Near-threshold Fatigue Crack Propagation under Mixed-mode II+III in ARMCO Iron

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU101118" target="_blank" >RIV/00216305:26210/12:PU101118 - 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

Near-threshold Fatigue Crack Propagation under Mixed-mode II+III in ARMCO Iron

Popis výsledku v původním jazyce

The paper is dedicated to experiments on near-threshold fatigue cracks under mixed-mode II+III in the ARMCO iron. The aim is to find the intrinsic (effective) threshold value of stress intensity factor (SIF) range in the mixed mode II+III and to compareit to those in modes II, III as well as to elucidate the crack growth mechanism. In this paper we only focus on the mixed-mode II+III experiment. Cylindrical bars with circumferential cracked notch were loaded by shear force. The notch is located in themiddle of the bar and, therefore, no bending moment is present. Pre-cracks were created by compressive cyclic loading in mode I to obtain smooth fracture surfaces. After the experiment, the specimens were fractured under very low temperature or by cyclictensile loading. The circumferential crack was loaded by different combination of modes II and III. The SIFs in mode II and III were numerically calculated using FEM. Two simple formulae were used to evaluate the effective mixed-mode SIF

Název v anglickém jazyce

Near-threshold Fatigue Crack Propagation under Mixed-mode II+III in ARMCO Iron

Popis výsledku anglicky

The paper is dedicated to experiments on near-threshold fatigue cracks under mixed-mode II+III in the ARMCO iron. The aim is to find the intrinsic (effective) threshold value of stress intensity factor (SIF) range in the mixed mode II+III and to compareit to those in modes II, III as well as to elucidate the crack growth mechanism. In this paper we only focus on the mixed-mode II+III experiment. Cylindrical bars with circumferential cracked notch were loaded by shear force. The notch is located in themiddle of the bar and, therefore, no bending moment is present. Pre-cracks were created by compressive cyclic loading in mode I to obtain smooth fracture surfaces. After the experiment, the specimens were fractured under very low temperature or by cyclictensile loading. The circumferential crack was loaded by different combination of modes II and III. The SIFs in mode II and III were numerically calculated using FEM. Two simple formulae were used to evaluate the effective mixed-mode SIF

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/GAP108%2F10%2F0698" target="_blank" >GAP108/10/0698: Nové přístupy k výzkumu únavového šíření trhliny v módech II, III a II+III</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

19th European Conference on Fracture

ISBN

978-5-905576-18-8

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

188-193

Název nakladatele

Neuveden

Místo vydání

Kazan

Místo konání akce

Kazaň

Datum konání akce

26. 8. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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