Results 31 to 40 of about 78,397 (271)

Effect of heat treatment on mechanical properties of CuCrZr triply periodic minimal surface structures fabricated by selective laser melting

open access: yesJournal of Materials Research and Technology, 2023
CuCrZr alloy has excellent conductivity, thermal conductivity, friction reduction and abrasion resistance, which can satisfy in different fields. Copper alloy porous structure is a new multifunctional structure with both structural and functional ...
Qifei Zhang   +9 more
doaj   +1 more source

Design of periodic foam structures for acoustic applications: Concept, parametric study and experimental validation

open access: yesMaterials & Design, 2019
Reticulated foams are widely used in noise control applications. However, difficulties in controlling the foaming process makes it difficult to control the microstructure and consequently the absorption characteristics of stochastic foams.
Sagar Deshmukh   +2 more
doaj   +1 more source

Procedural function-based modelling of volumetric microstructures [PDF]

open access: yes, 2011
We propose a new approach to modelling heterogeneous objects containing internal volumetric structures with size of details orders of magnitude smaller than the overall size of the object.
Alexander Pasko   +29 more
core   +1 more source

Convergence of iterative methods based on Neumann series for composite materials: theory and practice [PDF]

open access: yes, 2018
Iterative Fast Fourier Transform methods are useful for calculating the fields in composite materials and their macroscopic response. By iterating back and forth until convergence, the differential constraints are satisfied in Fourier space, and the ...
Milton, Graeme W.   +2 more
core   +2 more sources

Fourier-based schemes with modified Green operator for computing the electrical response of heterogeneous media with accurate local fields [PDF]

open access: yes, 2014
A modified Green operator is proposed as an improvement of Fourier-based numerical schemes commonly used for computing the electrical or thermal response of heterogeneous media.
Abdallah, Bassam   +2 more
core   +4 more sources

Micro-diffractive optical element arrays for beam shaping [PDF]

open access: yesEPJ Web of Conferences, 2022
We describe the design of Fourier type array generators and beam shapers as periodic configurations of refractive-diffractive optical elements in microscale to provide specific beam shaping and imaging functionaliies.
Gharbi Ghebjagh Shima   +2 more
doaj   +1 more source

Subnanometer Translation of Microelectromechanical Systems Measured by Discrete Fourier Analysis of CCD Images [PDF]

open access: yes, 2010
—In-plane linear displacements of microelectromechanical systems are measured with subnanometer accuracy by observing the periodic micropatterns with a charge-coupled device camera attached to an optical microscope.
Gijs, Martin A.M.   +3 more
core   +4 more sources

Effect of microstructure on dynamic compressive behavior of cellular materials [PDF]

open access: yesEPJ Web of Conferences, 2021
It is known that the microstructure of cellular materials has a significant impact on their compressive properties. To study these phenomena, a hierarchical Poisson disk sampling algorithm and Voronoi partitioning were used to create a 3D numerical ...
Tateyama Kohei, Watanabe Keiko
doaj   +1 more source

A jigsaw puzzle framework for homogenization of high porosity foams [PDF]

open access: yes, 2016
An approach to homogenization of high porosity metallic foams is explored. The emphasis is on the \Alporas{} foam and its representation by means of two-dimensional wire-frame models.
Crombez, Geert   +5 more
core   +6 more sources

Bone microstructure and atomic periodic disharmonization in osteoporosis

open access: yesUniversa Medicina, 2015
Background Both cortical and cancellous bone display a complex, porous microstructure whose properties depend on the macrostructure of bone as well as age and health of the individual.
Zairin Noor   +3 more
doaj   +1 more source

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