Results 1 to 10 of about 12,557,310 (317)

Boosting engine performance with Bose–Einstein condensation [PDF]

New Journal of Physics, 2021
At low-temperatures a gas of bosons will undergo a phase transition into a quantum state of matter known as a Bose–Einstein condensate (BEC), in which a large fraction of the particles will occupy the ground state simultaneously.
Nathan M. Myers, F. Peña, O. Negrete, P. Vargas, G. Chiara, Sebastian Deffner   +5 more
semanticscholar   +1 more source

Effects of using ammonia as a primary fuel on engine performance and emissions in an ammonia/biodiesel dual‐fuel CI engine

Social Science Research Network, 2022
Ammonia is a promising alternative fuel that can replace current fossil fuels. Hydrogen carrier, zero carbon base emissions, liquid unlike hydrogen, and can be produced using renewable resources, making ammonia a future green fuel for the internal ...
E. Nadimi, G. Przybyła, D. Emberson, T. Løvås, Łukasz Ziółkowski, W. Adamczyk   +5 more
semanticscholar   +1 more source

Unbalance Prediction of Low Pressure Rotor Based on Mechanism and Data Fusion

Machines, 2022
The assembly, as the core part of low-pressure rotor manufacturing, is of great importance to ensure its unbalance. Low-voltage rotor assembly is a multi-process process influenced by the quality of part machining, assembly process, and assembly quality,
Mingwei Wang, Huibin Zhang, Lei Liu, Jingtao Zhou, Lu Yao, Xin Ma, Manxian Wang   +6 more
doaj   +1 more source

Crack initiation mechanisms and life prediction of GH4169 superalloy in the high cycle and very high cycle fatigue regime

Journal of Materials Research and Technology, 2023
In this study, the high cycle and very high cycle fatigue behavior of the GH4169 superalloy was investigated. The results of the fatigue tests demonstrated that failures in the high cycle fatigue regime were initiated from the material surface, whereas ...
Zhi Qin, Bin Li, Chen Chen, Tianyue Chen, Rui Chen, Han Zhang, Hongqian Xue, Changfeng Yao, Liang Tan   +8 more
doaj   +1 more source

Semi-Physical Simulation Optimization Method for Bolt Tightening Process Based on Reinforcement Learning

Machines, 2022
Bolted connections are the main method of connecting the components of an aero-engine low pressure rotor. Due to the influence of the elastic interaction relationship, it is easy to cause uneven distribution of the preload force of the bolt group ...
Huibin Zhang, Mingwei Wang, Wei Deng, Jianhua Zhao, Jingtao Zhou, Xin Ma, Lu Yao, Manxian Wang   +7 more
doaj   +1 more source

Design and Performance Investigation of a Vehicle Drive System with a 12/10 Flux-Switching Permanent Magnet Motor

Machines, 2022
The performance of a drive system with a flux-switching permanent magnet (FSPM) motor was studied through tests on a commercial electric vehicle (CEV).
Yada Chi, Guangyuan Shi, Haorong Guo, Nan Yang, Chengcheng Zhu, Minchao Cui   +5 more
doaj   +1 more source

Identification of Key Factors and Mining of Association Relations in Complex Product Assembly Process

International Journal of Aerospace Engineering, 2022
There are many factors involved in the assembly process of complex products, but only a few of the key influencing factors really affect the performance of the product assembly.
Huibin Zhang, Mingwei Wang, Wei Deng, Jingtao Zhou, Lei Liu, Jianfeng Li, Rong Li   +6 more
doaj   +1 more source

Research progress and development trend of fiber-reinforced ceramic matrix composites

Journal of Aeronautical Materials, 2021
Fiber-reinforced ceramic matrix composites have many excellent mechanical properties for their high specific modulus，high specific strength, low coefficient of thermal expansion，high temperature resistance，corrosion resistance and wear resistance. Due to
ZHANG Menghua, PANG Zixuan, JIA Yunxiang, LI Juncaoyi, SHAN Chenwei   +4 more
doaj   +1 more source

Experimental Investigation on Evaluation Method of Milling-grinding Surface Quality for SiC_f/SiC Composite

Hangkong gongcheng jinzhan, 2022
Since SiCf/SiC composite is typical heterogeneous and anisotropic material,the metal material quality evaluation system is not fully applicable.There is an urgent need to establish a suitable surface quality evaluation method.Combined with the ultrasonic
LIU Cong, XIONG Yifeng, WANG Wenhu, JIANG Ruisong, HUANG Bo, LIU Xiumei, LIWeijun   +6 more
doaj   +1 more source

Effect of ethanol-gasoline blends on SI engine performance and emissions

, 2021
Negative effects of using traditional engine fuels on climate change and global warning have produced a scenario of high competition to find an alternative fuel more friendly and unharmful to the environment.
Mortadha. K. Mohammed, Hyder Balla, Z. Al-Dulaimi, Z. Kareem, Mudhaffar S. Al-zuhairy   +4 more
semanticscholar   +1 more source