Crack path prediction in layered ceramics designed with residual stresses.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU100208" target="_blank" >RIV/00216305:26210/12:PU100208 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Crack path prediction in layered ceramics designed with residual stresses.

Popis výsledku v původním jazyce

In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers withdifferent properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics

Název v anglickém jazyce

Crack path prediction in layered ceramics designed with residual stresses.

Popis výsledku anglicky

In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers withdifferent properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F09%2F1821" target="_blank" >GA101/09/1821: Mechanické a lomové vlastnosti multilamelárních struktur typu keramika/keramika a keramika/kov s gradientními vrstvami</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 4th International Conference on CRACK PATHS (CP 2012)

ISBN

9788895940441

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

87-98

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Parma

Datum konání akce

19. 9. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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