A5102714210- Tribology and Wear Analysis
- Lubricants and Their Additives
- Polymer Nanocomposites and Properties
- Millimeter-Wave Propagation and Modeling
- Radio Wave Propagation Studies
- Indoor and Outdoor Localization Technologies
- Vehicular Ad Hoc Networks (VANETs)
- Green IT and Sustainability
- Power Line Communications and Noise
Beijing Jiaotong University
2023
Millimeter-wave (mmWave) automotive radar can detect the surrounding environment using highly directional, high-frequency electromagnetic waves. With these advantages, mmWave has become an important component of autonomous driving and integrated sensing systems. Designing systems algorithms requires application realistic channel models simulation. In this paper, propagation is measured, characterized, modeled for with typical configurations in scenarios. Based on measurements urban street...
Abstract Polytetrafluoroethylene (PTFE)/aramid fabric composites are currently widely used as self-lubricating bearing liners. In this study, a PTFE composite coating was performed to improve the friction stability of PTFE/aramid in long-term friction. Effects surface modification on tribological properties were studied using ball-on-disk tests. Results showed that under different sliding condition, coefficient modified and unmodified similar after 240 min. However, curves increased first,...
Graphite/graphene particles were employed as functional fillers to modify hybrid polytetrafluoroethylene/polyisophthaloyl metaphenylene diamine (PTFE/Nomex) fabric-reinforced phenolic composites. The tribology behavior was investigated using a ball-on-disk wear tester, together with 3D digital microscope. graphite/graphene exhibits the synergetic effect from results, which not only reduces friction efficient but also improves resistance of Moreover, mechanisms studied by surface...
With the gradual development of autonomous driving technology, cost traditional road test is becoming higher and higher. The mainstream approach has been transferred to accurate efficient simulation system based on typical environment. Millimeter wave (mmWave) radar an important part integrated sensor system. This means that foundation future environment needs real mmWave vehicular signal propagation mechanism. Therefore, research radio characteristics in frequency band basis simulation. In...
Purpose The purpose of this study is to determine the tribological behavior and wear mechanism a polytetrafluoroethylene (PTFE)/polyester (PET) fabric composite for application as self-lubricating liner suitable high-speed low-load friction conditions. Design/methodology/approach effects different loads sliding speeds on coefficients characteristics were studied using reciprocating tests. Scanning electron microscopy, extended depth-of-field energy-dispersive X-ray spectrometry was used...