温度和纤维增强对玻璃-聚酰胺6复合材料管动态粉碎性能的影响

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access Pub Date : 2025-06-02 DOI:10.1016/j.jcomc.2025.100610

Holger Böhm , Jonas Richter , Jinbong Kim , Mungyu Jeong , Andreas Hornig , Maik Gude

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引用次数: 0

摘要

在- 40°C、23°C和80°C三种不同的温度设置下，实验研究了由玻璃-聚酰胺6复合材料制成的管状试样在垫层或连续双向纤维增强下的动态轴向破碎响应。动态碾压性能的评估和评价是基于测量的全局力-位移响应，典型耐撞标准的应用以及对现有损伤和失效现象的详细检查，这些现象负责能量吸收。在23°C和- 40°C的温度下，所有试样都表现出稳定的渐进式破碎过程，并出现明显的伸展破坏。与连续双向纤维增强的试样相比，毡状纤维增强的试样表现出更稳定和有效的破碎行为。在80°C的温度下，这种行为发生了变化，连续双向增强的试样表现出更高的破碎效率，而带有垫纤维增强的试样则表现出非常不稳定的破碎过程，导致局部压缩扭结失效，破碎效率降低22%。

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Effect of temperature and fibre reinforcement on dynamic crush performance of glass-polyamide 6 composite tubes

In this study, the dynamic axial crushing response of tubular specimens made of glass-polyamide 6 composite material, with either mat or continuous bidirectional fibre reinforcement is experimentally investigated under three different temperature settings: −40 °

C

, 23 °

C

and 80 °

C

. The assessment and evaluation of the dynamic crush performance are based on the measured global force–displacement response, application of typical crashworthiness criteria and a detailed examination of the existing damage and failure phenomena, which are responsible for energy absorption. At temperatures of 23 °

C

and −40 °

C

, all specimens showed a stable progressive crushing process by a pronounced splaying failure. Specimens with mat fibre reinforcement show a more stable and efficient crushing behaviour than specimens with continuous bidirectional fibre reinforcement. This behaviour changes for a temperature of 80 °

C

where the continuous bidirectional reinforced specimens exhibit a higher crush efficiency, while specimens with mat fibre reinforcement show a very unstable crushing process, leading to local compressive kinking failure and a 22% decrease in crush efficiency.

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来源期刊

Composites Part C Open Access Engineering-Mechanical Engineering

CiteScore

8.60

自引率

2.40%

发文量

审稿时长

55 days