Mechanical behavior and failure micromechanisms of hybrid 3D woven composites in tension

Muñoz, R. and Martínez, V. and Sket, Federico and González Martínez, Carlos Daniel and Llorca Martinez, Francisco Javier (2014). Mechanical behavior and failure micromechanisms of hybrid 3D woven composites in tension. "Composites Part A: Applied Science and Manufacturing", v. 59 ; pp. 93-104. ISSN 1359-835X. https://doi.org/10.1016/j.compositesa.2014.01.003.

Description

Title: Mechanical behavior and failure micromechanisms of hybrid 3D woven composites in tension
Author/s:
  • Muñoz, R.
  • Martínez, V.
  • Sket, Federico
  • González Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Composites Part A: Applied Science and Manufacturing
Date: April 2014
ISSN: 1359-835X
Volume: 59
Subjects:
Freetext Keywords: A. Polymer–matrix composites; A. Hybrid; A. 3-Dimensional reinforcement; X-ray microtomography
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

The deformation and failure micromechanisms of a hybrid 3D woven composite were studied in tension. Plain and open-hole composite coupons were tested in tension until failure in the fill and warp directions, as well as fiber tows extracted from the dry fabric and impregnated with the matrix. The macroscopic evolution of damage in the composite coupons was assessed by means of periodic unloading–reloading (to obtain the elastic modulus and the residual strain), whereas the microscopic mechanism were established by means of X-ray computed microtomography. To this end, specimens were periodically removed from the mechanical testing machine and infiltrated with ZnI-containing liquid to assess the main damage modes as a function of the applied strain. The experimental observations and the predictions of an isostrain model were used to understand the key factors controlling the elastic modulus, strength and notch sensitivity of hybrid 3D woven composites in tension. It was found that the full contribution of the glass fibers to the composite strength was not employed, due to the premature fracture of the carbon fibers, but their presence increased the fracture strain and the energy dissipated during fracture. Thus, hybridization of the 3D woven composite led to a notch-insensitive behavior as demonstrated by open-hole tests

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2012-37552UnspecifiedUnspecifiedUnspecified
Madrid Regional GovernmentS2009/MAT-1585UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35462
DC Identifier: http://oa.upm.es/35462/
OAI Identifier: oai:oa.upm.es:35462
DOI: 10.1016/j.compositesa.2014.01.003
Official URL: http://www.sciencedirect.com/science/article/pii/S1359835X14000050
Deposited by: Memoria Investigacion
Deposited on: 02 Jun 2015 18:15
Last Modified: 16 May 2019 07:37
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