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Adjust structure and change the mode of development

Du Xiangwan

Strategic Study of CAE 2012, Volume 14, Issue 3, Pages 4-7

Abstract: After 30 years of high speed development, China has entered into a key period of adjusting economic structure

Keywords： adjust structure change the mode of development engineering sector

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Research and application of adding well slots technology

Li Daquan,Luo Zhenq,Hu Hui,Zhang Xulin

Strategic Study of CAE 2011, Volume 13, Issue 5, Pages 88-92

Abstract: By analyzing and demonstrating the space condition, the drilling type, structure strength and systemengineering practice.It was demonstrated that the adding well slots can meet the needs of drilling adjustwell of old platform with the specialty of simple structure, short project period,low-cost and great

Keywords： adjust well casing pipe adding well slots structure checking

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The Research of the Working Parameter Adjustment Principle and Control Strategy on Hydraulic Impact Machine

Liu Zhong,,Chu Fulei,Long Guojian,Liao Yongzhong

Strategic Study of CAE 2005, Volume 7, Issue 10, Pages 73-77

Abstract:

This paper analyses the working parameter adjustment methods for hydraulic impact machine at home and abroad. An adjustment principle with distance shifted continually is first suggested in this paper. A new device with distance shifted continually on the basis of this study is designed, and the computer digital simulation is performed. A hydraulic impact machine which is controlled by computer on the basis of this study is designed. The design principles, structural feature, technical properties and control strategy are also described.

Keywords： hydraulic impact machine continual adjust working parameter control system

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The technology of the figure of test assembling when buildingthe steel box of Xihoumen suspension big bridge

Xu Liang ,Wang Huiping,Zhang Shengli,Qian Yexiang

Strategic Study of CAE 2010, Volume 12, Issue 7, Pages 43-46

Abstract:

Horizontal preframe method was adopted when steel stiffening girders of Xihoumen Bridge were fabricated, i.e. the steel box girders were pre-assembled in horizontal direction. To insure the vertical line figure of girder segments is right, relevant parameters should be calculated and stimulated first according to design data, then every part of the steel box should be adjusted in preframe process, and finally the linear accuracy should be checked.

Keywords： horizontal preframe vertical line figure calculate adjust check

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Influence of pore structure on biologically activated carbon performance and biofilm microbial characteristics

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1419-1

Abstract:

• Pore structure affects biologically activated carbon performance.

Keywords： Granular activated carbon Biologically activated carbon filter Bacterial community structure Porestructure

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Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4, Pages 371-382 doi: 10.1007/s11465-013-0279-1

Abstract:

The atomic lattice structure of perfect single-layer graphene that can actually be regarded as a kindof hierarchical fractal structure from the perspective of fractal geometry was studied for the firstThree novel and special discoveries on hierarchical fractal structure and sets were unveiled upon examinationThe interior fractal-type structure was discovered to be the fifth space-filling curve from physicalA fundamental example of a multi-fractal structure was also presented.

Keywords： hierarchical fractal structure fractal dimension the fifth space-filling curve multi-fractal structure

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Floating forest: A novel breakwater-windbreak structure against wind and wave hazards

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1111-1127 doi: 10.1007/s11709-021-0757-1

Abstract: A novel floating breakwater-windbreak structure (floating forest) has been designed for the protectionThe modular arch-shaped concrete structure is positioned perpendicularly to the direction of the prevailingThe structure below the water surface acts as a porous breakwater with wave scattering capability.

Keywords： floating structure breakwater windbreak hydrodynamic CFD

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Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8, Pages 1268-1280 doi: 10.1007/s11705-022-2143-5

Abstract: The micro-nano composite structure can endow separation membranes with special surface properties, butusing this method, a bicontinuous porous microfiltration membrane with robust micro-nano composite structureThe formation mechanism of the micro-nano composite structure was proposed.

Keywords： atomization nonsolvent induced phase separation bicontinuous porous structure micro-nano compositestructure oil-water separation

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Smart optical-fiber structure monitoring based on granular computing

Guan LU, Dakai LIANG,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4, Pages 462-465 doi: 10.1007/s11465-009-0073-2

Abstract: self-diagnosing system in health monitoring has become an important direction of smart materials and structurethe requirement of damage detection by analyzing digital signals and character signals of the smart structurepaper investigates an optic fiber smart layer and presents a method for realizing optic fiber smart structureAfter the analysis, it is presumed that optic fiber smart structure monitoring based on granular computation

Keywords： smart material and structure GrC optical fiber sensor rough set clustering algorithm

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Automated classification of civil structure defects based on convolutional neural network

Pierclaudio SAVINO, Francesco TONDOLO

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2, Pages 305-317 doi: 10.1007/s11709-021-0725-9

Abstract: Today, the most commonly used civil infrastructure inspection method is based on a visual assessment conducted by certified inspectors following prescribed protocols. However, the increase in aggressive environmental and load conditions, coupled with the achievement of many structures of the life-cycle end, has highlighted the need to automate damage identification and satisfy the number of structures that need to be inspected. To overcome this challenge, this paper presents a method for automating concrete damage classification using a deep convolutional neural network. The convolutional neural network was designed after an experimental investigation of a wide number of pretrained networks, applying the transfer-learning technique. Training and validation were conducted using a database built with 1352 images balanced between “undamaged”, “cracked”, and “delaminated” concrete surfaces. To increase the network robustness compared to images in real-world situations, different image configurations have been collected from the Internet and on-field bridge inspections. The GoogLeNet model, with the highest validation accuracy of approximately 94%, was selected as the most suitable network for concrete damage classification. The results confirm that the proposed model can correctly classify images from real concrete surfaces of bridges, tunnels, and pavement, resulting in an effective alternative to the current visual inspection techniques.

Keywords： concrete structure infrastructures visual inspection convolutional neural network artificial intelligence

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Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 897-908 doi: 10.1007/s11705-021-2127-x

Abstract: Catalyst particle shapes and pore structure engineering are crucial for alleviating internal diffusionThe catalyst particle shapes primarily alter the average HDS/HDN reaction rate to adjust the HDS/HDNdiameter and the porosity of catalyst particles primarily alter the surface HDS/HDN reaction rate to adjust

Keywords： hydrodesulfurization hydrodenitrogenation particle shape pore structure

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Vibration analysis of blade-disc coupled structure of compressor

WANG Chunjie, SONG Shunguang, ZONG Xiao

Frontiers in Energy 2008, Volume 2, Issue 3, Pages 302-305 doi: 10.1007/s11708-008-0064-8

Abstract: While a 3D assembly model of blade-disc structure was established, a finite element model for calculatingThe vibration characteristics of the blade-disc coupling structure was calculated and analyzed usingThe modeling experiment shows that this method is feasible for analyzing the rabbet assembly structure

Keywords： blade-disc coupling assembly experiment vibration blade-disc structure

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Construction of digital 3D magic-cube organization structure for innovation-driven manufacturing

Frontiers of Engineering Management Pages 373-390 doi: 10.1007/s42524-022-0237-x

Abstract: This study proposes a three-dimensional (3D) magic-cube organizational structure, considering the product

Keywords： innovation manufacturing 3D magic-cube organization structure coordination

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PID neural network control of a membrane structure inflation system

Qiushuang LIU, Xiaoli XU

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 418-422 doi: 10.1007/s11465-010-0117-7

Abstract: The PID controller is used to control a nonlinear time-variant membrane structure inflation system.Results show that the neural network PID controller can adapt to the changes in system structure parameters

Keywords： PID neural network membrane structure

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Modeling of specific structure crystallization coupling with dissolution

Yuanhui JI, Hongliang QIAN, Chang LIU, Xiaohua LU, Xin FENG, Xiaoyan JI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1, Pages 52-56 doi: 10.1007/s11705-009-0301-7

Abstract: In this paper, the research framework for specific structure crystallization modeling has been proposedOur investigations show that the mechanisms of complex structure formation and microphase transitionformation mechanism of the porous KCl has been analyzed, which may provide a reference for the porous structure

Keywords： structure crystallization activity coefficient reference KCl dissolution