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

Seltzer, R.; González Martínez, Carlos Daniel; Muñoz, R.; Llorca Martinez, Francisco Javier y 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.

Descripción

Título: X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact
Autor/es:
  • Seltzer, R.
  • González Martínez, Carlos Daniel
  • Muñoz, R.
  • Llorca Martinez, Francisco Javier
  • Blanco-Varela, T.
Tipo de Documento: Artículo
Título de Revista/Publicación: Composites Part A: Applied Science and Manufacturing
Fecha: Febrero 2013
Volumen: 45
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 29479
Identificador DC: http://oa.upm.es/29479/
Identificador OAI: oai:oa.upm.es:29479
Identificador DOI: 10.1016/j.compositesa.2012.09.017
URL Oficial: http://www.sciencedirect.com/science/article/pii/S1359835X12003089
Depositado por: Memoria Investigacion
Depositado el: 25 Jun 2014 10:55
Ultima Modificación: 01 Mar 2015 23:56
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