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Damage sequence in thin-ply composite laminates under out-of-plane loading
University of Girona, Spain; Zagazig University, Egypt.
University of Girona, Spain.
University of Girona, Spain.
University of Girona, Spain.
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2016 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 87, p. 66-77Article in journal (Refereed) Published
Abstract [en]

The study of the damage sequence in polymer-based composite laminates during an impact event is a difficult issue. The problem can be more complex when the plies are thin. In this paper, quasi-static indentation tests were conducted on thin-ply laminates to understand qualitatively the damage mechanisms and their sequence during low-velocity impact loading. TeXtreme® plain weave plies were used with two different thicknesses, 0.08 mm and 0.16 mm (referenced as ultra-thin-ply and thin-ply, respectively), and tested under different load levels. Load-displacement curves were analyzed and the extent of damage was inspected using optical microscopy and ultrasonic technique. The results showed that the damage onset occurs earlier in thin-ply laminates. The damage onset in thin-ply laminates is matrix cracking which induces delaminations, whereas for ultra-thin-ply laminates is due to delaminations which are induced by shear forces and small amount of matrix cracking. Moreover, the fiber breakage appears earlier in ultra-thin-ply laminates.

Place, publisher, year, edition, pages
Elsevier Ltd , 2016. Vol. 87, p. 66-77
Keywords [en]
A. Polymer-matrix composites (PMCs), B. Impact behavior, C. Damage mechanics, D. Fractography, Cracks, Delamination, Fracture mechanics, Laminated composites, Paper laminates, Polymer matrix composites, Ultrasonic applications, Ultrasonic testing, Damage mechanics, Impact behavior, Load-displacement curve, Out-of-plane loading, Polymer based composite, Polymer Matrix Composites (PMCs), Quasi-static indentation tests, Ultrasonic techniques, Laminates, Composites, Damage, Ply Wood, Ultrasonic Frequencies
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41054DOI: 10.1016/j.compositesa.2016.04.010Scopus ID: 2-s2.0-84963646153OAI: oai:DiVA.org:ri-41054DiVA, id: diva2:1377029
Note

Funding details: Universitat de Girona; Funding details: Ministerio de Economía y Competitividad; Funding details: European Commission, MAT2015-69491-C3-1-R, MAT2013-46749-R, DPI2012-34465; Funding text 1: The first author would like to thank the Universitat de Girona for the pre-doctorate Grant IF-UDG. This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) and the European Union under contracts DPI2012-34465 , MAT2013-46749-R and MAT2015-69491-C3-1-R , and by the financial support of ERANet AirTN 01/2012 under the project entitled “Damage tolerance for thin ply textile composites (DAMTEX)”.

Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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