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alloy with thickness of 200 μm was achieved by Nd:YAG laser, and the laser process parameters were investigated by orthogonal experiment. The welding joint microstructure was observed by optical... hardness of the welding joint is greater than that of the base metal. Key words: shape memory alloy; laser welding; orthogonal experiment; microstructure 形状记忆合金由于具有普通材料所没有的超弹性和形状记忆性能而备受关注.NiTi基形状记忆合金......
solution and aging treatments of a novel wrought Al-Si-Cu-Mg alloy were investigated with orthogonal experiment and several other test methods, including OM, mechanical test, SEM and energy spectrum... effect. Additionally, the excessive Si atoms precipitate primarily on the surfaces of the eutectoid Si by diffusion. Key words: wrought aluminum alloy; solid solution; aging; orthogonal experiment......
conditions were determined by orthogonal experiment, and adsorption performances were tested by laboratory testing and field application. The results show that the best contents of NaOH, water and sodium... and screening. Key words: confined rescue space; CO2 adsorbent; absorption capacity; orthogonal test 密闭救援空间是指与外界相对隔离,自然通风不良,从事非常规,非连续作业或暂时避险,等待救援的有限空间[1].在密闭空间内,由于人体代谢,设备运行等因素,会使空间内多种有害气体浓度增加.据研究,密闭生存空间内......
J. Cent. South Univ. (2017) 24: 2685-2692 DOI: https://doi.org/10.1007/s11771-017-3681-8 Flexural failure experiment on cracked PC simply supported box girders CAO Guo-hui(曹国辉)1, ZHANG Wang(张旺)2... out on two prestressed concrete (PC) simply supported box girders. In the long-term load experiment, girder-1 (G1) is in an elastic state, while girder-2 (G2) is in a cracking state. To investigate......
is higher than that of the regression model. Key words: aluminum alloy; age forming; springback; tensile strength; orthogonal experiment; artificial neural network 1 Introduction Al-Li alloys have been... artificial neural network (RBFANN) methods were used to study the springback and tensile strength in age forming of 2A97 aluminum alloy based on orthogonal array. The ANOVA analysis indicates......
orthogonal experimental design. Experimental points distribute more evenly and more representative. If the levels increase, uniform design can lessen more obviously the increase in experiment quantities... as Eqn.(1): Table 1 Contents of agents in orthogonal experiment (mass fraction, %) Table 2 Orthogonal experimental arrangements and experimental results Table 3 Orthogonal experimental factors......
on compressed sensing. Underwater acoustic signals are transformed into the sparse domain for data storage at a receiving terminal, and the improved orthogonal matching pursuit (IOMP) algorithm is used... compression method can achieve a 10 times stronger compression for narrowband signals and a 5 times stronger compression for wideband signals than the orthogonal matching pursuit (OMP) algorithm. The IOMP......
with the power of 650 W and extraction twice. And the extraction rate of piceid reaches 91%. Key words: Polygonum cuspidatum Sieb et Zucc; piceid; microwave-assisted extraction; orthogonal experiment; high... by the orthogonal design using the content of piceid as index, determined by high performance liquid chromatography (HPLC). HPLC determination conditions were as follows: ODS-C18 column (200 mm×4.6 mm......
smelting process based on orthogonal experiment ZHOU Jun1, CHEN Zhuo2, XIE De-cheng2, MAO Yong-ning2, ZHOU Jie-min1, 2 (1. School of Metallurgy and Environment, Central South University, Changsha 410083... generation rate can be controlled around 3.2%, and the residual oxygen in the flue is nearly zero. Key words: flash smelting; numerical simulation; orthogonal experiment; parameter optimization 闪速炉具有生产率高,能耗低,烟......
of orthogonal test design and entropy weight decision, the sensitivity analysis of parameters of the lenticle was performed. It has been found that the vertical position and the area ratios of lenticles... weight decision; orthogonal decision 尾矿坝是尾矿库构筑物的主体,影响其稳定性的因素较多,大致与以下几个方面相关[1]:坝体内浸润线高度,沉积滩长度,尾矿砂密实度,尾矿沉积层的抗剪强度,堆积坝的高度,库水位的高度,排洪系统的有效性等.在理想状态下,在矿浆由坝前向库内流动的过程中,由于挟砂能力的变化,矿浆中的尾矿根据其粒径按粗,中,细,泥依次沉积,形成尾矿沉积滩,此沉积滩构......
