Back to Search
Start Over
An analytical model for the translaminar fracture toughness of fibre composites with stochastic quasi-fractal fracture surfaces
- Source :
- Journal of the Mechanics and Physics of Solids. 66:78-102
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- The translaminar fracture toughness of fibre-reinforced composites is a size-dependent property which governs the damage tolerance and failure of these materials. This paper presents the development, implementation and validation of an original analytical model to predict the tensile translaminar (fibre-dominated) toughness of composite plies and bundles, as well as the associated size effect. The model considers, as energy dissipation mechanisms, debonding and pull-out of bundles from quasi-fractal fracture surfaces; the corresponding lengths are stochastic variables predicted by the model, based on the respective bundle strength distributions and fracture mechanics. Parametric studies show that composites are toughened by stronger fibres with large strength variability, and intermediate values of interfacial toughness and friction. Predictions are validated against four different composite ply systems tested in the literature, proving the model’s ability to capture not only size effects, but also the influence of different fibres and resins.
- Subjects :
- Technology
Toughness
Size effects
Materials science
PREDICTION
fibre-reinforced composite material
Materials Science
Composite number
Materials Science, Multidisciplinary
CERAMIC-MATRIX COMPOSITES
Mechanics
09 Engineering
ENERGY
BUNDLES PROBABILITY MODEL
Fracture toughness
STRENGTH
Ultimate tensile strength
Mechanical Engineering & Transports
PULL-OUT
Composite material
01 Mathematical Sciences
FIBROUS COMPOSITES
Science & Technology
02 Physical Sciences
Physics
Mechanical Engineering
WEIBULL FIBERS
Fracture mechanics
Condensed Matter Physics
Strengthening and mechanisms
STATISTICS
Probability and statistics
Translaminar fracture toughness
MECHANICAL RESPONSE
Physics, Condensed Matter
Mechanics of Materials
Bundle
Physical Sciences
Fracture (geology)
Damage tolerance
Subjects
Details
- ISSN :
- 00225096
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Journal of the Mechanics and Physics of Solids
- Accession number :
- edsair.doi.dedup.....2d58318e0accb8c6a56bbe878525fcdb