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Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 380-391 doi: 10.1007/s11465-015-0365-7
The interface wave traveling along the boundary of two materials has been studied for nearly a century. However, experiments, engineering applications, and interface wave applications to the non-destructive inspection of interlaminar composite have developed slowly. In this research, an experiment that applies Stoneley waves (a type of interfacial wave between two solid half-spaces) is implemented to detect the damage in a multilayer structure. The feasibility of this method is also verified. First, the wave velocity and wave structure of Stoneley waves at a perfectly bonded aluminum-steel interface are obtained by solving the Stoneley wave dispersion equation of two elastic half-spaces. Thereafter, an experiment is conducted to measure the Stoneley wave velocity of an aluminum-steel laminated beam and to locate interlaminar cracks by referring to the Stoneley wave velocity and echo wave time. Results indicate that the location error is less than 2%. Therefore, Stoneley waves show great potential as a non-destructive inspection method of a multilayer structure.
关键词: crack localization interface waves Stoneley waves interlaminar damage multilayer structure
Experimental research on the multilayer compartmental particle damper and its application methods on
Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 751-766 doi: 10.1007/s11709-018-0509-z
关键词: energy dissipation devices multilayer compartmental particle damper self-anchored suspension bridges shaking tables test long-period structure seismic control
FEM-based strain analysis study for multilayer sheet forming process
Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 373-379 doi: 10.1007/s11465-015-0371-9
Fiber metal laminates have many advantages over traditional laminates (e.g., any type of fiber and resin material can be placed anywhere between the metallic layers without risk of failure of the composite fabric sheets). Furthermore, the process requirements to strictly control the temperature and punch force in fiber metal laminates are also less stringent than those in traditional laminates. To further explore the novel method, this study conducts a finite element method-based (FEM-based) strain analysis on multilayer blanks by using the 3A method. Different forming modes such as wrinkling and fracture are discussed by using experimental and numerical studies. Hydroforming is used for multilayer forming. The Barlat 2000 yield criteria and DYNAFORM/LS-DYNA are used for the simulations. Optimal process parameters are determined on the basis of fixed die-binder gap and variable cavity pressure. The results of this study will enhance the knowledge on the mechanics of multilayer structures formed by using the 3A method and expand its commercial applications.
关键词: finite element method (FEM) strain analysis multilayer sheet forming
Bin ZHAO, Xianze AO, Nuo CHEN, Qingdong XUAN, Mingke HU, Gang PEI
《能源前沿(英文)》 2020年 第14卷 第4期 页码 882-888 doi: 10.1007/s11708-020-0694-z
关键词: solar energy photothermic conversion radiative sky cooling spectral selectivity multilayer film
Mechanical properties and microstructure of multilayer graphene oxide cement mortar
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 1058-1070 doi: 10.1007/s11709-021-0747-3
关键词: graphene oxide cement mortar mechanical properties microstructure
Zilian QU,Yonggang MENG,Qian ZHAO
《机械工程前沿(英文)》 2015年 第10卷 第1期 页码 1-6 doi: 10.1007/s11465-015-0325-2
This paper proposes a new eddy current method, named equivalent unit method (EUM), for the thickness measurement of the top copper film of multilayer interconnects in the chemical mechanical polishing (CMP) process, which is an important step in the integrated circuit (IC) manufacturing. The influence of the underneath circuit layers on the eddy current is modeled and treated as an equivalent film thickness. By subtracting this equivalent film component, the accuracy of the thickness measurement of the top copper layer with an eddy current sensor is improved and the absolute error is 3 nm for sampler measurement.
关键词: CMP eddy current multilayer wafer Cu interconnects equivalent unit
Modeling of coal swelling induced by water vapor adsorption
Zhejun PAN
《化学科学与工程前沿(英文)》 2012年 第6卷 第1期 页码 94-103 doi: 10.1007/s11705-011-1172-2
关键词: multilayer adsorption vapour pressure coal shrinkage relative humidity permeability
Zhouyu ZHANG, Hao CHEN, Zhenglin HU, Shoubin ZHOU, Lan ZHANG, Jiayan LUO
《能源前沿(英文)》 2022年 第16卷 第5期 页码 706-733 doi: 10.1007/s11708-022-0833-9
关键词: composite solid electrolytes active filler/framework ion conduction path interphase compatibility multilayer design
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1419-1
• Pore structure affects biologically activated carbon performance.
关键词: Granular activated carbon Biologically activated carbon filter Bacterial community structure Pore structure
Hierarchical fractal structure of perfect single-layer graphene
T. Zhang, K. Ding
《机械工程前沿(英文)》 2013年 第8卷 第4期 页码 371-382 doi: 10.1007/s11465-013-0279-1
The atomic lattice structure of perfect single-layer graphene that can actually be regarded as a kind of hierarchical fractal structure from the perspective of fractal geometry was studied for the first time. Three novel and special discoveries on hierarchical fractal structure and sets were unveiled upon examination of the regular crystal lattices of the single-layer graphene. The interior fractal-type structure was discovered to be the fifth space-filling curve from physical realm. Two efficient methods for calculating the fractal dimension of this fresh member was also provided. The outer boundary curve had a fractal dimension equal to one, and a multi-fractal structure from a naturally existing material was found for the first time. A series of strict self-similar hexagons comprised a rotating fractal set. These hexagons slewed at a constant counterclockwise angle of 19.1° when observed from one level to the next higher level. From the perspective of fractal geometry, these pioneering discoveries added three new members to the existing regular fractal structures and sets. A fundamental example of a multi-fractal structure was also presented.
关键词: hierarchical fractal structure fractal dimension the fifth space-filling curve multi-fractal structure
Floating forest: A novel breakwater-windbreak structure against wind and wave hazards
《结构与土木工程前沿(英文)》 2021年 第15卷 第5期 页码 1111-1127 doi: 10.1007/s11709-021-0757-1
关键词: floating structure breakwater windbreak hydrodynamic CFD
多点协同传输机制下的多层无人机—地面异构网络覆盖性能分析 Research Article
王维昊,蒋逸凡,费泽松,郭婧
《信息与电子工程前沿(英文)》 2022年 第23卷 第1期 页码 61-72 doi: 10.1631/FITEE.2100310
《化学科学与工程前沿(英文)》 2022年 第16卷 第8期 页码 1268-1280 doi: 10.1007/s11705-022-2143-5
关键词: atomization nonsolvent induced phase separation bicontinuous porous structure micro-nano composite structure oil-water separation
Smart optical-fiber structure monitoring based on granular computing
Guan LU, Dakai LIANG,
《机械工程前沿(英文)》 2009年 第4卷 第4期 页码 462-465 doi: 10.1007/s11465-009-0073-2
关键词: smart material and structure GrC optical fiber sensor rough set clustering algorithm
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
标题 作者 时间 类型 操作
Experimental verification of the interface wave method to detect interlaminar damage of a metal multilayerstructure
Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI
期刊论文
Experimental research on the multilayer compartmental particle damper and its application methods on
Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG
期刊论文
FEM-based strain analysis study for multilayer sheet forming process
Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR
期刊论文
A spectrally selective surface structure for combined photothermic conversion and radiative sky cooling
Bin ZHAO, Xianze AO, Nuo CHEN, Qingdong XUAN, Mingke HU, Gang PEI
期刊论文
Eddy current measurement of the thickness of top Cu film of the multilayer interconnects in the integrated
Zilian QU,Yonggang MENG,Qian ZHAO
期刊论文
Ion conduction path in composite solid electrolytes for lithium metal batteries: from polymer rich to ceramic rich
Zhouyu ZHANG, Hao CHEN, Zhenglin HU, Shoubin ZHOU, Lan ZHANG, Jiayan LUO
期刊论文
Influence of pore structure on biologically activated carbon performance and biofilm microbial characteristics
期刊论文
Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted
期刊论文