Efficacy of various structural forms of disentangled polyethylene laminates against low velocity impact

Abstract

Filament-based unidirectional laminates of para-aramid and ultra-high molecular weight polyethylene exhibit excellent impact resistance performance. This research explored the possibility of using disentangled polyethylene (DPE) tape, instead of filaments, as an alternative impact resistant material. The effects of laminate structure, binding resin content and processing temperature on the tensile and impact properties of cross-ply laminates prepared from DPE tape was investigated. Three types of cross-ply laminates prepared from tape, woven fabric of untwisted tape and woven fabric of twisted tape were explored. Tensile properties and low velocity impact resistance of laminates were evaluated. Laminate made from woven untwisted tape showed much lower impact energy absorption than cross-ply laminate, while the woven twisted tape based laminate performed the worst. Cross-ply laminates made with low resin content showed better tensile and impact resistance performances. Cross-ply laminates prepared at higher moulding temperature showed significantly enhanced impact energy absorption than its counterpart prepared at a lower temperature. Therefore, cross-ply laminate of DPE tape with low resin content is ideal for impact resistance applications.

Orthotropic vs quasi-isotropic: How the tape orientation influence the performance of disentangled polyethylene laminates

“…The overall areal densities of DPE tape and LDPE, within a laminate, were 90 g·m −2 and 30 g·m −2 respectively.

Figure 1.Process for the preparation of laminates from tape. 21

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“…The hybrid panel showed higher impact resistance compared to cross-plied orientation in multi-layered panels. Bajya et al 21 studied the effect of various structures of DPE laminate at low velocity impact. The study showed that tape-basedcross-plylaminates at optimised temperature exhibited better impact performance compared to other structural forms such as woven twisted tape, untwisted tape, etc.…”

Fabric Impregnation with Shear Thickening Fluid for Ballistic Armor Polymer Composites: An Updated Overview

“…From the perspective of the panels, Mishra et al [ 81 ], Tang et al [ 18 ], Zhang et al [ 148 ], Olszewska et al [ 168 ], Bajya et al [ 182 ], and Hasan-Nezhad et al [ 178 ] analyzed the ballistic performance of a lightweight armor vest under other condition, namely using UHMWPE or E-Glass fabrics. Further analysis can also be observed in Nayak et al [ 191 ], such as thermogravimetric analysis, rheological tests, and high-strain tests, which are beyond the scope of the present work.…”

“…Bajya et al [ 182 ] focused on the ballistic performance through BFS using UHMWPE laminates and woven fabrics, as well as hybrid panels made of neat laminate layers and impregnated fabrics with SiO 2 /PEG colloidal fluid. The initial velocity of the bullet (7.5 g) was set to 430 m·s −1 .…”

Effects of thickness, fibre orientation and fabric textile on the low-velocity impact performances of thermoset and thermoplastic composites

“…For that reason, many scientific studies have been conducted to determine how the mechanical properties will change, and design the composites with optimum parameters to withstand impact loadings. [13][14][15][16][17][18][19][20] Tuo et al 13 numerically and experimentally examined the impact resistance and damage mechanisms for the thin composites subjected to LVI and CAI tests. In addition to the investigation of delamination by using ultrasonic C-scan, thermal dissipation was examined during the experimental studies using infrared thermography.…”