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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Statistical analysis of threshold load for radial crack nucleation by Vickers indentation in commercial soda-lime silica glass
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Statistical analysis of threshold load for radial crack nucleation by Vickers indentation in commercial soda-lime silica glass

机译：商用钠钙硅玻璃维氏压痕径向裂纹形核阈值载荷的统计分析

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摘要

The threshold load for nucleation of primary radial cracks in commercial soda-lime silica glass was investigated at room temperature by using Vickers indentation. The Weibull statistics with three-parameters was employed to analyze the number of cracks nucleated around each indentation as function of the applied load. The used probability estimator was (n - 0.5)/N, where n is the total number of radial cracks nucleated at a specific load and N is the total number of possible cracks. The minimum applied load for radial crack nucleation that best fitted the experimental data was equal to 180 mN. Comparison between experimental data distribution and the binomial distribution was also performed. The results were interpreted according to the fracture mechanics models for sub-threshold indentation flaws of Lathabai et al. and for crack initiation in elastic/plastic indentation of Lawn and Marshall. (c) 2006 Elsevier B.V. All rights reserved.
机译：使用维氏压痕，在室温下研究了商用钠钙硅玻璃中主要的径向裂纹成核的阈值载荷。使用具有三参数的威布尔统计量来分析每个压痕周围成核的裂纹数量与所施加载荷的函数关系。使用的概率估计量为（n-0.5）/ N，其中n是在特定载荷下成核的径向裂纹的总数，N是可能裂纹的总数。最适合实验数据的径向裂纹成核的最小外加载荷等于180 mN。还进行了实验数据分布和二项式分布之间的比较。根据Lathabai等人的亚阈值压痕缺陷的断裂力学模型解释了结果。用于在Lawn和Marshall的弹性/塑性压痕中产生裂纹。 （c）2006 Elsevier B.V.保留所有权利。

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