Carbon/epoxy composite delamination analysis by acoustic emission method under various environmental conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F16%3AN0000040" target="_blank" >RIV/00010669:_____/16:N0000040 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1350630716300085" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1350630716300085</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2016.01.008" target="_blank" >10.1016/j.engfailanal.2016.01.008</a>

Result language

angličtina

Original language name

Carbon/epoxy composite delamination analysis by acoustic emission method under various environmental conditions

Original language description

New multifunctional materials for aerospace industry with exceptional properties must be tested under various environmental conditions to find out possible scatter factors for evaluated properties. Delamination is a typical damage mode observed for laminated composites. Therefore, reliable information regarding the delamination growth behaviour is needed for all operational environments of an aircraft operated at cryogenic and elevated temperatures. In this paper, delamination crack growth monitoring in a climatic chamber on double-cantilever beam (DCB) specimens using optical devices and acoustic emission (AE) techniques is described. A relationship between cumulative AE energy, events localization, clusters, 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 multi-walled carbon nanotubes (MWCNT) 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 crack growth in material with more significant fibre breakage caused increase of the AE release rate.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JI - Composite materials

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Engineering Failure Analysis

ISSN

1350-6307

e-ISSN

—

Volume of the periodical

69

Issue of the periodical within the volume

November

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

88-96

UT code for WoS article

000384144700014

EID of the result in the Scopus database

2-s2.0-84956866354