Crack Growth Monitoring of CFRP Composites Loaded in Different Environmental Conditions Using Acoustic Emission Method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F15%3AN0000004" target="_blank" >RIV/00010669:_____/15:N0000004 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1877705815016847" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705815016847</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2015.08.045" target="_blank" >10.1016/j.proeng.2015.08.045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crack Growth Monitoring of CFRP Composites Loaded in Different Environmental Conditions Using Acoustic Emission Method

Popis výsledku v původním jazyce

New materials developed for aerospace structures continuously improve aircraft safety. New multifunctional nanostructured materials with exceptional properties must be tested and validated to exploit their full potential. Delamination is a typical damage mode for laminated composites. Therefore, reliable information regarding crack growth behaviour is needed for all operational environments of an aircraft operated at room temperature, as well as at cryogenic and elevated temperatures. In this paper, crack growth monitoring in a climatic chamber on double-cantilever beam (DCB) specimens using optical devices and acoustic emission (AE) techniques are described. A relationship between cumulative AE energy and crack growth in a plain-weave carbon fibre–reinforced epoxy is investigated under constant displacement rate loading at +80 °C and -55 °C. Test results are evaluated for specimens with nanofillers in the microstructure and for a reference material. The mechanical properties during delamination are represented by fracture toughness GIC, and they are also correlated with the AE data. The elevated test temperature caused a decreased rate of released AE energy. The results are affected by both temperature and material.

Název v anglickém jazyce

Crack Growth Monitoring of CFRP Composites Loaded in Different Environmental Conditions Using Acoustic Emission Method

Popis výsledku anglicky

New materials developed for aerospace structures continuously improve aircraft safety. New multifunctional nanostructured materials with exceptional properties must be tested and validated to exploit their full potential. Delamination is a typical damage mode for laminated composites. Therefore, reliable information regarding crack growth behaviour is needed for all operational environments of an aircraft operated at room temperature, as well as at cryogenic and elevated temperatures. In this paper, crack growth monitoring in a climatic chamber on double-cantilever beam (DCB) specimens using optical devices and acoustic emission (AE) techniques are described. A relationship between cumulative AE energy and crack growth in a plain-weave carbon fibre–reinforced epoxy is investigated under constant displacement rate loading at +80 °C and -55 °C. Test results are evaluated for specimens with nanofillers in the microstructure and for a reference material. The mechanical properties during delamination are represented by fracture toughness GIC, and they are also correlated with the AE data. The elevated test temperature caused a decreased rate of released AE energy. The results are affected by both temperature and material.

Druh

D - Stať ve sborníku

CEP obor

JI - Kompositní materiály

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Engineering

ISBN

—

ISSN

1877-7058

e-ISSN

—

Počet stran výsledku

8

Strana od-do

86-93

Název nakladatele

Elsevier Ltd.

Místo vydání

Neuveden

Místo konání akce

Funchal, Portugal

Datum konání akce

1. 9. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000380482400012