High Strain Rate Mechanical Behavior of Polyamide 66 and Polyamide 66-Glass Fiber Reinforced

IF 1.5 4区 材料科学 Q4 MATERIALS SCIENCE, COMPOSITES Mechanics of Composite Materials Pub Date : 2024-01-06 DOI:10.1007/s11029-023-10167-x
T. Gómez-del Río, A. Ruiz
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Abstract

The effect of glass fiber-reinforcement polymer Polyamide 66 on the uniaxial compressive mechanical response was measured over a wide strain-rate range from quasi-static tests with strain rate of 5×10–3 s–1 to impact tests with strain rate of 2×103 s–1. Dynamic compressive load was applied using a split Hopkinson pressure bar, whereas an electromechanical testing machine was used to carry out quasi-static experiments in displacement control to determine strain-rate sensitivity. The results demonstrate that strain rate significantly influences yield stress, post-yield behavior, and ductility of the two polymers under study. The yield stress experimental data are consistent with thermally activated processes.

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聚酰胺 66 和聚酰胺 66-玻璃纤维增强型的高应变速率机械特性
从应变速率为 5×10-3 s-1 的准静态试验到应变速率为 2×103 s-1 的冲击试验,在很宽的应变速率范围内测量了玻璃纤维增强聚合物聚酰胺 66 对单轴压缩机械响应的影响。使用分体式霍普金森压力棒施加动态压缩载荷,同时使用机电试验机在位移控制下进行准静态试验,以确定应变速率敏感性。结果表明,应变率对所研究的两种聚合物的屈服应力、屈服后行为和延展性有很大影响。屈服应力实验数据与热激活过程一致。
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来源期刊
Mechanics of Composite Materials
Mechanics of Composite Materials 工程技术-材料科学:复合
CiteScore
2.90
自引率
17.60%
发文量
73
审稿时长
12 months
期刊介绍: Mechanics of Composite Materials is a peer-reviewed international journal that encourages publication of original experimental and theoretical research on the mechanical properties of composite materials and their constituents including, but not limited to: damage, failure, fatigue, and long-term strength; methods of optimum design of materials and structures; prediction of long-term properties and aging problems; nondestructive testing; mechanical aspects of technology; mechanics of nanocomposites; mechanics of biocomposites; composites in aerospace and wind-power engineering; composites in civil engineering and infrastructure and other composites applications.
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