TARA: Fatigue and Post-Fatigue tensile behaviour of Non-Crimp stitched and unstitched Carbon/Epoxy composites

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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/63139

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Title:	Fatigue and Post-Fatigue tensile behaviour of Non-Crimp stitched and unstitched Carbon/Epoxy composites
Keywords:	(A) Laminate (B) Fatigue Mechanical Properties
Issue Date:	21-Oct-2010
Publisher:	Elsevier
Abstract:	Abstract An experimental study is described in this paper dealing with the tensile-tensile fatigue and the quasi-static post-fatigue tensile behavior of a structurally stitched multi-ply carbon composite and the unstitched counterpart. The influence of the stitching on the fatigue life and on the residual post-fatigue quasi-static properties in two principal direction is investigated. The fatigue behavior of both composites is represented by Wöhler-like diagrams. The damage imparted during fatigue is studied by X-ray analyses. The residual mechanical properties of the fatigued composites after different number of cycles are compared in term of stiffness and strength. The post-fatigue quasi-static tensile tests include acoustic emission (AE) registration and full-field surface strain mapping (SM) to investigate the damage onset and development. The main conclusions of the experimental work are: the fatigue life is improved in the direction of the structural stitching and is reduced in the orthogonal direction; for the considered cyclic stress level the post-fatigue reduction of the mechanical properties is limited by the structural stitching.
URI:	http://hdl.handle.net/2262/63139
ISSN:	02663538 (ISSN)
DOI:	10.1016/j.compscitech.2010.09.004
Rights:	2010
Affiliation:	Department of Structural Engineering - Politecnico di Milano--> , Piazza Leonardo da Vinci 32--> , 20133 Milano (Italy)--> - (Carvelli, Valter) ITALY (Carvelli, Valter) Department of Structural Engineering - Politecnico di Milano--> , Piazza Leonardo da Vinci 32--> , 20133 Milano (Italy)--> - (Tomaselli, Vanni Neri) Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven - Kasteelpark Arenberg--> , 44--> , B-3001--> , Leuven--> - BELGIUM (Lomov, Stepan V.) Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven - Kasteelpark Arenberg--> , 44--> , B-3001--> , Leuven--> - BELGIUM (Verpoest, Ignaas) IFB – Institut für Flugzeugbau, Universität Stuttgart - GERMANY (Witzel, Volker) EADS Innovation Works--> , Munich--> - GERMANY (Van den Broucke, Bjorn)
Appears in Collections:	PEER Publications

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