A5035427852- Tribology and Wear Analysis
- High-Velocity Impact and Material Behavior
- Energetic Materials and Combustion
- Advanced ceramic materials synthesis
- Fluid Dynamics and Heat Transfer
- 3D Printing in Biomedical Research
- Polymer Foaming and Composites
- Polymer Science and Applications
- Material Properties and Applications
- Additive Manufacturing and 3D Printing Technologies
- Bone Tissue Engineering Materials
- Erosion and Abrasive Machining
North University of China
2020-2022
The jet generated through PTFE based inert material liner has the characteristics of low energy, density, and large aspect ratio, which can effectively achieve "penetration without explosion" explosive reactive armor. PTFE/Cu composite with various densities is prepared, to research roles preparation procedure density in destroy effect on Through numerical simulation research, it was found that there no reaction at all layer penetrated by sinter molded, while hot-pressing sintering extrusion...
Three-dimensional printing is becoming increasingly popular because of its extensive applicability. However, materials remain limited. To determine the mechanical properties polylactic acid (PLA) and copper powder-filled (PLA-Cu) subjected to static dynamic loading, stress-strain curves were obtained under conditions different strain rates using a universal material testing machine separated Hopkinson pressure bar experimental device. Scanning electron microscopy (SEM) was used analyze...
Polytetrafluoroethylene (PTFE)/Cu is an ideal low-density candidate preferred for energetic charge warheads, which can penetrate reactive armour without explosion. In this study, six types of modified PTFE with different Cu contents were produced using cold isostatic pressing (CIPing), followed by high-temperature sintering (CIPing + HTSing). The crystallinity and phase the samples analysed X-ray Different analysis. stress–strain curves PTFE/Cu under dynamic impact evaluated split Hopkinson...
The jet formed by the traditional metal liner has a slender shape. diameter of head is consistent with that tail, and ductility good. When it used to penetrate target, good damage effect. low-density PTFE/Cu liner, according different preparation processes densities, degrees radial expansion. This phenomenon may lead expansion during penetration process, resulting in effect, which from previous on target. In this paper, numerical simulation liners penetrating steel targets carried out,...
Abstract In this paper, PTFE/Cu composite material for liner is taken as the research object, and preparation process jet forming characteristics of are studied. The liners were prepared by extrusion molding, molded sintering hot-pressing sintering. Due to different processes, microstructures can occur, including defects such pores microcracks, resulting in strength density liner, leading differences jet. Therefore, was simulated finite element numerical simulation software. It found that...
Abstract The PTFE/Cu composite powder was selected as the experimental raw material, and modified material with dense structure prepared by hot pressing sintering process. morphology of product before after test compared observed SEM. effect different ratios on densification results studied, difference between molding analyzed. show that hot-pressed can produce a density up to 99.9%, which is higher than obtained under same pressure. SEM image shows that, unlike molding, hot-pressing makes...
In this paper, the effect of manufacturing methods on compressive properties Cu‐PTFE (polytetrafluoroethylene) composites was investigated. Two types specimens were prepared through different (extrusion forming and hot‐press sintering). The tested using an electrohydraulic press split‐Hopkinson pressure bars for quasi‐static loading dynamic impact, respectively. specific fracture processes recorded by a high‐speed camera, failure microstructures analysed SEM. According to results, sintered...