Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 55, Issue -, Pages 53-62Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2013.08.006
Keywords
Sub-surface; Carbon fiber; Debonding; Interface
Funding
- EU [295202]
- Executive Research Agency of the European Union [272448]
- Comunidad Autonoma de Madrid (AVANSENS) [S2009/PPQ-1642]
- Ministerio de Economia y Competitividad [FIS2012-38866-C05-05]
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The role of water on the sub-surface degradation of unidirectional carbon fiber reinforced epoxy composite is examined. The correlation between the debonding of carbon fibers at the fiber-epoxy interface, and the wear behavior of the carbon fiber composite are discussed based on an in-depth analysis of the worn surfaces. We demonstrate that a reciprocating sliding performed along an anti-parallel direction to the fiber orientation under dry conditions results in a large degradation by debonding and breaking of the carbon fibers compared to sliding in parallel and perpendicular directions. Immersion in water has a harmful effect on the wear resistance of the carbon fiber composite. The competition between crack growth and the wear rate of epoxy matrix and/or carbon fibers in the sliding track determines the level of material loss of the composite in both test environments. (C) 2013 Elsevier Ltd. All rights reserved.
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