Results 71 to 80 of about 13,367,432 (261)

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge   +4 more
wiley   +1 more source

Modeling of modulus graded axisymmetric adhesive joints

open access: yes
This study presents a refined theoretical framework for the stress analysis of modulus graded axisymmetric adhesive joints which takes into account the radial stresses in the bonded assembly.
Kumar, Shanmugan, Scanlan, J.P.
core   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider   +4 more
wiley   +1 more source

Complex modulus estimation respecting causality: Application to viscoelastic bars

open access: yesEPJ Web of Conferences, 2012
The identification of linear visco-elasticity models mostly focuses on the real and imaginary parts of the Young’s modulus. Many methods have been proposed in the past to identify these material model parameters from experiments.
Lundberg B., Mohr D., Gary G., Collet P.
doaj   +1 more source

RECENT RESEARCHES OF THE LATERAL FLEXIBILITY OF RAIL THREAD UNDER COMBINED ACTION OF VERTICAL AND HORIZONTAL FORCES

open access: yesNauka ta progres transportu, 2015
Purpose. Studying the characteristics of spatial flexibility of rail thread is necessary for solving problems in calculation rails durability in full formulation, namely under combined action of vertical and horizontal forces and torque moment on the ...
E. I. Danilenko
doaj   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang   +12 more
wiley   +1 more source

GSOR method for the equality constrained least squares problems and the generalized least squares problems

open access: yes, 2002
In a recent paper [4], Li et al. gave a generalized successive overrelaxation (GSCR) method for the least squares problems. In this paper, we show that the GSOR method can be applied to the equality constrained least squares (LSE) problems and the ...
Li ZJ(李长军), Evans, DJ
core  

An Improved Energy Method For Determining Young'S Modulus By Instrumented Indentation Using A Berkovich Tip

open access: yes, 2008
We previously proposed a method for estimating Young's modulus from instrumented nanoindentation data based on a model assuming that the indenter had a spherical-capped Berkovich geometry to take account of the bluntness effect. The method is now further
Ong CW   +3 more
core   +1 more source

The Least Squares Stochastic Finite Element Method in Structural Stability Analysis of Steel Skeletal Structures

open access: yesInternational Journal of Applied Mechanics and Engineering, 2015
The main purpose of this work is to verify the influence of the weighting procedure in the Least Squares Method on the probabilistic moments resulting from the stability analysis of steel skeletal structures.
M. Kamiński, J. Szafran
doaj   +1 more source

Tough and Skin‐Free Porous Polyelectrolyte Complex Hydrogels via Salt‐Induced Aqueous Phase Separation

open access: yesAdvanced Functional Materials, EarlyView.
Controlling counterion exchange rate during aqueous phase separation enables the formation of skin‐free, homogeneously porous polyelectrolyte complex hydrogels by suppressing kinetically trapped skin layers and macrovoids. The resulting hydrogel networks exhibit exceptional toughness (∼15 MJ·m−3) and enable 3D (bio)printing and post‐functionalization ...
Adrivit Mukherjee   +7 more
wiley   +1 more source

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