Results 221 to 230 of about 30,077 (264)
Some of the next articles are maybe not open access.
Microstructure Fingerprinting for Heterogeneously Oriented Tissue Microenvironments
2023Most diffusion biophysical models capture basic properties of tissue microstructure, such as diffusivity and anisotropy. More realistic models that relate the diffusion-weighted signal to cell size and membrane permeability often require simplifying assumptions such as short gradient pulse and Gaussian phase distribution, leading to tissue features ...
Khoi Minh Huynh +3 more
openaire +2 more sources
Microstructured Reactors for Heterogeneous Catalytic Processes.
ChemInform, 2004Microstructured reactors are mainly characterized by their very high surface to volume ratio compared to traditional chemical reactors. Multichannel microreactors having channel diameters in the order of ten to several hundred micrometers have specific surface areas up to 50’000 m2/m3.
openaire +1 more source
Response Statistics for Random Heterogeneous Microstructures
SIAM/ASA Journal on Uncertainty Quantification, 2014A practical method is developed for calculating statistics of material responses at small scale and functionals of these responses. The method is applied to characterize probabilistically potentials in specimens with conductivities that fluctuate randomly in space.
openaire +1 more source
In‐service sensitization of a microstructurally heterogeneous AA5083 alloy
Materials and Corrosion, 2015It was revealed that an AA5083 alloy had been severely sensitized after 40 years in service at ground atmosphere temperature. The degree of sensitization of the various regions through the alloy plate thickness is different, which is associated with the non‐uniform distribution of Mg through the plate thickness.
Wei, W. +5 more
openaire +2 more sources
Modeling Heterogeneous Media With Microstructures of Different Scales
Journal of Applied Mechanics, 2006The objective of this paper is to extend the framework of the continuum theory so that it can capture the properties that are embedded in the microstructure or nanostructure and still keep its simplicity and efficiency. The model thus developed is capable of accounting for local deformation of microstructures in solids especially their micro- (local ...
Sun, C. T., Huang, G. L.
openaire +2 more sources
Heterogeneous fibre microstructures and their influence on failure
Journal of Microscopy, 1993SUMMARYA detailed microscopic, experimental and micromechanical evaluation of fibre damage initiation in a unidirectional aluminium matrix‐silicon carbide fibre (SCS‐8TM) composite has been performed for a monotonic load sequence. The salient fibre features include a 33‐μm‐diameter monofilament turbostratic carbon (C) core, a ∼ 1·5‐μm pyrolytic C layer,
E. ZYWICZ +4 more
openaire +1 more source
Strength of alloys with heterogeneous microstructures
Czechoslovak Journal of Physics, 1985The strengthening mechanisms of alloys composed of more than one phase are discussed in a systematic manner. A definition is proposed for certain types of microstructures. Plastic strain of fine dispersion structures (precipitation-hardened alloys) can vary between homogeneous and extremely localized in a few slip bands.
openaire +1 more source
Microstructural heterogeneity and dynamic shear localization
Applied Physics Letters, 2012Dynamic shear localization attracted interest as both experimental and theoretical evidence suggested that its origins are not only due, as believed, to thermal softening, but are most likely related to microstructural evolutions, the latter being driven by a critical value of the stored strain energy.
S. Osovski, D. Rittel
openaire +1 more source
Microstructure of Heterogeneous Mixtures for Gasless Combustion
Combustion, Explosion and Shock Waves, 2004The microstructure of a mixture for gasless combustion and its compactability were studied. The electrical conductivity, thermal conductivity, and burning rate of the mixture were measured, and metallographical studies were performed. It was found that particle shape and the ability of the particles to form a continuous skeleton play a determining role
N. A. Kochetov +4 more
openaire +1 more source
Design of Heterogeneous Microstructures by Recrystallization
1977The theory for the control of grain size and shape of heterogeneous alloys by thermal and mechanical treatment is described. The amount, size, and distribution of particles, coherency with the matrix phase, and interaction with dislocations determine the defect structure of the alloy.
openaire +1 more source