Statistical Analysis of the Ultimate Strength of Filaments, Tows and Minicomposites

The present paper investigates the failure of SiC and alumina-fiber-reinforced minicomposites in relation to strength distributions filaments, behavior reinforcing dry tows. data are measured on single-filament, dry-tow minicomposite specimens using tensile tests under commonly used test condition strain-controlled loading. Pertinence normal distribution strengths at different length scales is assessed construction p-quantile diagrams, pertinence Weibull was by comparing function. alumina exhibited significantly behaviors. Comparison with filament underlying tow loading (stress- or conditions) allows for interpretation results. sensitivity results conditions highlighted. Various scenarios discussed as alternatives stress concentration induced clusters broken fibers. It appears that stable dictated highest-strength whereas SiC-fiber-reinforced premature attributed microstructural imperfections overstressing fiber fiber/matrix interactions.