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《化学科学与工程前沿(英文)》 2023年 第17卷 第11期 页码 1755-1764 doi: 10.1007/s11705-023-2318-8
关键词: oxygen evolution reaction porous carbon nanosheets Co nanoparticles edge-induced topological defects Zn–air batteries
An industrial solution to light-induced degradation of crystalline silicon solar cells
Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG
《能源前沿(英文)》 2017年 第11卷 第1期 页码 67-71 doi: 10.1007/s11708-016-0430-x
关键词: Boron-oxygen defects c-Si solar cells light-induced degradation passivation forward bias
Tomographic diagnosis of defects in hydraulic concrete structure
ZHAO Mingjie, XU Xibin
《结构与土木工程前沿(英文)》 2008年 第2卷 第3期 页码 226-232 doi: 10.1007/s11709-008-0027-5
关键词: satisfactory processing orientation tomographic diagnosis orientation perpendicular
Automated classification of civil structure defects based on convolutional neural network
Pierclaudio SAVINO, Francesco TONDOLO
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 305-317 doi: 10.1007/s11709-021-0725-9
关键词: concrete structure infrastructures visual inspection convolutional neural network artificial intelligence
Mortarless structures based on topological interlocking
Arcady V. DYSKIN, Elena PASTERNAK, Yuri ESTRIN
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 188-197 doi: 10.1007/s11709-012-0156-8
关键词: topological interlocking fragmented structures segmented structures constraint delamination bending stiffness
Edge preparation methods for cutting tools: a review
《机械工程前沿(英文)》 2023年 第18卷 第4期 doi: 10.1007/s11465-023-0766-y
关键词: edge preparation method preparation principle cutting edge geometry edge characterization tool performance
Thermal reffusivity: uncovering phonon behavior, structural defects, and domain size
Yangsu XIE, Bowen ZHU, Jing LIU, Zaoli XU, Xinwei WANG
《能源前沿(英文)》 2018年 第12卷 第1期 页码 143-157 doi: 10.1007/s11708-018-0520-z
关键词: thermal reffusivity theory phonon behavior structure defects structural thermal domain (STD) size 2D material amorphous material
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 48-52 doi: 10.1007/s11465-018-0493-y
Three types of near-net shape casting aluminum parts were investigated by computed tomography to determine casting defects and evaluate quality. The first, second, and third parts were produced by low-pressure die casting (Al-12Si-0.8Cu-0.5Fe-0.9Mg-0.7Ni-0.2Zn alloy), die casting (A356, Al-7Si-0.3Mg), and semi-solid casting (A356, Al-7Si-0.3Mg), respectively. Unlike die casting (second part), low-pressure die casting (first part) significantly reduced the formation of casting defects (i.e., porosity) due to its smooth filling and solidification under pressure. No significant casting defect was observed in the third part, and this absence of defects indicates that semi-solid casting could produce high-quality near-net shape casting aluminum parts. Moreover, casting defects were mostly distributed along the eutectic grain boundaries. This finding reveals that refinement of eutectic grains is necessary to optimize the distribution of casting defects and reduce their size. This investigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net shape casting aluminum parts.
关键词: near-net shape casting aluminum parts casting defects low pressure die casting die casting semi-solid casting computed tomography
Structural design of morphing trailing edge actuated by SMA
Qi WANG, Zhiwei XU, Qian ZHU
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 268-275 doi: 10.1007/s11465-013-0261-y
In this paper, the morphing trailing edge is designed to achieve the up and down deflection under the aerodynamic load. After a detailed and accurate computational analysis to determine the SMA specifications and layout programs, a solid model is created in CATIA and the structures of the morphing wing trailing edge are produced by CNC machining. A set of DSP measurement and control system is designed to accomplish the controlling experiment of the morphing wing trailing edge. At last, via the force analysis, the trailing edge is fabricated with four sections of aluminum alloy, and the arrangement scheme of SMA wires is determined. Experiment of precise control integral has been performed to survey the control effect. The experiment consists of deflection angle tests of the third joint and the integral structure. Primarily, the ultimate deflection angle is tested in these two experiments. Therefore, the controlling experiment of different angles could be performed within this range. The results show that the deflection error is less than 4% and response time is less than 6.7 s, the precise controlling of the morphing trailing edge is preliminary realized.
关键词: morphing wing trailing edge shape memory alloy digital signal processor PID algorithm
Frequencies of circular plate with concentric ring and elastic edge support
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 168-176 doi: 10.1007/s11465-014-0299-5
Exact solutions for the flexural vibrations of circular plates having elastic edge conditions along with rigid concentric ring support have been presented in this paper. Values of frequency parameter for the considered circular plate are computed for different sets of values of elastic rotational and translation restraints and the radius of internal rigid ring support. The results for the first three modes of plate vibrations are computed and are presented in tabular form. The effects of rotational and linear restraints and the radius of the rigid ring support on the vibration behavior of circular plates are studied over a wide range of non-dimensional parametric values. The values of the exact frequency parameter presented in this paper for varying values of restraint parameters and the radius of the rigid ring support can better serve in design and as benchmark solutions to validate the numerical methods obtained by using other methods of solution.
关键词: circular plate frequency elastic edge rigid ring mode switching
Knife-edge technique for laser cooling
WANG Zhanshan, MA Shanshan, MA Yan, ZHAO Min, LIU Hengbiao
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 468-473 doi: 10.1007/s11465-007-0081-z
关键词: knife-edge technique uniformity coupled transfer fluorescent
刘新,李成名,刘文宝
《中国工程科学》 2013年 第15卷 第5期 页码 8-13
空间关系描述了地理信息系统(GIS)中实体间的位置、距离、方位、拓扑等的度量。为提高空间关系描述的惟一性和空间关系推理的准确性,将拓扑关系与方向关系集成描述,构建拓扑方向关系的描述表达模型。目标对象与参照物在X、Y、Z 3个坐标轴上投影间的Allen区间关系分别为[R1]、[R2]和[R3],提出利用Allen区间关系对[(R1,R2,R3)]描述三维拓扑方向区域,用定义法研究拓扑方向关系定性推理,通过一些典型例子说明拓扑方向关系推理过程和结果,推理结果用组合推理表表示。
Zixin ZHANG, Jia WU, Xin HUANG
《结构与土木工程前沿(英文)》 2017年 第11卷 第2期 页码 187-208 doi: 10.1007/s11709-017-0391-0
关键词: morphology block assembling vertex operation discontinuities
Virtual network embedding based on real-time topological attributes
Jian DING,Tao HUANG,Jiang LIU,Yun-jie LIU
《信息与电子工程前沿(英文)》 2015年 第16卷 第2期 页码 109-118 doi: 10.1631/FITEE.1400147
关键词: Virtual network embedding (VNE) Real-time topological attributes Betweenness centrality Correlation properties Network virtualization
标题 作者 时间 类型 操作
“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defects
期刊论文
An industrial solution to light-induced degradation of crystalline silicon solar cells
Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG
期刊论文
Automated classification of civil structure defects based on convolutional neural network
Pierclaudio SAVINO, Francesco TONDOLO
期刊论文
Mortarless structures based on topological interlocking
Arcady V. DYSKIN, Elena PASTERNAK, Yuri ESTRIN
期刊论文
Thermal reffusivity: uncovering phonon behavior, structural defects, and domain size
Yangsu XIE, Bowen ZHU, Jing LIU, Zaoli XU, Xinwei WANG
期刊论文
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
期刊论文
Knife-edge technique for laser cooling
WANG Zhanshan, MA Shanshan, MA Yan, ZHAO Min, LIU Hengbiao
期刊论文
Application of a vertex chain operation algorithm on topological analysis of three-dimensional fractured
Zixin ZHANG, Jia WU, Xin HUANG
期刊论文
Virtual network embedding based on real-time topological attributes
Jian DING,Tao HUANG,Jiang LIU,Yun-jie LIU
期刊论文