Purpose

This study aimed to determine the peak impact force and force attenuation capacity of weft-knitted spacer fabrics intended for padding that can be used for human body protection against impact.

Design/methodology/approach

A total of five weft-knitted spacer fabrics were fabricated with four different diameters of nylon monofilament yarns and one doubled monofilament yarns, respectively. The impact performances of the weft-knitted spacer fabrics were tested using a drop test method with a customized test rig to simulate falling. Impact tests were conducted on single- and multilayered experimental spacer fabrics to investigate the peak impact force and force attenuation capacity.

Findings

It was found that weft-knitted spacer fabric with a coarser or larger diameter of monofilament spacer yarn generated lower impact force and higher force attenuation capacity, thus resulting in better impact performance. Greater force attenuation can be achieved by utilizing a higher number of spacer fabric layers. However, the increase in thickness must be considered with the spacer fabric end use.

Originality/value

This study employed relatively coarse nylon monofilament yarn as spacer yarns to gain knowledge on the impact performance of weft-knitted spacer fabrics compared to warp-knitted spacer fabrics which are more common. The results showed that the diameter of spacer yarn significantly influenced the impact performance of the experimental weft-knitted spacer fabrics. These results could be useful for designing and engineering textile-based impact protectors.

中文翻译：

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纬编间隔织物在低速冲击下的力衰减能力

目的

本研究旨在确定用于衬垫的纬编间隔织物的峰值冲击力和力衰减能力，可用于保护人体免受冲击。

设计/方法/方法

总共五种纬编间隔织物分别用四种不同直径的尼龙单丝纱线和一种双股单丝纱线制成。纬编间隔织物的冲击性能使用跌落试验方法和定制的试验台来模拟跌落。对单层和多层实验间隔织物进行了冲击测试，以研究峰值冲击力和力衰减能力。

发现

结果表明，单丝间隔纱直径较粗或较大的纬编间隔织物产生较低的冲击力和较高的力衰减能力，从而产生更好的冲击性能。通过使用更多数量的间隔织物层可以实现更大的力衰减。然而，厚度的增加必须考虑到间隔织物的最终用途。

原创性/价值

本研究采用相对较粗的尼龙单丝纱线作为间隔纱，以了解纬编间隔织物与更常见的经编间隔织物相比的冲击性能。结果表明，间隔纱的直径对试验用纬编间隔织物的冲击性能有显着影响。这些结果可用于设计和工程基于纺织品的冲击保护器。