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Isogeometric analysis based on geometric reconstruction models

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 782-797 doi: 10.1007/s11465-021-0648-0

Abstract: represented by boundary polygons or point cloud and is embedded into a regular background grid, and a model reconstruction

Keywords： isogeometric analysis     reconstruction model     level set function     trimmed element     point cloud    

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Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 840-854 doi: 10.1007/s11465-021-0643-5

Abstract: Compared with the model in published literature, the proposed model has equal reconstruction effect in

Keywords： surface topography     fractal evaluation     fractal interpolation     reconstruction     composite    

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Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0731-1

Abstract: This study proposes a method of full-field and real-time strain reconstruction of an aero-engine blade

Keywords： aero-engine blade     displacement response     dynamic strain reconstruction     mode shape     strain gauge    

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Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 17-22 doi: 10.1007/s11465-008-0015-4

Abstract: To reconstruct the shape of the scatterer in elastic media, the authors deduce the Born approximation solution of the two-dimensional scattering problem, which includes the shape factor that embodies all information about the shape of the scatterer. Accordingly, the change in the shape of the scatterer only necessitates the number of the corresponding new shape factors. For a parallelogram void in a long Al rod, its shape factor can be obtained. In view of the definition of a characteristic function, the shape factor has a corresponding integral representation. Obviously, the shape factor can be considered as a Fourier transform of the characteristic function, which is reconstructed from the inverse Fourier transform. The integral equation is considered as the basic equation to reconstruct the shape of the scatterer. The identification of the geometrical character of a flaw is then given by the two dimensional inverse Born approximation in a low-frequency range. For the parallelogram void, a theoretical calculating identification is performed. At the same time, the numerical results are obtained by the finite element method.

Keywords： approximation     scatterer     scattering problem     information     inverse    

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The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4,   Pages 291-298 doi: 10.15302/J-FASE-2014033

Abstract: Thus, the Chinese government is strengthening research on improvement and reconstruction of the ecologicalIt is suggested that the reconstruction of landscape should be conducted by step by step regionalizationThe first level regionalization results of reconstruction of landscape are discussed.

Keywords： reconstruction of landscape     ecological system     the northwest area of China     science and technology action    

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Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 653-666 doi: 10.1007/s11709-018-0503-5

Abstract: Recent research about reconstruction methods mainly used the interpolation reconstruction of the fluctuatingpressure at the edge of the building, the work presented in this paper focuses on the extrapolation reconstructionThe studies show that it works well for not only interpolation reconstruction but also extrapolationreconstruction.different variogram, preliminary results suggest less time consumption and high efficiency in extrapolation reconstruction

Keywords： extrapolation reconstruction     proper orthogonal decomposition     Kriging method     von Kármán function     Hurst    

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A dynamic stiffness-based framework for harmonic input estimation and response reconstruction considering

Yixian LI; Limin SUN; Wang ZHU; Wei ZHANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 448-460 doi: 10.1007/s11709-022-0805-5

Abstract: In structural health monitoring (SHM), the measurement is point-wise but structures are continuous. Thus, input estimation has become a hot research subject with which the full-field structural response can be calculated with a finite element model (FEM). This paper proposes a framework based on the dynamic stiffness theory, to estimate harmonic input, reconstruct responses, and to localize damages from seriously deficient measurements. To begin, Fourier transform converts the dynamic equilibrium equation to an equivalent static one in the frequency domain, which is under-determined since the dimension of measurement vector is far less than the FEM-node number. The principal component analysis has been adopted to “compress” the under-determined equation, and formed an over-determined equation to estimate the unknown input. Then, inverse Fourier transform converts the estimated input in the frequency domain to the time domain. Applying this to the FEM can reconstruct the target responses. If a structure is damaged, the estimated nodal force can localize the damage. To improve the damage-detection accuracy, a multi-measurement-based indicator has been proposed. Numerical simulations have validated that the proposed framework can capably estimate input and reconstruct multi-types of full-field responses, and the damage indicator can localize minor damages even with the existence of noise.

Keywords： dynamic stiffness     principal component analysis     response reconstruction     damage localization     under-determined    

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Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: This paper provides an in-depth perspective of surface topography reconstruction for optical interferometric

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

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Ontological reconstruction of the clinical terminology of traditional Chinese medicine

Li Ma,Baoyan Liu,Qi Xie,Shusong Mao,Zhiwei Cui

Frontiers of Medicine 2014, Volume 8, Issue 3,   Pages 358-361 doi: 10.1007/s11684-014-0348-9

Abstract:

This study proposes the ontological reconstruction of the current clinical terminology of traditionalIt also provides an overview of preliminary work related to the said reconstruction, including the ontology-basedWe conclude that the ontological reconstruction of TCM clinical terminology provides a proper translation

Keywords： ontology     traditional Chinese medicine     clinical terminology    

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Principle and Method of Modern Agricultural Two-Dimension Optimization Engineering Experiment: A Case Study of Mu Us Sandy Land

Wang Yongsheng, Li Yuheng , Liu Yansui

Strategic Study of CAE 2019, Volume 21, Issue 2,   Pages 48-54 doi: 10.15302/J-SSCAE-2019.02.017

Abstract: Soil reconstruction with natural red clay or loess is an economical and ecological method for sandy landSandy soil oriented consolidation will provide scientific supporting for degraded land consolidationtechnonolgy system and a whole-chain land project management mechanism should be intensified through soilreconstruction, farmland building, and soil improvement from micro, meso, and macro level, respectively

Keywords： land consolidation     modern agriculture     soil reconstruction     crop optimized selection     Mu Us Sandy Land    

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Animage-based approach to the reconstruction of ancient architectures by extracting and arranging 3D

Divya Udayan J,HyungSeok KIM,Jee-In KIM

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 1,   Pages 12-27 doi: 10.1631/FITEE.1400141

Abstract: The objective of this research is the rapid reconstruction of ancient buildings of historical importanceIn this article, we consider the reconstruction of ancient Mughal architecture including the Taj MahalWe propose a modeling pipeline that makes an easy reconstruction possible using a single photograph takenThis approach is faster and more accurate than creating a model from scratch because the initial reconstruction

Keywords： Digital reconstruction     3D virtual world     3D spatial components     Vision and scene understanding    

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Three-dimensional reconstruction of light microscopy image sections: present and future

Yuzhen Wang,Rui Xu,Gaoxing Luo,Jun Wu

Frontiers of Medicine 2015, Volume 9, Issue 1,   Pages 30-45 doi: 10.1007/s11684-014-0337-z

Abstract:

Three-dimensional (3D) image reconstruction technologies can reveal previously hidden microstructuresorgans that have been serial-sectioned, dyed or stained, imaged, and segmented for 3D visualization. 3D reconstructionThis article outlines the most common methods for 3D tissue section reconstruction.We also note key steps in the reconstruction procedures, and highlight recent progress in the developmentof new reconstruction methods.

Keywords： microtomy     3D imaging     computer-assisted image processing     3D printing     tissue scaffold    

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Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 742-753 doi: 10.1007/s11709-021-0732-x

Abstract: Then, using the optimum PP addition, the bearing capacity of the soil was estimated through a seriesThe bearing capacity of sandy soil was improved by up to 30.7%.The ratio of the depth of the PP-reinforced soil to the diameter of the foundation model (H/D) of 1.25 could sufficiently strengthen sandy soil when the optimum PP ratio was used.capacity can be attributed to the chopped fibers in the PP and their multiaxial distribution in the soil

Keywords： shallow foundation     sandy soil     bearing capacity     soil improvement     pipe powder    

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Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 135-145 doi: 10.15302/J-FASE-2017143

Abstract: Knowledge of the spatial distribution of soil textural properties is important for determining soil moisturestorage and soil hydraulic transport properties.electromagnetic induction (EMI) mapping in low apparent electrical conductivity (EC ) soils at varying soilwater contents to capture time invariant properties such as soil texture.m × 50 m field included a subsurface gravelly patch in an otherwise homogeneous silt-loam alluvial soil

Keywords： soil electrical conductivity     soil texture mapping     temporal stability analysis    

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Application of three-dimensional digitalized reconstruction of latissimus dorsi myocutaneous flap

PEI Guoxian, ZHANG Yuanzhi, LI Jianwei, JIN Dan, CHEN Jionghao, LI Yanbing, ZHONG Shizhen

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 45-50 doi: 10.1007/s11684-008-0009-y

Abstract: Developments of digital technology and three-dimensional (3D) reconstruction allowed a precise description

Keywords： Digitized     digitized     software     three-dimensional     latissimus    

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Title Author Date Type Operation

Isogeometric analysis based on geometric reconstruction models

Journal Article

Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Journal Article

Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Journal Article

Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Journal Article

The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

Journal Article

Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Journal Article

A dynamic stiffness-based framework for harmonic input estimation and response reconstruction considering

Yixian LI; Limin SUN; Wang ZHU; Wei ZHANG

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Ontological reconstruction of the clinical terminology of traditional Chinese medicine

Li Ma,Baoyan Liu,Qi Xie,Shusong Mao,Zhiwei Cui

Journal Article

Principle and Method of Modern Agricultural Two-Dimension Optimization Engineering Experiment: A Case Study of Mu Us Sandy Land

Wang Yongsheng, Li Yuheng , Liu Yansui

Journal Article

Animage-based approach to the reconstruction of ancient architectures by extracting and arranging 3D

Divya Udayan J,HyungSeok KIM,Jee-In KIM

Journal Article

Three-dimensional reconstruction of light microscopy image sections: present and future

Yuzhen Wang,Rui Xu,Gaoxing Luo,Jun Wu

Journal Article

Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Journal Article

Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Journal Article

Application of three-dimensional digitalized reconstruction of latissimus dorsi myocutaneous flap

PEI Guoxian, ZHANG Yuanzhi, LI Jianwei, JIN Dan, CHEN Jionghao, LI Yanbing, ZHONG Shizhen

Journal Article