheng Wei, Matthias Winter
openaire   +1 more source