Results 111 to 120 of about 158,032 (303)

Numerical Investigation on Stress Intensity Factor and J Integral in Friction Stir Welded Joint through XFEM method

open access: yesFracture and Structural Integrity, 2018
In fracture mechanics (domain of cracked environments), it is concerned to forecast the behavior of the structures until their ruin. Friction Stir Welding (FSW) is a new process for solid-state joining, it can weld high strength aluminum alloys from ...
Imane imane_elmeguenni Elmeguenni   +1 more
doaj  

Study on Wall Slip Critical Conditions of High-Burn-Rate Propellants Based on Rheological Tests and Inert Material Cleaning Technology

open access: yesApplied Sciences
Composite solid propellant mixers face severe post-mixing cleaning challenges, especially for high-burn-rate propellants. Manual cleaning remains necessary due to the high viscosity and friction sensitivity of energetic ballistic modifiers (EBMs), which ...
Bin Hou   +6 more
doaj   +1 more source

Modelling of elastoviscoplastic properties of the subgrade. Problem statement 1

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2016
A brief analysis of the physical and mechanical properties of materials, used in the construction of the rail bed, has shown that in scientific and technical literature there is scattered unsystematic information obtained under different physical ...
V. M. Bel’Kov
doaj   +1 more source

Fluorine‐Free Soft Nanocomposites for High‐Speed Liquid Impact Repellence

open access: yesAdvanced Functional Materials, EarlyView.
Fluorine‐free soft nanocomposite coatings are developed using silicone oil‐mediated mechanical‐stiffness control, enabling ‘dry’ liquid‐repellent surfaces that resist high‐speed water jet impacts up to ∼60 m/s. By tuning nanoparticle loading and oil content, the coatings also achieve >90% optical transparency, amphiphobicity with impact resistance to ...
Priya Mandal   +4 more
wiley   +1 more source

AI-Based Prediction of Numerical Earthquakes Using (Pseudo) Acoustic Emission

open access: yesApplied Mechanics
The Discrete Element Method is widely used in applied mechanics, particularly in situations where material continuity breaks down (fracturing, crushing, friction, granular flow) and classical rheological models fail (phase transition between solid and ...
Piotr Klejment
doaj   +1 more source

The Role of Friction in Compaction and Segregation of Granular Materials

open access: yes, 2003
We investigate the role of friction in compaction and segregation of granular materials by combining Edwards' thermodynamic hypothesis with a simple mechanical model and mean-field based geometrical calculations.
A. Barrat   +30 more
core   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Jamming II: Edwards' statistical mechanics of random packings of hard spheres

open access: yes, 2010
The problem of finding the most efficient way to pack spheres has an illustrious history, dating back to the crystalline arrays conjectured by Kepler and the random geometries explored by Bernal in the 60's.
Alexander   +73 more
core   +1 more source

Electric Field‐Dependent Conductivity as Probe for Charge Carrier Delocalization and Morphology in Organic Semiconductors

open access: yesAdvanced Functional Materials, EarlyView.
Applying a high electric field to a doped organic semiconductor heats up the charge carrier distribution beyond the lattice temperature, enhancing conductivity. It is shown that the associated effective temperature can be used to extract the effective localization length, which is a characteristic length scale of charge transport and provides ...
Morteza Shokrani   +4 more
wiley   +1 more source

Crack-Like Processes Governing the Onset of Frictional Slip

open access: yes, 2006
We perform real-time measurements of the net contact area between two blocks of like material at the onset of frictional slip. We show that the process of interface detachment, which immediately precedes the inception of frictional sliding, is governed ...
A Cochard   +44 more
core   +1 more source

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