Low-velocity impact behavior of warp-knitted spacer fabric reinforced with spiderweb shaped stitch
JOURNAL OF INDUSTRIAL TEXTILES(2024)
Abstract
Warp-knitted spacer fabrics are a widely considerable material owing to its unique sandwich structure and superior performance, employed across diverse fields such as military, transportation, construction, and personal protection. However, they are inevitably subjected to impacts in practical applications. This work investigated the influence of surface layer structure on the impact resistance property of fabrics by drop weight tests. The damage tolerance of warp-knitted spacer fabrics was also studied through repeated impact experiments. To further improve the impact resistance property of the fabric, a simple sewing method was proposed in this work. Inspired by the spiderweb structure, a spiderweb shape was sewn on the fabric. The results demonstrated that hexagonal mesh as the impact surface provided better impact resistance for the fabric. As the number of impacts increases, the deformation of the fabric gradually intensifies, and the fabric is completely damaged during the fourth impact. The stitch can enhance its impact resistance, and the shape of the stitch had a significant influence on the impact resistance performance.
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Key words
Warp-knitted spacer fabric,low-velocity impact,stitch,spider web,energy absorption
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