对PET复合材料假肢插座的强度评估
Yogeshvaran R Nagarajan1, Farukh Farukh1, Vadim V Silberschmidt2
1Institute of Engineering Sciences, School of Engineering and Sustainable Development, De Montfort University, The Gateway, Leicester LE1 9BH, UK.
Materials (Basel, Switzerland)
|July 14, 2023
概括
这项研究表明,聚乙烯四甲酸盐 (PET) 纤维复合材料是假肢插座的强大,低成本的替代品. 这些可持续材料的性能优于传统的选择,如聚烯和高密度聚乙烯.
科学领域:
- 生物材料工程 生物材料工程
- 材料科学 材料科学 材料科学
- 假肢和整形手术
背景情况:
- 假肢插座必须承受高负荷而不会发生故障.
- 传统的复合材料插座往往是昂贵的,在资源有限的地区是不可获得的.
- 开发负担得起和可持续的假肢材料对世界各地的截肢者至关重要.
研究的目的:
- 调查使用聚乙烯二甲 (PET) 纤维增强复合材料用于下肢假肢插座的可行性.
- 将PET复合材料的机械性能和承载能力与传统假肢材料进行比较.
主要方法:
- 使用真空辅助树脂转移成型 (VARTM) 制造的PET编织和PET针织复合材料.
- 用玻璃纤维增强 (GFRP) 层材,聚烯 (PP) 和高密度聚乙烯 (HDPE) 的准备样本进行比较.
- 通过ASTM标准评估机械性能,并在前脚负荷下测试插座性能 (ISO 10328).
主要成果:
- 与PP和HDPE相比,PET织物和PET针织复合材料表现出优越的机械性能.
- 所有制造的插座,包括以PET为基础的插座,都符合125公斤承载能力要求.
- 聚乙烯插座表现出比单质PP和HDPE插座更强的变形和刚性抵抗力.
结论:
- 基于PET的复合材料提供了一种可行的,低成本和可持续的替代传统单体插座材料.
- 聚乙烯复合材料可用于生产耐用且价格合理的下肢假肢.
- 这一进步具有显著的潜力,可以改善缺少服务的人群的假肢可访问性.
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