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- 저자 : Wenbin Zhao (검색결과 22 건)
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Research on Terrain Reconstruction of Twin Sequence Images in Lunar Exploration
Wang Wei,Zhao Wenbin,Zhao Zhengxu 보안공학연구지원센터 2014 International Journal of Signal Processing, Image Vol.7 No.5
The detectors are an important tool in deep space exploration; they can provide a large number of images which contain the ground environment information of celestial body. Bythree-dimensional reconstruction, terrain information can be extracted from these images, such as elevation data and texture data. This paper focuses on an adaptive terrain reconstruction for sequence image. A method, which calculate Binocular geometric model with matching measures of matching points and random sample consensus algorithm, is proposed. On the basic of this method, a densepoints matching method based on epipolar and homography constraints is presented. Besides the selection method of reconstruction image and the terrain reconstruction flow are discussed. The proposed adaptive terrain reconstruction satisfies the automation and real time requirement of some terrain reconstruction task, such as landing filed selection in detector landing, and is experiment and applied into sequence image of detector ChangE III’s landing camera, so as to ensure the safety of detector landing.
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Energy Simulation Framework Integrated with Green Manufacturing-Enabled PLM Information Model
Wenbin Zhao,정진우,노상도,John T. Yee 한국정밀공학회 2015 International Journal of Precision Engineering and Vol.2 No.3
Manufacturing industry has been facing tremendous pressure on environmental regulations like the reduction of pollutants, e.g., carbon dioxide. Limited natural resources have driven manufacturing companies to seek ways to reduce energy consumption for daily production. Manufacturing industry needs to consider sustainability for green manufacturing during the entire product life cycle. Conventional product life cycle management has not considered energy consumption with respect to product manufacturing. This paper proposes a new product life cycle management information model by considering the sustainability aspects. And a framework is presented to conduct energy simulation for analyzing the impact of sustainability on manufacturing. Analysis results show that the energy simulation using the sustainability-enabled product life cycle management information model could assist the manufacturing industry to save energy.
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Wenbin Jia,Lei Fang,Zhi Chen,Kai Zhao,Hongmei Huang,Lei Pan 한국섬유공학회 2020 Fibers and polymers Vol.21 No.6
Mechanical property prediction methods for composites are very important as theoretical tools for engineeringstructural design. To more accurately capture the transverse mechanical properties of composites, a multiscale analysismethod is developed in this paper. The multiscale analysis method includes three scales: (1) At the microscale, a microscopiccohesive model based on atomic potential energy is established for the interface; (2) At the mesoscale, a unit cell model isestablished for the fibre, matrix and interface; and (3) At the macroscale, the homogenization method, failure criteria anddamage degradation models are used for predicting the transverse mechanical properties. Subsequently, the transversemechanical properties and the damage evolution process are simulated with the multiscale analysis method. A comparisonbetween the simulations and experiments shows that the maximum error of the predicted transverse modulus and transversestrength is -4.45 % and -12.05 %, respectively. Finally, the effects of the interfacial strength on the macroscopic transversemechanical properties and the damage onset are analysed. The following conclusions are drawn from the simulation results:(1) The interfacial strength has a more significant effect on the transverse strength and ultimate strain than on the transversemodulus; (2) Decreasing the interfacial strength has a greater effect on the transverse modulus, strength and ultimate strainthan increasing the interfacial strength; and (3) The interfacial strength can change the damage onset.
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Wenbin Jia,Lei Fang,Zhi Chen,Kai Zhao,Hongmei Huang,Lei Pan 한국섬유공학회 2021 Fibers and polymers Vol.22 No.5
The carbon fiber/epoxy matrix interface plays an important role in the behavior and damage onset of unidirectionalfiber reinforced epoxy matrix composites and accurate modeling techniques are needed to study the effects of this complexregion on the composite response. In this work, a microscopic cohesive zone model (MCZM) based on atomic potentialenergy is established for the interface. A multiscale analysis method is proposed for predicting the transverse mechanicalproperties of unidirectional fiber composites: (1) At the microscale, MCZM is established for the interface; (2) At themesoscale, a unit cell model is established for the fiber, matrix and interface; and (3) At the macroscale, the homogenizationmethod, failure criteria and damage degradation models are used for predicting the transverse mechanical properties. Subsequently, the transverse mechanical properties and the damage evolution process are simulated with the multiscaleanalysis method. A comparison between the simulations and experiments shows that: (1) The maximum errors of thepredicted transverse modulus and transverse strength are -4.45 % and -1.28 %, respectively; and (2) MCZM can reflect thenonlinearity of epoxy matrix composite materials. Moreover, the effects of the interfacial strength on the macroscopictransverse mechanical properties and the damage onset are analysed. The simulation results show that: (1) The interfacialstrength has a more significant effect on the transverse strength and ultimate strain than on the transverse modulus; (2)Decreasing the interfacial strength has a greater effect on the transverse modulus, strength and ultimate strain than increasingthe interfacial strength; and (3) The interfacial strength can change the damage onset.
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제조시스템의 모델링과 시뮬레이션을 이용한 MES 도입방안 및 효과 사전 분석에 관한 연구
SHI TING,ZHAO WENBIN,이주형(Joohyeong Lee),박승현(Seunghyun Park),노상도(Sang Do Noh) (사)한국CDE학회 2014 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2014 No.2
Many manufacturing companies are investing in a lot of the information system to improve the competitiveness. To share information quickly between an enterprise"s information systems and support to decision-making, obtain and process information quickly and manage it efficiently and comprehensively on the production floor, Manufacturing Execution System (MES) has been introduced to the manufacturing companies. However, because each company has the different production environment, some companies haven’t obtained many effects after applying the MES system. So many minor enterprises do not to introduce the MES. This study was put forward the method of analysis the introduction methodology and effect of MES using modeling and simulation before an enterprise introduce the MES.
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Ling Fan,Zhao Chen,Wenbin Fu,Nenggui Xu,Jianhua Liu,Aiping Lu,Ziping Li,Shengyong Su,Taixiang Wu,Aihua Ou 사단법인약침학회 2016 Journal of Acupuncture & Meridian Studies Vol.9 No.5
This study aims to investigate the molecular mechanisms of acupuncture in the remission of depression. A depressive disorder model was induced by exposing Sprague–Dawley rats to chronic unpredictable stress. The rats were divided into five groups: healthy (blank group) and stressed rats (model group), and stressed rats treated with acupuncture (acupuncture group), riluzole (riluzole group), acupuncture combined with botulinum toxin A (BTX-A) injection (acupuncture+BTX-A group) or riluzole combined with BTX-A injection (riluzole+BTX-A group). Behavioral analysis showed significant differences in sucrose consumption, weight, and horizontal or vertical movements between the model and both the riluzole and acupuncture groups. No obvious differences between the riluzole+BTX-A and acupuncture+BTX-A groups were found. Moreover, no significance differences in glutamate content in the hippocampus were found among the riluzole+BTX-A, acupuncture+BTX-A and model groups (p>0.05). Western blots and reverse transcription polymerase chain reactions were employed to detect protein and mRNA expressions of VGLUT2, SNAP25, VAMP1, VAMP2, VAMP7, and syntaxin1; no obvious differences among the riluzole+BTX-A, acupuncture+BTX-A and model groups were found. These data suggest that soluble N-ethylmaleimide-sensitive factor attachment receptor proteins are involved in the remission of depression in rats treated with acupuncture.
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Chenjie Meng,Jiaming Zhao,Yuxiang Yin,Jun Luo,Lianying Zhao,Wenbin Jiang,Jianyong Feng 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4
Three-dimensional (3D) printing technology provides an effective alternative for tissue engineering scaffold. Inthis paper, a composite scaffold composed of polylactic acid (PLA) film and 3D printing scaffold was fabricated which couldprovide structural and mechanical support for tissue application. The effects of PLA film/3D printing composite scaffold onscaffold morphology, average diameter, pore diameter, mechanical properties, themal conductivity, electrical conductivity,and surface hydrophilicity were characterized. PLA film/3D printing composite scaffold had larger thickness, bettermechanical and thermal conductivity properties in comparison with pure PLA film and 3D printed scaffold. These resultssuggested that composite scaffold with relatively good overall performance could be a potential candidate for tissueengineering application.
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Guo Huilin,Yu Tingting,Zhao Lei,Qian Jun,Yu Jiahe,Zhang Yu,Teng Yongyue,Zhu Chunshui,Yang Tao,Chen Wenbin,Gong Picheng,Jiang Cuishuang,Gao Changfei,Yang Bing,Yang Chenyu 한국탄소학회 2023 Carbon Letters Vol.33 No.3
In this study, a bipolar visible light responsive photocatalytic fuel cell (PFC) was constructed by loading a Z-scheme g-C3N4/carbon black/BiOBr and a Ti3C2/MoS2 Schottky heterojunction on the carbon brush to prepare the photoanode and photocathode, respectively. It greatly improved the electron transfer and achieved efficient degradation of organic pollutants such as antibiotics and dyes simultaneously in two chambers of the PFC system. The Z-scheme g-C3N4/carbon black/BiOBr formed by adding highly conductive carbon black to g-C3N4/BiOBr not only effectively separates the photogenerated carriers, but also simultaneously retains the high reduction of the conduction band of g-C3N4 and the high oxidation of the valence band of BiOBr, improving the photocatalytic performance. The exceptional performance of Ti3C2/MoS2 Schottky heterojunction originated from the superior electrical conductivity of Ti3C2 MXene, which facilitated the separation of photogenerated electron–hole pairs. Meanwhile, the synergistic effect of the two photoelectrodes further improved the photocatalytic performance of the PFC system, with degradation rates of 90.9% and 99.9% for 50 mg L−1 tetracycline hydrochloride (TCH) and 50 mg L−1 rhodamine-B (RhB), respectively, within 180 min. In addition, it was found that the PFC also exhibited excellent pollutant degradation rates under dark conditions (79.7%, TCH and 97.9%, RhB). This novel pollutant degradation system is expected to provide a new idea for efficient degradation of multiple pollutant simultaneously even in the dark.
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