Characterization of fibre/matrix interfaces in carbon/carbon composites

Rollin, Magali; Jouannigot, Stéphane; Lamon, Jacques; Pailler, R.

doi:10.1016/j.compscitech.2008.09.023

Cited by 48 publications

(19 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They use standard composite materials and include the fiber push-out test [7][8][9][10][11][12][13], the slice compression test [14], and the fiber push-in test [15,6,[16][17][18]. The application of the slice compression test to polymer-matrix composites is not obvious while the push-out needs a cumbersome preparation of a very thin membrane (R±50 urn), leading to the fiber push-in test as the best alternative.…”

Section: Introductionmentioning

confidence: 99%

A methodology to measure the interface shear strength by means of the fiber push-in test

Rodríguez

Molina-Aldareguía

González

et al. 2012

Composites Science and Technology

122

104

View full text Add to dashboard Cite

A methodology is presented to measure the fiber/matrix interface shear strength in composites. The strategy is based on performing a fiber push-in test at the central fiber of highly-packed fiber clusters with hexagonal symmetry which are often found in unidirectional composites with a high volume fraction of fibers. The mechanics of this test was analyzed in detail by means of three-dimensional finite element simulations. In particular, the influence of different parameters (interface shear strength, toughness and friction as well as fiber longitudinal elastic modulus and curing stresses) on the critical load at the onset of debonding was established. From the results of the numerical simulations, a simple relationship between the critical load and the interface shear strength is proposed. The methodology was validated in an unidirectional C/epoxy composite and the advantages and limitations of the proposed methodology are indicated.

show abstract

Section: Introductionmentioning

confidence: 99%

A methodology to measure the interface shear strength by means of the fiber push-in test

Rodríguez

Molina-Aldareguía

González

et al. 2012

Composites Science and Technology

122

104

View full text Add to dashboard Cite

show abstract

“…Strong fiber matrix bonding also supports increase of fracture strength. 2-D C-C strong fiber architecture and good F/m bonding is responsible for its highest TS 5 . It was estimated that tensile strength of 2-D and NP C-C were 88 per cent and 82 per cent higher than graphite.…”

Section: Results and Discussion 41 Density And Porositymentioning

confidence: 99%

“…re-impregnation cycles are carried out to fill porosity in the material and to obtain a strongly bonded fiber matrix (F/m) interface. because debonding at F/m interface can provide a mechanism of energy absorption during mechanical deformation 5 . Graphitisation at 2500 ºC is then accomplished to restructure and graphitise the matrix.…”

Section: Development and Evaluation Of Carbon-carbon Threadedmentioning

confidence: 99%

Development and Evaluation of Carbon-Carbon Threaded Fasteners for High Temperature Applications

Kushwaha

Sinnur

2012

DSJ

View full text Add to dashboard Cite

Carbon-Carbon (C-C) threaded fasteners have been developed for joining C-C composites experiencing temperature above 1500 °C. The fasteners were fabricated from spun yarn graphitized carbon fabric through resin route and from needle punched carbon felt through pitch route techniques. The preforms were processed with multiple cycles of impregnation, carbonisation, and graphitisation up to densities of 1.78 gcm -3 and 1.90 gcm -3. Densification process cycles were repeated to obtain composites with reduced porosity and improved thermo-mechanical properties. Material evaluation of C-C fasteners is discussed and compared with existing graphite fasteners used in industrial and aerospace sectors. Scanning electron microscopy was also carried out to study microstructure of fractured specimens.

show abstract

“…The target fibre is selected under the instrument microscope and the sample moved to the indenter position such that the indenter contacts concentrically on the selected fibre. Jouannigot et al [46] have used this technique to mechanically characterise the fibre/matrix interface of carbon/carbon composites. …”

Section: Fibre Push-outmentioning

confidence: 99%