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| 1 | On-board measurement of particle numbers and their size distribution from a light-duty diesel vehicle:Influences of VSP and altitude显示文摘In this study,the particle size-resolved distribution from a China-3 certificated light-duty diesel vehicle was measured by using a portable emission measurement system(PEMS).In order to examine the influences of vehicle specific power(VSP) and high-altitude operation,measurements were conducted at 8 constant speeds,which ranged from 10 to 80 km/hr at10 km/hr intervals,and two different high altitudes,namely 2200 and 3200 m.The results demonstrated that the numbers of particles in all size ranges decreased significantly as VSP increased when the test vehicle was running at lower speeds(< 20 km/hr),while at a moderate speed(between 30 and 60 km/hr),the particle number was statistically insensitive to increase VSP.Under high-speed cruising conditions,the numbers of ultrafine particles and PM2.5were insensitive to changes in VSP,but the numbers of nanoparticles and PM10 surged considerably.An increase in the operational altitude of the test vehicle resulted in increased particle number emissions at low and high driving speeds;however,particle numbers obtained at moderate speeds decreased as altitude rose.When the test vehicle was running at moderate speeds,particle numbers measured at the two altitudes were very close,except for comparatively higher number concentrations of nanoparticles measured at 2200 m. | Jia Liu Yunshan Ge Xin Wang Lijun Hao Jianwei Tan Zihang Peng Chuanzhen Zhang Huiming Gong Ying Huang | 2017 | Journal of Environmental Sciences2017，29，7： | 12 |
| 2 | Design Property Network-Based Change Propagation Prediction Approach for Mechanical Product Development显示文摘Design changes are unavoidable during mechanical product development; whereas the avalanche propagation of design change imposes severely negative impacts on the design cycle. To improve the validity of the change propagation prediction, a mathematical programming model is presented to predict the change propagation impact quantitatively. As the foundation of change propagation prediction, a design change analysis model(DCAM)is built in the form of design property network. In DCAM,the connections of the design properties are identified as the design specification, which conform to the small-world network theory. To quantify the change propagation impact, change propagation intensity(CPI) is defined as a quantitative and much more objective assessment metric.According to the characteristics of DCAM, CPI is defined and indicated by four assessment factors: propagation likelihood, node degree, long-chain linkage, and design margin. Furthermore, the optimal change propagation path is searched with the evolutionary ant colony optimization(ACO) algorithm, which corresponds to the minimized maximum of accumulated CPI. In practice, the change impact of a gear box is successfully analyzed. The proposed change propagation prediction method is verified to be efficient and effective, which could provide different results according to various the initial changes. | songhua ma zhaoliang jiang wenping liu chuanzhen huang | 2017 | Chinese Journal of Mechanical Engineering2017，30，3： | 8 |
| 3 | Experimental study of surface integrity and fatigue life in the face milling of Inconel 718显示文摘 | Xiangyu WANG Chuanzhen HUANG Bin ZOU Guoliang LIU Hongtao ZHU Jun WANG | 2018 | Frontiers of Mechanical Engineering2018，13，2： | 5 |
| 4 | Annual Consultation on the Likelihood of Earthquakes in Continental China: Its Scientific and Practical Merits显示文摘Since the 1970s, Chinese seismologists have started to conduct the Annual Consultation on the Likelihood of Coming Earthquakes in the Next Year. This approach has unique scientific and practical merits either as an active response to the social needs in the situation that earthquake prediction research meets many difficulties, or as a real forward prediction test persistently conducted for 1/3 century. It is a pity that such an approach has not been well-known by international seismological community, and the scientific merits of such an endeavor is sometimes regrettably underestimated. | Wu Zhongliang Liu Jie Zhu Chuanzhen Jiang Changsheng Huang Fuqiong | 2007 | Earthquake Research in China2007，21，4： | 5 |
| 5 | Aerodynamic configuration integration design of hypersonic cruise aircraft with inward-turning inlets显示文摘In this work, a novel airframe/propulsion integration design method of the wing-body configuration for hypersonic cruise aircraft is proposed, where the configuration is integrated with inward-turning inlets. With the help of this method, the major design concern of balancing the aerodynamic performance against the requirements for efficient propulsion can be well addressed. A novel geometric parametrically modelling method based on a combination of patched class and shape transition(CST) and COONs surface is proposed to represent the configuration, especially a complex configuration with an irregular inlet lip shape. The modelling method enlarges the design space of components on the premise of guaranteeing the configuration integrity via special constraints imposed on the interface across adjacent surfaces. A basic flow inside a cone shaped by a dual-inflection-point generatrix is optimized to generate the inward-turning inlet with improvements of both compression efficiency and flow uniformity. The performance improvement mechanism of this basic flow is the compression velocity variation induced by the variation of the generatrix slope along the flow path. At the design point, numerical simulation results show that the lift-to-drag ratio of the configuration is as high as 5.2 and the inlet works well with a high level of compression efficiency and flow uniformity. The design result also has a good performance on off-design conditions. The achievement of all the design targets turns out that the integration design method proposed in this paper is efficient and practical. | Jifei WANG Jinsheng CAI Chuanzhen LIU Yanhui DUAN Yaojie YU | 2017 | Chinese Journal of Aeronautics2017，30，4： | 5 |
| 6 | Eutectic nucleation in Al-25wt.% Si alloy through DSC显示文摘Eutectic nucleation in hypereutectic Al-25wt.%Si alloy with the addition of P was studied by calculating the activation energy and nucleation work. The results indicate that P refinement, which can decrease the activation energy as well as nucleation work of eutectic solidification, can increase the eutectic nucleation frequency of Al-25wt.%Si alloy, so the addition of P can refine the eutectic structures of hypereutectic Al-Si alloys. According to the calculations, there is a certain relationship between the precipitation of primary silicon and eutectic solidification, and the eutectic nucleation mode is independent of morphology transition. | WU Yuying LIU Xiangfa JIANG Binggang HUANG Chuanzhen | 2010 | Rare Metals2010，29，1： | 5 |
| 7 | In-situ Fabricated TiB_2 Particle-whisker Synergistically Toughened Ti(C,N)-based Ceramic Cutting Tool Material显示文摘The mechanical properties of ceramic cutting tool materials can be modified by introducing proper content of nanoparticles or whiskers.However,the process of adding whiskers or nanoparticles has the disadvantages of high cost and health hazard as well as the agglomeration;although a new in-situ two-step sintering process can solve the above problems to some extent,yet the problems of low conversion ratio of the raw materials and the abnormal grain growth exist in this process.In this paper,an in-situ one-step synthesis technology is proposed,which means the growth of whiskers or nanoparticles and the sintering of the compact can be accomplished by one time in furnace.A kind of Ti(C,N)-based ceramic cutting tool material synergistically toughened by TiB_2 particles and whiskers is fabricated with this new process.The phase compositions,relationships between microstructure and mechanical properties as well as the toughening mechanisms are analyzed by means of X-ray diffraction(XRD)and scanning electron microscopy(SEM).The composite which is sintered under a pressure of 32 MPa at a temperature of 1700℃in vacuum holding for 60 min can get the optimal mechanical properties.Its flexural strength,fracture toughness and Vickers hardness are 540 MPa,7.81 MPa?m^(1/2)and 20.42 GPa,respectively.The composite has relatively high density,and the in-situ synthesized TiB_2 whiskers have good surface integrity,which is beneficial for the improvement of the fracture toughness.It is concluded that the main toughening mechanisms of the present composite are whiskers pulling-out and crack deflection induced by whiskers,crack bridging by whiskers/particles and multi-scale particles synergistically toughening.This study proposes an in-situ one-step synthesis technology which can be well used for fabricating particles and whiskers synergistically toughened ceramic tool materials. | LIU Hanlian SHI Qiang HUANG Chuanzhen ZOU Bin XU Liang WANG Jun | 2015 | Chinese Journal of Mechanical Engineering2015，28，2： | 4 |
| 8 | MULTI-SCALE AND MULTI-PHASE NANOCOMPOSITE CERAMIC TOOLS AND CUTTING PERFORMANCE显示文摘先进陶器的切工具材料 Al_2O_3/TiC/TiN (LTN ) 被微规模的 TiC 粒子和 nano 规模听粒子的加入和分散在氧化铝矩阵开发。与最佳的分散并且制作的技术,陶器的工具材料能得到的这多尺度、多相的 nanocomposite 更高的曲折力量和破裂坚韧比 Al_2O_3/TiC (副) 的没有 nano 规模听粒子的陶器的工具材料,特别破裂坚韧罐头活动范围到 7.8 MPa?m^(0.5 ) 。nano 规模听能导致谷物 fining 效果并且支持 sintering 过程得到更高的密度。共存的 transgranular 并且内部微规模的 TiC 和 nano 规模锡导致的小粒的破裂模式,和同类、使增加密度的微观结构能导致效果的显著加强并且韧化。切的表演并且穿先进多尺度、多相的 nanocomposite 的机制陶器的切工具被研究。 | HUANG Chuanzhen LIU Hanlian WANG Jun WANG Hui | 2007 | Chinese Journal of Mechanical Engineering2007，20，5： | 3 |
| 9 | Synergistically Toughening Effect of SiC Whiskers and Nanoparticles in Al_2O_3-based Composite Ceramic Cutting Tool Material显示文摘In recent decades, many additives with different characteristics have been applied to strengthen and toughen Al_2O_3-based ceramic cutting tool materials. Among them, SiC whiskers and SiC nanoparticles showed excellent performance in improving the material properties. While no attempts have been made to add SiC whiskers and SiC nanoparticles together into the ceramic matrix and the synergistically toughening effects of them have not been studied. An Al_2O_3-SiC_w-SiC_(np) advanced ceramic cutting tool material is fabricated by adding both one-dimensional SiC whiskers and zero-dimensional SiC nanoparticles into the Al_2O_3 matrix with an effective dispersing and mixing process. The composites with 25 vol% SiC whiskers and 25 vol% SiC nanoparticles alone are also investegated for comparison purposes. Results show that the Al_2O_3-SiC_w-SiC_(np) composite with both 20 vol% SiC whiskers and 5 vol% SiC nanoparticles additives have much improved mechanical properties. The flexural strength of Al_2O_3-SiC_w-SiC_(np) is 730±95 MPa and fracture toughness is 5.6±0.6 MPa·m^(1/2). The toughening and strengthening mechanisms of SiC whiskers and nanoparticles are studied when they are added either individually or in combination. It is indicated that when SiC whiskers and nanoparticles are added together, the grains are further refined and homogenized, so that the microstructure and fracture mode ratio is modified. The SiC nanoparticles are found helpful to enhance the toughening effects of the SiC whiskers. The proposed research helps to enrich the types of ceramic cutting tool and is benefit to expand the application range of ceramic cutting tool. | LIU Xuefei LIU Hanlian HUANG Chuanzhen WANG Limei ZOU Bin ZHAO Bin | 2016 | Chinese Journal of Mechanical Engineering2016，29，5： | 3 |
| 10 | Simulation of growing GaN in vertical HVPE reactor显示文摘The paper reports the setting up of a model of fluid dynamic for GaN HVPE system and the simulation. It is found that when the direction of gravity is opposite to the direction of GaCl flow inlet,there exits a distance at which the uniformity of the deposition is optimal. Here the good uniformity of the deposition is obtained when the distance between the substrate and GaCl inlet is 5 cm. The parameters of gas flow used in growing GaN are also optimized. In addition, the influence of gravity and buoyancy on the deposition of GaN is discussed, too. It is found that the angle between the direction of gravity and the direction of GaCl flow inlet has a major effect on the deposition rate and the uniformity of the growth. Compared with the situation when the direction of gravity is the same with the direction of GaCl flow inlet, although the deposition rate of GaN has decreased obviously, the uniformity of the deposition has improved largely when the direction of gravity is opposite to the direction of GaCl flow inlet. | ZHAO ChuanZhen, XIU XiangQian , ZHANG Rong , XIE ZiLi, LIU Bin, LIU ZhanHui, YAN HuaiYue & ZHENG YouDou Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, Department of Physics, Nanjing University, Nanjing 210093, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 3 |
| 11 | Enhancement of color purity in blue-emitting fluorene-pyridine-based copolymers by controlling the chain rigidity and effective conjugation length显示文摘 | Yang Wei Huang Jian Liu Chuanzhen | 2004 | Polymer2004，45，3： | 1 |
| 12 | Archi- tecture, implementation and application of complex e- vent processing in enterprise information systems based on RFID 显示文摘 | Zang Chuanzhen Fan Yushun Liu Renjing | 2007 | Enterprise Information Systems2007，1，1： | 1 |
| 13 | Study on in-situ synthesis of ZrB 2 whiskers in ZrB 2 –ZrC matrix powder for ceramic cutting tools显示文摘 | Liang Xu Chuanzhen Huang Hanlian Liu Bin Zou Hongtao Zhu Guolong Zhao Jun Wang | 2012 | International Journal of Refractory Metals and Hard Materials2012，，： | 1 |
| 14 | Architecture,implementation and application of complex event processing in enterprise information systems based on RFID显示文摘 | Zang Chuanzhen Fan Yushun Liu Renjing | 2008 | Information Systems Frontiers2008，10，5： | 1 |
| 15 | Differentiation of neuromyelitis optica from multiple sclerosis in a cohort from the mainland of China显示文摘 | Liu Ying ZhaoGuixian Yu Hai Lyu Chuanzhen Li Zhenxin Wu Zhiying | 2014 | Chinese Medical Journal2014，，18： | 1 |
| 16 | Precise measurement of gravity variation during a total solar eclipse显示文摘 | Wang Qianshen Yang Xinshe Wu Chuanzhen Guo Honggang Liu Hongchen and Hua Changchai | 2000 | Physical Review D2000，62，04： | 1 |
| 17 | Study on in-situ synthesis of ZrBz whiskers in ZrB2-ZrC matrix powder for ceramic cutting tools 显示文摘 | Xu Liang Chuanzhen Huang Hanlian Liu | 2013 | International Journal of Refractory Metals and Hard Materials2013，37，： | 1 |
| 18 | Architecture, implementation and application of complex event processing in enterprise information systems based on RFID显示文摘 | ZANG CHUANZHEN FAN YUSHUN LIU RENJING | 2007 | Enterprise Information Systems2007，1，1： | 1 |
| 19 | The temperature dependence of optical properties of InGaN alloys显示文摘In our experiments,the PL spectra of several In x Ga 1 x N alloy samples with In contents x=0.1,0.15 and 0.25 were measured as a function of temperature ranging from 10 K to 300 K.S-shaped temperature dependencies were observed in all InGaN samples and a sharp decrease in the full width at half maximum occurred with decreasing temperature in the moderate temperature region.It was found that both phenomena are relative to localization effects.In addition,the degree of localization effects in three samples was investigated using the band-tail model.Our findings are presented in this paper. | ZHAO ChuanZhen ZHANG Rong LIU Bin FU DeYi CHEN Hui LI Ming XIE ZiLi XIU XiangQian GU ShuLin ZHENG YouDou | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，3： | 1 |
| 20 | A modified simplified coherent potential approximation model of band gap energy of III-V ternary alloys显示文摘Based on the modification of the simplified coherent potential approximation(SCPA),a model is developed to calculate the composition dependence of the band gap energy of III-V ternary alloys with the same anion.The derived equation is used to fit the experimental band gap energy of In x Al 1 x N,In x Ga 1 x N and Al x Ga 1 x N with x from 0 to 1.It is found that the fitting results are better than those done by using SCPA.The fitting results are also better than those obtained by using the formula with a small bowing coefficient,especially for In x Al 1 x N.In addition,our model can also be used to describe the composition dependence of band gap energy of other III-V ternary alloys. | Zhao ChuanZhen Zhang Rong Liu Bin Fu DeYi Li Ming Xiu XiangQian Xie ZiLi Zheng YouDou | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，3： | 1 |
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