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is 1.41, although the reaction temperature is still 75 ℃, the agglomeration speed is very fast, but the initial supersaturation of aluminate solution is too high, the secondary nucleation is also fast...J. Cent. South Univ. Technol. (2008) 15: 786-790 DOI: 10.1007/s11771-008-0145-1 Effects of temperature and initial molar ratio of Na2O to Al2O3 on agglomeration of fine Al(OH)3 seed in synthetic......
with radar guns. Following the factor analysis procedure, two factors, which explain 96.722% of the variance in the original data, were retained from the initial seven speed measures. According...Measuring speed consistency for freeway diverge areas using factor analysisQU Xu(曲栩)1, GUO Tang-yi(郭唐仪)2, WANG Wei(王炜)1, HU Qi-zhou(胡启洲)2(1. School of Transportation, Southeast University, Nanjing......
Microstructure evolution of Cu-Pb monotectic alloys during directional solidification CUI Hong-bao(崔红保), GUO Jing-jie(郭景杰), SU Yan-qing(苏彦庆), DING Hong-sheng(丁宏生), WU Shi-ping(吴士平), BI Wei-sheng... and the cellular structures with L2 phase at the cell boundaries are developed. Key words: copper-lead monotectic alloy; directional solidification; transient morphology; microstructure evolution 1......
evolution algorithm SU Guo-shao(苏国韶) 1, 2, ZHANG Xiao-fei(张小飞) 1, CHEN Guang-qiang(陈光强) 1, FU Xing-yi(符兴义) 1 (1.College of Civil and Architecture Engineering, Guangxi University, Nanning 530004, China... of a rheological constitutive model for rocks, a new method based on differential evolution (DE) algorithm combined with FLAC3D (a numerical code for geotechnical engineering) was proposed for identification......
in Figure 8(a), the energy evolution characteristics of the intact sample can be divided into three stages, namely, the initial energy consumption stage, energy stable accumulation stage, and energy...). Figure 8 (a) Stress-strain and energy evolution curves of intact sample; Cross-jointed samples containing opening:(b) β=15°; (c) β=30°; (d) β=45°; (e) β=60°; (f) β=75° 1) Initial energy consumption stage......
Deformation behavior and strength evolution of MIM compacts during thermal debinding LIU Xiang-quan(刘相权), LI Yi-min(李益民), YUE Jian-ling(岳建岭), LUO Feng-hua(罗风华) State Key Laboratory of Powder... heating rate may induce deformation defects. It is also indicated that effect of the factors for the deformation defects is different in different debinding stages. The strength evolution......
was found to have no influence on the initial crack stress. Key words: shear rate-dependent behavior; rock discontinuity; dynamic evolution; initial crack stress Cite this article as: GU Lin-lin, WANG Zhen... J. Cent. South Univ. (2021) 28: 1875-1887 DOI: https://doi.org/10.1007/s11771-021-4736-4 Dynamic evolution of shear rate-dependent behavior of rock discontinuity under shearing condition GU Lin-lin......
irradiation. The optimum mass fraction of the loaded V2O5 is 8%, and the largest speed of O2 evolution for 8%V2O5 (mass fraction) loaded TiO2 catalyst is 118.2 ?mol/(L·h) under UV irradiation, and 83.7 ?mol... irradiation, the order of O2 evolution speed does not change. But the rates of O2 evolution change, and the maximum rate is 83.7 ?mol/(L·h) for 8%V2O5-TiO2. The band gap of pure TiO2 is 3.0 eV......
A Review of Microstructural Evolution in the Adiabatic Shear Bands Induced by High Speed MachiningChunzheng DUAN,Minjie WANGKey Laboratory for Precision and Non-Conventional Machining of the Ministry... into the microstructural and fracture aspects of adiabatic shear bands (ASBs) of the hardened steels and Ti alloys induced by high speed machining (HSM) are briefly reviewed. The principal findings are the following......
J. Cent. South Univ. (2020) 27: 3702-3720 DOI: https://doi.org/10.1007/s11771-020-4561-1 MPC-based path tracking with PID speed control for high-speed autonomous vehicles considering time-optimal... the desired path as fast as possible, a novel autonomous vehicle path tracking based on model predictive control (MPC) and PID speed control was proposed for high-speed automated vehicles considering......
