Results 81 to 90 of about 2,822,738 (195)

Failure mechanisms and surface roughness statistics of fractured Fontainebleau sandstone [PDF]

open access: yes, 2007
In an effort to investigate the link between failure mechanisms and the geometry of fractures of compacted grains materials, a detailed statistical analysis of the surfaces of fractured Fontainebleau sandstones has been achieved. The roughness of samples
B. K. Chakrabarti   +11 more
core   +3 more sources

Nanoscale damage during fracture in silica glass [PDF]

open access: yes, 2006
We report here atomic force microscopy experiments designed to uncover the nature of failure mechanisms occuring within the process zone at the tip of a crack propagating into a silica glass specimen under stress corrosion.
Bonamy, Daniel   +7 more
core   +2 more sources

Micromechanics of rock damage: Advances in the quasi-brittle field

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
Constitutive models play an essential role in numerical modeling and simulation of nonlinear deformation, progressive damage and failure of rock-like materials and structures.
Qizhi Zhu, Jianfu Shao
doaj   +1 more source

Application of local and non-local approaches to multiple fatigue crack initiation and propagation [PDF]

open access: yes, 2003
Fatigue strength conditions presented in terms of normalized equivalent stress functionals defined on loading processes are used to unite the stages of material damage with fatigue crack initiation and multiple crack propagation under arbitrary loading ...
Mikhailov, SE, Namestnikova, IV
core  

Coupled Non-Ordinary State-Based Peridynamics Model for Ductile and Brittle Solids Subjected to Thermal Shocks

open access: yesApplied Sciences
A coupled thermomechanical non-ordinary state-based peridynamics (NOSB-PD) model is developed to simulate the dynamic response arising from temperature and to predict the crack propagation with thermal shocks in brittle and ductile solids.
Hui Li   +5 more
doaj   +1 more source

Comparison of structural health assessment capabilities in epoxy – carbon black and epoxy – carbon nanotube nanocomposites

open access: yeseXPRESS Polymer Letters, 2014
A novel method for comparing structural health of different types of brittle epoxy nanocomposites filled with carbon nanostructured fillers is presented.
F. Inam, B. R. Bhat, N. Luhyna, T. Vo
doaj   +1 more source

The Interpretation of Experimental Observation Data for the Development of Mechanisms based Creep Damage Constitutive Equations for High Chromium Steel [PDF]

open access: yes, 2015
It is very important to design a safe factor or estimating the remain lifetime for electric power plant components of steam pipes which mostly manufacture by high chromium steels and work at high temperature and low stress level.
Lu, Zhongyu, Xu, Qiang, Yang, Xin
core   +1 more source

A finite element strategy coupling a gradient-enhanced damage model and cohesive cracks for quasi-brittle materials [PDF]

open access: yes, 2013
A new combined strategy to describe failure of quasi-brittle materials is presented thus allowing the complete description of the process, from initiation of damage to crack propagation.
Rodríguez Ferran, Antonio   +1 more
core  

Scaling of Fracture Strength in Disordered Quasi-Brittle Materials

open access: yes, 2004
This paper presents two main results. The first result indicates that in materials with broadly distributed microscopic heterogeneities, the fracture strength distribution corresponding to the peak load of the material response does not follow the ...
Nukala, Phani Kumar V. V.   +1 more
core   +1 more source

Micro/nanofabrication of brittle hydrogels using 3D printed soft ultrafine fiber molds for damage-free demolding

open access: yesBiofabrication, 2019
Hydrogels are very popular in biomedical areas for their extraordinary biocompatibility. However, most bio-hydrogels are too brittle to perform micro/nanofabrication. An effective method is cast molding; yet during this process, many defects occur as the
S. Lv   +8 more
semanticscholar   +1 more source

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