Evaluation of fatigue life of fiberglass reinforced polyester composite materials using Weibull analysis methods

Composites and Advanced Materials Pub Date : 2024-02-01 DOI:10.1177/26349833241239800

D. Djeghader, B. Redjel

引用次数: 0

Abstract

A composite material based on a polyester resin and fiberglass reinforcement was fabricated by the contact molding process with a fiber percentage of 40%. This material underwent a cyclic fatigue loading and 3-point bending at slow speed. The experimental results were used to plot the S–N curve based on a linear function, Hwang & Han’s relation and Basquin’s hypothesis. A probabilistic analysis based on the Weibull distribution with two and three parameters was used in order to adjust and predict the fatigue behavior of the material used in the study. This analysis made it possible to plot the fatigue curve for different levels of reliability (Ps = 99%, Ps = 90%, Ps = 50%, Ps = 36.8% and Ps = 10%), in order to identify first time to failure for material reliability and safety limits.

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用 Weibull 分析方法评估玻璃纤维增强聚酯复合材料的疲劳寿命

通过接触模塑工艺制造了一种基于聚酯树脂和玻璃纤维增强材料的复合材料，纤维比例为 40%。该材料在慢速条件下承受了循环疲劳载荷和三点弯曲。实验结果被用于绘制基于线性函数、Hwang & Han 关系和 Basquin 假设的 S-N 曲线。为了调整和预测研究中所用材料的疲劳行为，使用了基于两个和三个参数的威布尔分布的概率分析。通过该分析，可以绘制出不同可靠性水平（Ps = 99%、Ps = 90%、Ps = 50%、Ps = 36.8% 和 Ps = 10%）下的疲劳曲线，从而确定材料可靠性和安全限值的首次失效时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Composites and Advanced Materials

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