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Frontiers of Mechanical Engineering 2023年第4期18卷 1-47页

作者： Shuguo HU Changhe LI Zongming ZHOU Bo LIU yanbin zhang Min YANG Benkai LI Teng GAO Mingzheng LIU Xin CUI Xiaoming WANG Wenhao XU Y.S.DAMBATTA Runze LI Shubham SHARMA School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China Hanneng(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266100China Sichuan New Aviation TA Technology Co. Ltd.Shifang 618400China Mechanical Engineering Department Ahmadu Bello UniversityZaria 810106Nigeria Massachusetts Institute of Technology CambridgeMA 02139USA Department of Mechanical Engineering IK Gujral Punjab Technical UniversityPunjab 144603India

Nanoparticle-enhanced coolants(NPECs)are increasingly used in minimum quantity lubrication(MQL)machining as a green lubricant to replace conventional cutting fluids to meet the urgent need for carbon emissions and achieve sustainable ***,the thermophysical properties of NPEC during processing remain unclear,making it difficult to provide precise guidance and selection principles for industrial ***,this paper reviews the action mechanism,processing properties,and future development directions of ***,the laws of influence of nano-enhanced phases and base fluids on the processing performance are revealed,and the dispersion stabilization mechanism of NPEC in the preparation process is ***,the unique molecular structure and physical properties of NPECs are combined to elucidate their unique mechanisms of heat transfer,penetration,and antifriction ***,the effect of NPECs is investigated on the basis of their excellent lubricating and cooling properties by comprehensively and quantitatively evaluating the material removal characteristics during machining in turning,milling,and grinding *** showed that turning of Ti‒6Al‒4V with multi-walled carbon nanotube NPECs with a volume fraction of 0.2%resulted in a 34%reduction in tool wear,an average decrease in cutting force of 28%,and a 7%decrease in surface roughness Ra,compared with the conventional flood ***,research gaps and future directions for further applications of NPECs in the industry are presented.

关键词： nanoparticle-enhanced coolant minimum quantity lubrication biolubricant thermophysical properties turning milling grinding

阳极氧化处理对2014-T6铝合金弯曲疲劳性能的影响

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金属学报 2014年第6期50卷 715-721页

作者：张艳斌张立民张继旺曾京西南交通大学牵引动力国家重点实验室成都610031

对2014-T6铝合金疲劳试样的缺口部位进行了阳极氧化处理,表面氧化层厚度分别为5,10和20μm.通过旋转弯曲疲劳试验机对阳极氧化处理前后的疲劳试样进行了疲劳实验.分析了阳极氧化处理对该铝合金材料弯曲疲劳性能的影响,并讨论了该材料的... 详细信息

对2014-T6铝合金疲劳试样的缺口部位进行了阳极氧化处理,表面氧化层厚度分别为5,10和20μm.通过旋转弯曲疲劳试验机对阳极氧化处理前后的疲劳试样进行了疲劳实验.分析了阳极氧化处理对该铝合金材料弯曲疲劳性能的影响,并讨论了该材料的弯曲疲劳性能随着表面氧化层厚度增加的变化趋势.结果表明,在中低应力下,阳极氧化处理降低该铝合金材料的弯曲疲劳寿命;随着氧化层厚度增加,疲劳裂纹起始位置从氧化层表面转移到铝合金基体表面,材料的弯曲疲劳寿命降低,但厚度增加到一定程度,材料S-N曲线的倾斜部分随着氧化层厚度的继续增加基本保持不变.

关键词：铝合金阳极氧化处理氧化层厚度疲劳性能疲劳极限

Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 102-110页

作者： Qiang Liu Xiang Li Shen Du Ming Gao yanbin Yin Jiongming zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the *** which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid *** contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive ***,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding *** results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles *** addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually *** one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the *** findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

关键词： mold flux low basicity bubbles three-dimensional X-ray microscope viscosity

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基于特征空间切分建模的变形手势跟踪算法

机器人 2018年第4期40卷 401-412页

作者：张彦彬陈晓春深圳清华大学研究院电子设计自动化实验室广东深圳518057 哈尔滨工业大学(深圳) 广东深圳518055

为解决人机交互中手势形变和无规律运动带来的跟踪难题,提出了一种基于特征空间切分建模的非参数核密度估计算法来实现手势跟踪.首先,在检测模块中利用AdaBoost分类器检测图像中手势的存在,将检测到的手势位置信息传送给跟踪模块,该模... 详细信息

为解决人机交互中手势形变和无规律运动带来的跟踪难题,提出了一种基于特征空间切分建模的非参数核密度估计算法来实现手势跟踪.首先,在检测模块中利用AdaBoost分类器检测图像中手势的存在,将检测到的手势位置信息传送给跟踪模块,该模块精确提取手势目标从而对其颜色建模.然后,利用目标的颜色模型对各帧图像进行后验概率密度估算,获取运动目标的概率密度图像,将其分解成手势运动区和同色干扰区.最后,对同色干扰区采用混合高斯建模来削弱同色目标的干扰,当目标丢失时启动再检测模块,并利用贝叶斯分类器与方差分类器实现手势目标重检.实验结果表明,该算法通过对特征空间切分建模以及不同分类器的级联解决了变形手势跟踪的同色干扰与再检测难题.该算法提高了跟踪的准确率(>81.5%),适合于非刚性物体做无规则运动的复杂场景.

关键词：非参数核密度估计变形手势运动跟踪概率密度图同色干扰区再检测模块

Reactivity Monitoring Using the Pulsed Neutron Source Method for the Lead-Based Zero Power Reactor

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IMP & HIRFL Annual Report 2019年第1期 224-225页

作者： Chen Liang Ma Fei zhang Xueying Ge Honglin Ju Yongqin zhang yanbin zhang Hongbin 不详

The Accelerator Driven Sub-critical System(ADS)has an extensive application prospect in energy production and *** the operation of an ADS facility,the subcritical reactivity monitoring is of great significance for saf... 详细信息

关键词： reactivity critical Reactivity

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溶栓剂蛋白质工程的新进展

北京大学学报（自然科学版） 2000年第2期36卷 286-294页

作者：张彦斌徐长法北京大学蛋白质工程及植物基因工程国家重点实验室北京100871

介绍了国内外溶栓剂蛋白质工程方面的新进展，主要涉及了组织型纤溶酶原激活剂（ｔＰＡ）、尿激酶型纤溶酶原激活剂（ｕＰＡ）、链激酶（ＳＫ）、葡萄球菌激酶（ＳＡＫ）、ＤＳＰＡ及ＴＳＶＰＡ的研究进展。一些ＰＡ突变体... 详细信息

介绍了国内外溶栓剂蛋白质工程方面的新进展，主要涉及了组织型纤溶酶原激活剂（ｔＰＡ）、尿激酶型纤溶酶原激活剂（ｕＰＡ）、链激酶（ＳＫ）、葡萄球菌激酶（ＳＡＫ）、ＤＳＰＡ及ＴＳＶＰＡ的研究进展。一些ＰＡ突变体及新型溶栓剂，如Ｋ２Ｐ、ＴＮＫＰＡ和ＳＴＡＲ等的临床实验结果表明它们在延长体内半寿期、增强对血纤维蛋白选择性和溶栓效率等方面有较大的改进。但溶栓治疗造成的颅内出血等局部性出血问题仍是目前的难题之一，说明新型溶栓剂的研制有很大潜力。

关键词：溶栓剂纤溶酶原激活剂蛋白质工程 t-PA u-PA

(Si_(0.2)Ti_(0.2)Nb_(0.2)Ta_(0.2)V_(0.2))C高熵陶瓷的低温制备及吸波性能

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材料导报 2024年第3期38卷 42-47页

作者：张昊黄宗玥张妍彬魏剑西安建筑科技大学材料科学与工程学院西安710055

寻求具有良好耐高温及力学性能的新型陶瓷材料是吸波材料领域的研究热点之一。高熵碳化物陶瓷具有高温热稳定性及抗氧化性好等优点,但合成温度高且吸波性能研究较少,限制了其在高温吸波材料领域的应用。本工作采用熔盐法合成了多晶岩盐... 详细信息

寻求具有良好耐高温及力学性能的新型陶瓷材料是吸波材料领域的研究热点之一。高熵碳化物陶瓷具有高温热稳定性及抗氧化性好等优点,但合成温度高且吸波性能研究较少,限制了其在高温吸波材料领域的应用。本工作采用熔盐法合成了多晶岩盐晶型(Si_(0.2)Ti_(0.2)Nb_(0.2)Ta_(0.2)V_(0.2))C高熵碳化物陶瓷,研究了其物相组成、微观形貌及吸波特性。结果表明:随着反应温度的升高,样品的衍射峰逐渐锐化,吸波性能明显提高。当反应温度为1500℃时,3.72 GHz时最低反射损耗达-34.68 dB;与已报道的高熵碳化物陶瓷相比,在相同的有效吸收带宽(2.3 GHz)下,涂层厚度减少了13.3%(1.5 mm降低到1.3 mm),其介电损耗主要来源于极化损耗和导电损耗。本工作制备的高熵碳化物陶瓷可以为研究制备新型环境适应、耐高温、抗冲击的高性能单相吸波材料提供新途径。

关键词：高熵碳化物陶瓷吸波材料吸波性能介电损耗熔盐法

A Cooperative Vehicular Technique for Direction

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A Cooperative Vehicular Technique for Direction

Propagation of light near the band edge in one-dimensional multilayers

第五届中国卫星导航学术年会

作者： Dengyun Lei Weijun Lu yanbin zhang DunShan Yu Institute of Microelectronics Peking University School of electronics engineering Beijing University of posts and Telecommunication

Due to the shadowing in the urban environment,the GNSS receiver positioning accuracy is poor which is unable to meet the critical applications in vehicle *** meet the accuracy of relative positioning in critical vehicles application,a variety of wireless ranging methods is being applied to the vehicle ***,they not get the direction information between *** this paper,a method that combines wireless ranging and difference pseudorange is *** method increase the accuracy of direction information in the relative positioning and can be implemented in the case of only 2～3 shared satellites which expand the cooperation positioning *** with traditional method,the variance of Azimuth is reduced by 50%.

关键词： Pseudorange difference Direction method Cooperation position

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Chinese Physics B 2023年第4期32卷 370-373页

作者：唐洋范灵杰张彦彬李同宇沈唐尧石磊 State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China

Optical systems offer rich modulation in light propagation, but sufficient quantitative descriptions lack when highly complex structures are considered since practical structures contain defects or imperfections. Here, we utilize a method combining a data-fitting method and a time-resolved system to describe light propagation near the band edges in onedimensional structures. Calculations after optimization of the method show little deviation to the measurements.

关键词： light propagation band edge light localization