True strength of ceramic fiber bundles : experiments and simulations

A study on the strength of ceramic fiber bundles based on experimental and computational procedures is presented. Tests were performed on single filaments and bundles composed of two fibers with different nominal fiber counts. A method based on fiber rupture signals was developed to estimate the amount of filament rupture during the test. Through this method, the fiber bundle true strength was determined and its variation with the initial fiber count observed. By using different load-sharing models and the single filament data as input parameter, simulations were also developed to verify this behavior. Through different approaches between experiments and simulations, it was noted that the fiber bundle true strength increased with the fiber count. Moreover, a variation of the fibers’ final proportion in the bundles relative to the initial amount was verified in both approaches. Finally, discussions on the influence of different load-sharing models on the results are presented.

Subjects

alumina fiber

fiber bundle

load sharing

tensile behavior

simulation

DDC Class

540: Chemie

More Funding Information

National Council for Scientific and Technological Development (CNPq, Brazil)

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

materials-14-00064.pdf

Size

7.13 MB

Format

Adobe PDF

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True strength of ceramic fiber bundles : experiments and simulations