Delamination Growth under Mixed Mode I - Mode II Fatigue Loading in Polymer Composite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F18%3AN0000040" target="_blank" >RIV/00010669:_____/18:N0000040 - isvavai.cz</a>

Výsledek na webu

<a href="http://experimentalni-mechanika.cz/konference/konference/2018/file/1457-delamination-growth-under-mixed-mode-i-mode-ii-fatigue-loading-in-polymer-composite.html" target="_blank" >http://experimentalni-mechanika.cz/konference/konference/2018/file/1457-delamination-growth-under-mixed-mode-i-mode-ii-fatigue-loading-in-polymer-composite.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Delamination Growth under Mixed Mode I - Mode II Fatigue Loading in Polymer Composite

Popis výsledku v původním jazyce

The characterization of material parameters on mixed mode bending (MMB) specimens was needed for modelling of crack growth in the composite air inlet of new L-39 NG jet trainer. The paper describes methods and results of the delamination growth in a carbon fibre-reinforced polymer composite under mixed mode I (opening) – mode II (shear) quasi-static and fatigue loading. This article summarizes the results of 15 quasi-static and 3 fatigue specimens tested in 3 different mode mixtures – 25%, 50% and 80%. The fracture toughness was increasing with the increasing mode mixture. The scatter of values was increasing with the mode II preference. The curves of crack growth rate vs. strain energy release rate were obtained and fitted by a regression model considering the mode mixtures. The dependence of crack growth law parameters according to Paris equation on the mode mixtures was non-linear. Thus, unique material characteristics needed for modelling were obtained.

Název v anglickém jazyce

Delamination Growth under Mixed Mode I - Mode II Fatigue Loading in Polymer Composite

Popis výsledku anglicky

The characterization of material parameters on mixed mode bending (MMB) specimens was needed for modelling of crack growth in the composite air inlet of new L-39 NG jet trainer. The paper describes methods and results of the delamination growth in a carbon fibre-reinforced polymer composite under mixed mode I (opening) – mode II (shear) quasi-static and fatigue loading. This article summarizes the results of 15 quasi-static and 3 fatigue specimens tested in 3 different mode mixtures – 25%, 50% and 80%. The fracture toughness was increasing with the increasing mode mixture. The scatter of values was increasing with the mode II preference. The curves of crack growth rate vs. strain energy release rate were obtained and fitted by a regression model considering the mode mixtures. The dependence of crack growth law parameters according to Paris equation on the mode mixtures was non-linear. Thus, unique material characteristics needed for modelling were obtained.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/TE02000032" target="_blank" >TE02000032: Výzkumné centrum pokročilých leteckých konstrukcí</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Experimental Stress Analysis - 56th International Scientific Conference, EAN 2018 - Conference Proceedings

ISBN

978-80-270-4062-9

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

168-175

Název nakladatele

Czech Society for Mechanics

Místo vydání

Liberec

Místo konání akce

Harrachov

Datum konání akce

5. 6. 2018

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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