Investigation of Specimen Size Effects on P-Quantile Diagrams and Normal Distributions of Critical Flaw Strengths in Fiber Tows

Author:

Lamon Jacques,R’Mili Mohamed

Abstract

The present paper proposes a model of the specimen size effect on the critical flaw strength distribution in fiber tows for composite reinforcement. The model is based on the basic assumption of brittle fracture that the failure probability at a given strength increases with specimen size in the p-quantile vs. strength relation and on the normal distribution. Empirical results derived from force–strain curves determined on tows made of 1000 and 500 Nicalon SiC filaments and with various gauge lengths show some discrepancy with predictions using the model. The empirical p-quantile diagrams and cumulative distributions of critical flaw strengths exhibited excellent reproducibility at longer gauge lengths, which suggests the absence of a size effect above a critical tow size. The reproducibility of flaw strength distributions at gauge lengths above 60 mm and the higher strengths obtained at lower gauge lengths despite structural effects were related to the features of the critical flaw distribution in tows of parallel fibers.

Publisher

MDPI AG

Subject

Engineering (miscellaneous),Ceramics and Composites

Reference63 articles.

1. Handbook of Properties of Textile and Technical Fibers,2018

2. Brittle Fracture and Damage of Brittle Materials and Composites Statistical-Probabilistic Approaches;Lamon,2017

3. Failure of fiber bundles

4. Damage and failure of SiC fiber tows during environment activated slow crack growth: Residual behavior and Strength-Probability-Time diagrams

5. Investigation of flaw strength distributions from tensile force-strain curves of fiber tows

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