Abstract High-Density Polyethylene (HDPE) is a common polymer with many applications in different industries such as piping, bioimplants, and automotive industry. Creep and fatigue behaviors of HDPE under different temperatures, loading conditions, and manufacturing techniques were investigated in this study. Effects of mean stress, frequency, and thickness on fatigue life were also included in the experimental plan. A general fatigue model was used to account for mean stress, temperature, and frequency effects on fatigue life of HDPE. In addition, cyclic tests with hold time stress were conducted to study creep-fatigue interaction behavior at room and elevated temperatures. The experimental results and the analytical models used to account for the aforementioned effects are presented and discussed.

中文翻译：

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高密度聚乙烯 (HDPE) 的蠕变和疲劳行为：温度、平均应力、频率和加工技术的影响

摘要 高密度聚乙烯 (HDPE) 是一种常见的聚合物，在管道、生物植入物和汽车工业等不同行业中有许多应用。本研究研究了 HDPE 在不同温度、载荷条件和制造技术下的蠕变和疲劳行为。实验计划中还包括平均应力、频率和厚度对疲劳寿命的影响。使用通用疲劳模型来说明平均应力、温度和频率对 HDPE 疲劳寿命的影响。此外，还进行了具有保持时间应力的循环测试，以研究室温和高温下的蠕变-疲劳相互作用行为。介绍和讨论了用于解释上述影响的实验结果和分析模型。