Damage tolerance of 2-dimentional UHMWPE/CF hybrid woven laminates subjected to low-velocity impact. (June 2020)

• Record Type: Journal Article
• Authors: Hu, Yuan; Shi, Yaoyao; Liu, Dongsheng; Guo, Jian; Zhang, Junfeng; Chen, Zhen
• Is Part Of: Materials & design. Volume 191(2020)
• Publication Date: 2020-06
• Subjects: Hybrid woven -- Residual flexural stiffness -- X-ray tomography -- Impact damage tolerance; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2020.108604
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: Carbon fiber reinforced polymer composite laminates (CFRPs) with weak impact damage tolerance were toughened with Ultra-high Molecular Weight Polyethylene (UHMWPE) fiber in the form of two-dimensional hybrid weaving in this paper. The effects of hybrid woven on impact behaviour and residual flexural stiffness of CFRPs, compared with plain carbon-fiber woven laminates, were investigated by drop weight impact and four-point bending experimental tests, together with finite element analysis (FEA). Indentation measurement and X-ray tomography, together with Scanning Electron Microscope (SEM) were employed for a comprehensive inspection of external and internal damage of specimens subjected to impact previously. A significant increment of 71.43% in penetration energy revealed the lower sensitivity of hybrid laminates to impact events in comparison with the pure carbon fiber reinforced ones, while post-impact flexural tests demonstrated that two-dimensional hybrid weaving was capable of bringing about a promotion of 10.1% in damage tolerance. The suppression mechanism of damage propagation in impact test, which lead to an enhancement in damage tolerance and structural integrity, was explained. Graphical abstract: Unlabelled Image Highlights: A toughened laminate was designed by hybrid weaving of carbon and Ultra-high Molecular Weight Polyethylene (UHMWPE) fibres. The introduction of UHMWPE lead to increments in penetration energy and damage tolerance by 71.43% and 10.1%, respectively. Damage inspections, including indentation measurement, X-ray tomography, and Scanning Electron Microscope, were employed.