Abstract
UHMWPE composites were prepared by hot pressing process with micro-crystal muscovite as reinforced particulates. The mechanical behaviors of composites to impact loading was evaluated by split Hopkinson bar. The results demonstrated that dynamic yield stress and failure stress of UHMWPE composites were gradually increased when the filling amount was less than 20%; when the filling content of muscovite was around 15%, the energy absorption efficiency of the composite reaches maximum value. It was also found that when strain rate within 3200/s, the dynamic yield stress, failure stress and energy absorption efficiency of UHMWPE composites increased with the increase of strain rate and display strain rate enhancement effect.
Highlights
Erosion wear cause streamline appearance damage in flow-passing surface, which has been always the Technical problems that impact a safe and stable operation in the field of hydropower and water conservancy engineering equipment[1, 2]
The results show that Ultra high molecular weight polyethylene (UHMWPE) composites filled with particles exhibit better corrosion resistance than plain carbon steel under hyperconcentrated flow conditions of low head[3]
The micro-crystal muscovite was selected as the reinforcing particle[7] and the UHMWPE composite materials were prepared by hot pressing method, and the mechanical properties of UHMWPE composites under dynamic impact load were investigated by using SHPB experimental technique[8]
Summary
Erosion wear cause streamline appearance damage in flow-passing surface, which has been always the Technical problems that impact a safe and stable operation in the field of hydropower and water conservancy engineering equipment[1, 2]. Al Maliky et al has studied the dynamic impact characteristics of different polymers by using the Hopkinson's pressure bar technique and the expansion ring technique[5]. The Hopkinson pressure bar test datas of metal, ceramic and plastic three engineering materials were summarized by YU Shuisheng who improved Johnson-Cook constitutive model and could well describe the stress-strain relationship of different materials in high speed impact load[6]. The micro-crystal muscovite was selected as the reinforcing particle[7] and the UHMWPE composite materials were prepared by hot pressing method, and the mechanical properties of UHMWPE composites under dynamic impact load were investigated by using SHPB experimental technique[8]
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