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Assessment of the post-impact damage propagation in a carbon-fibre composite under cyclic loading

SYSNO ASEP	0432603
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Assessment of the post-impact damage propagation in a carbon-fibre composite under cyclic loading
Author(s)	Kytýř, Daniel (UTAM-F)_{SAI, RID, ORCID} Fíla, T. (CZ) Šleichrt, J. (CZ) Doktor, Tomáš (UTAM-F)_{RID, SAI, ORCID} Šperl, Martin (UTAM-F)_{RID, SAI}
Number of authors	5
Source Title	Materiali in Tehnologije. - : Institut za Kovinske Materiale in Tehnologije - ISSN 1580-2949 Roč. 48, č. 5 (2014), s. 777-780
Number of pages	4 s.
Publication form	Print - P
Language	eng - English
Country	SI - Slovenia
Keywords	carbon-fibre composites ; post-impact damage ; laser profilometry
Subject RIV	JI - Composite Materials
R&D Projects	TA03010209 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
Institutional support	UTAM-F - RVO:68378297
UT WOS	000344718900027
EID SCOPUS	84908090496
Annotation	Carbon fibre in polyphenylene sulfide composites (C/PPS) became a popular material in the aircraft industry but its fragility and low impact resistance limits its application in primary aircraft structures. This study is focused on damage propagation in the laminated composites reinforced with carbon fibres. The damage may be inflicted during the ground maintenance, by an inflight bird strike or during a flight in severe meteorological conditions (heavy storms). The initial damage was created by a drop-weight out-of-plane impact using a spherical indenter. The response of the material was analysed by monitoring the impacted zones and their propagation history. The influenced area and specimen thickness in the centres of indents were chosen as the degradation parameters. The post-impact damage propagation induced by cyclic loading was assessed using a custom-designed computer-controlled laser-profilometery device. Both the upper and lower profiles of the specimen were scanned during the interruptions of the fatigue test. Global deformation was described with an analytically determined centroidal-axis curve. Local topography changes were obtained with a subtraction of this curve. Surface-deformation maps were created and used for a demonstration of the damage propagation in the specimen.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2015
Electronic address	http://mit.imt.si/Revija/izvodi/mit145/kytyr.pdf

Number of the records: 1