通过挤压一个缺口环或闭口环样品来评价不同管材的弹性模量和弯曲强度。在弹性范围内,弹性模量可由载荷—位移关系和样品尺寸获到;而弯曲强度则由断裂临界载荷决定。在本研究中,四种管材被分为两组来研究这两种方法的适用范围。结果表明:缺口环适合评价刚度较大、极限应变较小的材料,而闭口环则更倾向于评价低刚度的材料。此外,三点弯曲的数据也验证了这两种方法的有效性、便捷性及其各自的适用范围。 Elastic modulus and flexural strength of different tubes were evaluated by extruding a notched ring or a closed-loop sample. In the elastic range, the elastic modulus can be obtained by the load-displacement relationship and the sample size; and the bending strength is determined by the critical breaking load. In this study, four tubes were divided into two groups to study the applicability of the two methods. The results show that the notch ring is suitable for the evaluation of materials with higher stiffness and lower ultimate strain, while the closed-loop rings are more inclined to evaluate the low-stiffness material. In addition, the three-point bending data also validates the effectiveness and convenience of both methods and their respective applicability.