X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

Seltzer, R. and González Martínez, Carlos Daniel and Muñoz, R. and Llorca Martinez, Francisco Javier and Blanco-Varela, T. (2013). X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact. "Composites Part A: Applied Science and Manufacturing", v. 45 ; pp. 49-60. ISSN 1359-835X. https://doi.org/10.1016/j.compositesa.2012.09.017.

Description

Title: X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact
Author/s:
  • Seltzer, R.
  • González Martínez, Carlos Daniel
  • Muñoz, R.
  • Llorca Martinez, Francisco Javier
  • Blanco-Varela, T.
Item Type: Article
Título de Revista/Publicación: Composites Part A: Applied Science and Manufacturing
Date: February 2013
ISSN: 1359-835X
Volume: 45
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

3D woven composites reinforced with either S2 glass, carbon or a hybrid combination of both and containing either polyethylene or carbon z-yarns were tested under low-velocity impact. Different impact energies (in the range of 21–316 J) were used and the mechanical response (in terms of the impact strength and energy dissipated) was compared with that measured in high-performance, albeit standard, 2D laminates. It was found that the impact strength in both 2D and 3D materials was mainly dependent on the in-plane fiber fracture. Conversely, the energy absorption capability was primarily influenced by the presence of z-yarns, having the 3D composites dissipated over twice the energy than the 2D laminates, irrespective of their individual characteristics (fiber type, compaction degree, porosity, etc.). X-ray microtomography revealed that this improvement was due to the z-yarns, which delayed delamination and maintained the structural integrity of the laminate, promoting energy dissipation by tow splitting, intensive fiber breakage under the tup and formation of a plug by out-of-plane shear.

More information

Item ID: 29479
DC Identifier: http://oa.upm.es/29479/
OAI Identifier: oai:oa.upm.es:29479
DOI: 10.1016/j.compositesa.2012.09.017
Official URL: http://www.sciencedirect.com/science/article/pii/S1359835X12003089
Deposited by: Memoria Investigacion
Deposited on: 25 Jun 2014 10:55
Last Modified: 01 Mar 2015 23:56
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