Results 81 to 90 of about 8,453 (266)

spTest: An R Package Implementing Nonparametric Tests of Isotropy

open access: yesJournal of Statistical Software, 2018
An important step in modeling spatially-referenced data is appropriately specifying the second order properties of the random field. A scientist developing a model for spatial data has a number of options regarding the nature of the dependence between ...
Zachary D. Weller
doaj   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu   +10 more
wiley   +1 more source

CALCULATION OF PHASE AND GROUP ANGLES, SLOWNESS SURFACES AND RAY TRACING IN TRANSVERSELY ISOTROPIC MEDIA Cálculo de ángulos de fase y grupo, superficies de lentitud y trazado de rayos en medios transversalmennte isótropos

open access: yesCT&F Ciencia, Tecnología & Futuro, 2006
This paper presents some fundamental concepts of seismic anisotropy specifically those which have hexagonal symmetry (ordinarily called transversely isotropic in geophysics jargon).
Karen Pachano   +5 more
doaj  

ISOTROPY ANALYSIS OF METAMATERIALS

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2015
Metamaterials – artificial periodic structures with subwavelength feature sizes – can be characterized with macroscopic electromagnetic properties, like refractive index and wave impedance, just like homogeneous materials.
Arnold Kalvach, Zsolt Szabó
doaj   +1 more source

Higher isotropy

open access: yesTheory and Applications of Categories, 2018
The objective in this paper is four-pronged. \begin{itemize} \item[1.] to develop the elementary theory of isotropy groups and isotropy quotients of small categories. \item[2.] to present a sequence of categories $\mathbb{X}\left[ \kappa\right] $ for each small ordinal $\kappa$ so that the isotropy quotient sequence of $\mathbb{X}\left[ \kappa\right] $
Funk, J., Hofstra, P., Khan, S.
openaire   +2 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Spectral Bounds on Orbifold Isotropy [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2005
20 pages, 6 ...
openaire   +2 more sources

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

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