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) subsystem and an organic Rankine cycle (ORC) subsystem driven by low-temperature waste heat. Firstly, a comparative analysis is carried out between the separated natural gas expansion system.... Furthermore, the isentropic efficiency of the natural gas expander has a great influence on the net power output of the system. Key words: natural gas; energy recovery; organic Rankine cycle (ORC); working......
the triangle waveform has less damage than sinusoidal waveform. In each cycle, the number of microscopic cracks increases in the loading stage, while it keeps nearly constant in the unloading stage. 2... value of mean stress and stress amplitude, below which no further damage accumulated after the first few cycle loadings. 4) The high-to-low loading sequence has more damage than the low-to-high loading......
Trans. Nonferrous Met. Soc. China 28(2018) 2102-2106 Grain size based low cycle fatigue life prediction model for nickel-based superalloy Peng ZHANG1, Qiang ZHU1, Gang CHEN1, He-yong QIN2, Chuan-jie... June 2017; accepted 8 September 2017 Abstract: Nickel-based superalloys are easy to produce low cycle fatigue (LCF) damage when they are subjected to high temperature and mechanical stresses. Fatigue......
3D Printing Engineered Multi-porous Cu Microelectrodes with In Situ Electro-Oxidation Growth of CuO Nanosheets for Long Cycle,High Capacity and Large Rate SupercapacitorsTao Liu,Yuejiao Chen,Libao ChenState Key Laboratory of Powder Metallurgy,Central South University摘 要:Developing excellent pseudocapacitive electrodes with long cycle,high areal capacity......
hydraulic braking forces were created. A driving cycle was established based on some different braking intensities and ECE-EUDC driving cycle. Simulation on this control strategy was performed in ADVISOR... words: electric vehicle; regenerative braking; safe braking; control strategy; driving cycle 纯电动汽车由于其可以通过电机回收部分制动能量而具有明显的节能减排优势.然而,再生制动系统必须与液压制动系统共同作用,才能满足汽车较大制动强度下对制动系统的要求.若液压制动系统产生的前,后轮制动器制动力比例关系不......
(1) 式中:Pf-d∈[0,70%]；Pf-u为试样上层细粒土的质量分数,%；S1-1,S2-1和S3-1的Pf-d均为0；S1-2,S2-2和S3-2的Pf-d均为20%,S4的Pf-d为70%；Pf-l为试样下层细粒土的质量分数,%. 粒组平均直径差异引起的粒径空间不均匀分布程度用Pd-d表示. (2) 式中:Pd-d属于[0,95%]区间的离散值(因为实际实验过程中筛径都是固定和非连续的)；S1-1和S1-2的Pd-d均为0；S2-1和S2-2的Pd-d均为50%；S3-1和S3-2的Pd-d均为78.33%；S4的Pd-d均为95%；为试样下层最大粒组中最大粒径和最小粒径的平均值；为......
Received 28 July 2006; accepted 15 September 2006 Abstract: Monotonic (tensile and compressive) and high cycle fatigue properties of the forged magnesium alloy AZ80 were investigated by using... alloy. Key words: mechanical properties; tensile; compression; high cycle fatigue; wrought magnesium alloys; AZ80; directional anisotropy 1 Introduction Magnesium alloys, due to their low densities......
and anode would be increased, leading the fading of capacity and potential. Key words: 18650 lithium ion battery; capacity fading; cycle performance 1 Introduction Because of the high energy, high power... at open circuit for 1 h to be stabilized. Cycle voltammetry (CV) was conducted with electrochemical workstation (CHI6600). Electrochemical impedance spectroscopy (EIS) was carried out by means......
文章编号:1004-0609(2012)10-2908-08 原铝与再生铝生产的能耗和温室气体排放对比 丁 宁,高 峰,王志宏,龚先政 (北京工业大学 材料科学与工程学院,北京 100124) 摘 要:采用生命周期评价方法(Life cycle assessment, LCA)对2008年我国原铝和再生铝生产过程的能耗... University of Technology, Beijing 100124, China) Abstract: Based on life cycle assessment (LCA), a quantitative analysis of energy consumption and greenhouse gas emission caused by primary aluminum......
in the cooker were 120℃ and 100% respectively. The mechanical fatigue test was carried in a displacement-controlled mode to measure the low cycle fatigue of the joints. The results show that Zn diffuses... of Sn-Zn solder joints when they are subjected to 120℃ and 100% relative humidity with 2.03×105Pa pressure for 192h. Key words: Sn-Zn based solder; aging; humidity; microstructure; low cycle fatigue......
