Behaviour of a crack in a corner or at a tip of a polygon-like particle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00465825" target="_blank" >RIV/68081723:_____/16:00465825 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/16:PU120852

Result on the web

<a href="http://dx.doi.org/10.1016/j.prostr.2016.06.240" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2016.06.240</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2016.06.240" target="_blank" >10.1016/j.prostr.2016.06.240</a>

Result language

angličtina

Original language name

Behaviour of a crack in a corner or at a tip of a polygon-like particle

Original language description

Crack propagation in particle composite materials depends on the properties of a matrix and a particle. A changing combination of the materials of a matrix and a particle together with various shape of the particle can result either in an increase or decrease of global fracture properties of the composite. A crack propagating through a particle composite can be found in the following positions: (i) a crack with its tip in the matrix and approaching the particle, (ii) a crack with its tip at the matrix/particle interface, (iii) a crack passing through the particle (iv) a crack lying in the matrix/particle interface, (v) a crack with its tip in a corner or at a tip of a polygon-like particle. The stress state in the second and the last cases differs from the stress field of a crack in a homogeneous material. The last case can be simulated by means of a bi-material notch model. The model can be used for evaluation of toughening mechanisms of silicate based composites with various shapes of aggregates. The stress singularity exponents of the bi-material models are determined and analyzed for typical materials combinations and typical shapes of aggregates. As silicate based composites exhibit quasi-brittle behaviour, the stress field should be described in a larger area ahead of a crack tip. For this reason, the exponents of non-singular stress terms are analysed as well. Stress distribution in the vicinity of a crack tip is analysed and conditions for further crack propagation are estimated.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

21st European Conference on Fracture

ISBN

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ISSN

2452-3216

e-ISSN

—

Number of pages

8

Pages from-to

1912-1919

Publisher name

Elsevier

Place of publication

Amsterdam

Event location

Catania

Event date

Jun 20, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000387976801120