ABSTRACT

In this paper, 400 flax fibers with 10 different lengths (40 fibers at each length) are experimentally characterized (quasi-static tensile behavior) and then the results are statistically analyzed. The quasi-static tensile test results appeared to have a large dispersion, which makes it possible to measure the degree of variability in the ultimate tensile strength (UTS), failure strain, and the Young’s modulus of the fiber, at different gage lengths (10 mm to 500 mm). The variation in mechanical properties at each fiber length is established using two and three Weibull statistics based on maximum likelihood estimation (ML) and least square estimation (LS). Finally, all 10 groups for each tensile property are analyzed by one-way (ANOVA).

摘要

在本文中，对 10 种不同长度的 400 根亚麻纤维（每个长度 40 根纤维）进行了实验表征（准静态拉伸行为），然后对结果进行了统计分析。准静态拉伸试验结果似乎有很大的分散性，这使得可以测量不同标距长度（10毫米至 500 毫米）。使用基于最大似然估计 (ML) 和最小二乘估计 (LS) 的两个和三个 Weibull 统计量来确定每个纤维长度的机械性能变化。最后，通过单向（ANOVA）分析每种拉伸性能的所有 10 组。