ABSTRACT

The effect of strain rate on the mechanical properties of two epoxy adhesives was investigated by conducting experiments on dumbbell-shaped specimens prepared from the adhesives. The tensile rate was changed stepwise from 5.2 × 10^–5 to 1.2 × 10⁶ mm/min, and the yield stress, Young’s modulus, elongation, and tensile strength were evaluated. The yield stress and tensile strength showed a clear dependence on the strain rate. The results from this study allowed us to propose a procedure for predicting the creep strength and high-rate impact strength from the results of a simple tensile test.

中文翻译：

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实验研究各种应变率对环氧树脂粘合剂机械性能的影响，以及蠕变和冲击强度的预测

摘要

通过对由粘合剂制备的哑铃形试样进行实验，研究了应变速率对两种环氧树脂粘合剂力学性能的影响。拉伸速率从5.2 × 10 ^-5逐步改变到1.2 × 10 ⁶ mm/min，并评估屈服应力、杨氏模量、伸长率和拉伸强度。屈服应力和抗拉强度显示出明显依赖于应变速率。这项研究的结果使我们能够提出一种程序，用于根据简单拉伸试验的结果来预测蠕变强度和高速冲击强度。