The low-velocity impact and post-impact properties of ultra-high-molecular-weight polyethylene fiber weft plain knitted structural composites. (April 2019)

• Record Type: Journal Article
• Authors: Li, Cuiyu; Zhang, Rui; Jia, Jingyan; Wang, Gaopan; Shi, Yameng
• Is Part Of: Journal of engineered fibers and fabrics. Volume 14(2019)
• Publication Date: 2019-04
• Subjects: Impact damage -- ultra-high-molecular-weight polyethylene fiber -- knitted fabric -- compression after impact -- water immersion ultrasonic C scan; Nonwoven fabrics -- Periodicals; Fibers -- Periodicals; Fibers; Nonwoven fabrics; Periodicals; 677.6
• DOI: 10.1177/1558925019832524
• Languages: English
• ISSNs: 1558-9250

Abstract

This study investigated the impact and post-impact behavior of different layer weft plain knitted composite materials based on modified ultra-high-molecular-weight polyethylene/epoxy composites. The modified ultra-high-molecular-weight polyethylene weft plain knitted composites with 8, 12, 16 layers were prepared by vacuum-assisted resin transfer molding process and then subjected to impact and post-impact compression test. The impact properties were analyzed using the contact force–deflection and energy–time curves, and the post-impact compression was analyzed using the compression strength–strain curves. It can be obtained that the maximum contact force, absorbed energy, and residual compression strength after impact of the 16-layer specimen are 81.40%, 74.18%, and 73.25% more than those in the 8-layer specimen. respectively. According to the ultrasonic C-scan tests for the impact samples, the 16-layer specimen had the least damage area after the impact test, and the 8-layer composites damage area was 117.45% more than the 16-layer specimen.