Results 51 to 60 of about 78,818 (258)

STRESSED CONDITION OF THE WRAPPING WITHOUT-DRIVE HYDROTECHNICAL TUNNEL OF THE CIRCULAR FORM, PROPOSED IN ANISOTROPIC ROCK GROUND

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives. The aim of the study is a parametric analysis of the stress-free lining of a pressureless hydraulic tunnel of circular section, and adjacent anisotropic rock from its own weight of the ground medium at different ratios of the elastic ...
D. T. Bautdinov   +2 more
doaj   +1 more source

Metabolic and Fluid Biomarkers Support Microglia Activation in Amyotrophic Lateral Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Amyotrophic lateral sclerosis is an incurable neurodegenerative disease involving motor neuron degeneration and metabolic and immune dysfunction. We combined clinical data, cerebrospinal fluid biomarkers and fluorodeoxyglucose positron emission tomography with magnetic resonance imaging to investigate the role of reactive microglia in disease ...
Matteo Zanovello   +10 more
wiley   +1 more source

Bounds on the effective isotropic moduli of thin elastic composite plates

open access: yesArchives of Mechanics, 2010
The main aim of this paper is to estimate the effective moduli of an isotropic elastic composite, analyzed within the framework of the Kirchhoff-Love theory of thin plates in bending.
G. Dzierżanowski
doaj   +1 more source

Butterflies in the Isotropic Plane

open access: yesKoG : znanstveno-stručni časopis Hrvatskog društva za konstruktivnu geometriju i kompjutorsku grafiku, 2004
A real affine plane A_2 is called an isotropic plane I_2, if in A_2 a metric is induced by an absolute {; ; ; ; ; f, F}; ; ; ; ; , consisting of the line at infinity f of A_2 and a point F on f. In this paper the well-known Butterfly theorem has been adapted for the isotropic plane.
Beban-Brkić, Jelka, Volenec, Vladimir
openaire   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 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

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

SH Wave Scattering Problems for Multiple Orthotropic Elliptical Inclusions

open access: yesAdvances in Mechanical Engineering, 2013
A volume integral equation method (VIEM) is applied for the effective analysis of elastic wave scattering problems in unbounded solids containing general anisotropic inclusions.
Jung-Ki Lee, Young-Bae Han, Young-Ju Ahn
doaj   +1 more source

Reciprocity in an isotropic plane

open access: yesRad Hrvatske akademije znanosti i umjetnosti. Matematičke znanosti, 2014
The concept of reciprocity with respect to a triangle is introduced in an isotropic plane. A number of statements about the prop erties of this mapping is proved. The images of some well known elements of a triangle with respect to this mapping will be studied.
Kolar-Šuper, Ružica   +2 more
openaire   +4 more sources

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

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