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The influence of vertex singularities on fatigue crack shape

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00319030" target="_blank" >RIV/68081723:_____/08:00319030 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216305:26210/08:PU79801

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    The influence of vertex singularities on fatigue crack shape

  • Original language description

    Due to the existence of vertex singularity at the point where the crack intersects the free surface, stress distribution around the crack tip and the type of the singularity is changed. In the interior of the specimen the classical singular behaviour ofthe crack is dominant and can be described using generally known analytic equations. Contrary to this, at the free surface or in the boundary layer close to the free surface the vertex singularity is significant. The influence of vertex singularity on crack behaviour and crack shape for a three-dimensional structure is described in this paper. To estimate the influence of the free surface on fatigue crack growth rate the model of a general singular stress concentrator was applied. The estimated fatiguecrack shape can help to provide a more reliable estimation of the fatigue life of the structures considered.

  • Czech name

    Vliv rohové singularity na tvar únavové trhliny

  • Czech description

    Diky existenci rohové singularity v místě, kde se protíná čelo trhliny s volným povrchem, rozdělení napětí a typ singularity se mění. Tato změna se dá postihnout pomocí zobecněné lomové mechaniky a popsat tak změny rychlosti šíření únavové trhliny pomocízobecněného faktoru intenzity napětí. Pomocí tohoto konceptu lze odhadnout i výsledný tvar únavové trhliny. Tato metodologie poskytuje nástroj k zpřesnění odhadu únavové životnosti pro složité trojdimensionální objekty.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JL - Fatigue and fracture mechanics

  • OECD FORD branch

Result continuities

  • Project

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

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    Proceedings of 17th European Conference on Fracture

  • ISBN

    978-80-214-3692-3

  • ISSN

  • e-ISSN

  • Number of pages

    7

  • Pages from-to

  • Publisher name

    VUTIUM Brno

  • Place of publication

    Brno

  • Event location

    Brno

  • Event date

    Sep 2, 2008

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article