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  • Trans Tech Publications, Ltd.  (31)
  • 1
    Online Resource
    Online Resource
    Design and Optimization of Vertical Axis Wind Turbine
    Trans Tech Publications, Ltd. ; 2012
    In:  Applied Mechanics and Materials Vol. 150 ( 2012-1), p. 148-153
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 150 ( 2012-1), p. 148-153
    Abstract: Wind power is a clean and renewable energy, and more and more countries in the world attach great importance to it and promote the development of the wind power industry. The current situation of wind turbines at home and abroad, the development, types, and characteristics were analyzed. The structural design of vertical axis wind turbine (VAWT) and aerodynamic theory of rotor blade were briefly introduced, the characteristic parameters in VAWT design were presented in this paper. Using finite element analysis method, the spindle which is the crucial component of VAWT under the extreme wind load was analyzed, and the corresponding results were obtained. Finally the wall thickness and the structure of spindle were improved and optimized to satisfy the engineering requirements of spindle.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.150
    DOI: 10.4028/www.scientific.net/AMM.150.148
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2251882-4
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  • 2
    Online Resource
    Online Resource
    Optimal Design of Bogie Parameters Determination Test Bench Gantry Framework Based on SolidWorks/Simulation
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 199-200 ( 2011-2), p. 1253-1256
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 199-200 ( 2011-2), p. 1253-1256
    Abstract: On the basis of SolidWorks/Simulation FEA module, statics analysis and design optimization for bogie parameters determination test bench gantry framework are researched in this paper. Taking the optimization design of gantry framework main beam for example, an optimal mathematic model is established, the optimization goal is to reduce the quality of the main beam, and the constraints are displacement and stress. Simultaneously, the model is simulated by the SolidWorks/Simulation software. Compared with the initial design, the results show that the quality of main beam is reduced by 12.69%, the quality optimization goal of the gantry framework test bed is realized. Meanwhile, it not only reduced the design and manufacturing cost, but also enhanced the design efficiency.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.199-200
    DOI: 10.4028/www.scientific.net/AMR.199-200.1253
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2265002-7
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  • 3
    Online Resource
    Online Resource
    Preparation and Property of Mn〈sub〉3〈/sub〉B〈sub〉7〈/sub〉O〈sub〉13〈/sub〉Cl Microwave Attenuation Powders
    Trans Tech Publications, Ltd. ; 2014
    In:  Advanced Materials Research Vol. 1081 ( 2014-12), p. 156-160
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 1081 ( 2014-12), p. 156-160
    Abstract: Mn 3 B 7 O 13 Cl nanopowders were prepared by sol-gel process. X-ray diffraction (XRD) and Transmission electron microscope (TEM) were utilized to characterize the structure, shape, size of the obtained products. Mn 3 B 7 O 13 Cl powder was sintered into a ceramic disk having a diameter of 20mm by Spark Plasma Sintering (SPS). The formation of Mn 3 B 7 O 13 Cl nanoparticles and the dielectric properties of Mn 3 B 7 O 13 Cl were discussed. The results show that Mn 3 B 7 O 13 Cl nanopowders which was obtained after xerogel roasted at 550°C are uniform. The size of the average particle is about 50nm. Mn 3 B 7 O 13 Cl ceramic disk has a low dielectric constant and high dielectric loss. It is believed that there is a good application prospect in the field of microwave attenuation.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.1081
    DOI: 10.4028/www.scientific.net/AMR.1081.156
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
    detail.hit.zdb_id: 2265002-7
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  • 4
    Online Resource
    Online Resource
    Photocatalytic Degradation of Methylene Blue Aqueous Solution under Visible Light Irradiation by Using N-Doped Titanium Dioxide
    Trans Tech Publications, Ltd. ; 2007
    In:  Key Engineering Materials Vol. 336-338 ( 2007-4), p. 1972-1975
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 336-338 ( 2007-4), p. 1972-1975
    Abstract: N-doped TiO2 powders with high photocatalytic activity under visible-light irradiation have been prepared by calcining anatase nanocrystalline TiO2 powders and guanidine hydrochloride at 350 °C, 450 °C, 550 °C and 650 °C with the holding time ranged from 1.5 h to 3 h, respectively. The guanidine hydrochloride content was varied from 1 to 6 M for the experiments. XRD patterns indicate that all the powders are anatase crystalline phase. The specific surface area is 25~45 m2/g measured by BET method. XPS results show that N atoms were incorporated into the lattice of TiO2 and the amount of N doped in TiO2 is reached up to 8.26 at%. UV-Vis absorption spectra show that the absorption edge of the synthesized N-doped TiO2 powders, calcined at 350 °C for 2.5 h, has red-shifted well into visible region up to 700 nm. Degradation of methylene blue (MB) aqueous solution has been investigated by UV-Vis light spectrophotometer. The 400-mL 10 mg/L aqueous solution of methylene blue could be degraded completely with 4 g N-doped TiO2 within 4.5 h of visible light irradiation.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.336-338
    DOI: 10.4028/www.scientific.net/KEM.336-338.1972
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2007
    detail.hit.zdb_id: 2073306-9
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  • 5
    Online Resource
    Online Resource
    Preparation of N-Doped TiO〈sub〉2〈/sub〉 Photocatalytic Paint and its Sterilization Performance under Visible-Light Irradiation
    Trans Tech Publications, Ltd. ; 2007
    In:  Key Engineering Materials Vol. 336-338 ( 2007-4), p. 1964-1967
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 336-338 ( 2007-4), p. 1964-1967
    Abstract: A new functional photocatalytic paint was prepared by adding N-doped nanocrystalline anatase TiO2 powders into self-engineered oxidation resistance latex paint system. The property of the UV-Vis light absorbance of the paint was characterized. The effects of the amount, types, and the introducing methods of the TiO2 in the paints on the behavior of the UV absorption, photocatalytic properties of the paint were systematically investigated. UV-Vis absorption spectra reveal that the ultraviolet light can strongly be absorbed by the paints. The absorption edge of the N-doped nanocrystalline anatase powders modified paint has red-shifted to visible light region. The colony counting method is used to study its sterilization performance under visible light irradiation. The sterilization experiments show that the rate of sterilizing staphylococcal bacteria by the N-doped TiO2 modified paint can exceed more than 99% after the paint has been irradiated by the visible light for 2 to 4 hours.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.336-338
    DOI: 10.4028/www.scientific.net/KEM.336-338.1964
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2007
    detail.hit.zdb_id: 2073306-9
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  • 6
    Online Resource
    Online Resource
    Preparation of Nanosize Anatase TiO〈sub〉2〈/sub〉 Powders by Hydrothermal Synthesis
    Trans Tech Publications, Ltd. ; 2007
    In:  Key Engineering Materials Vol. 336-338 ( 2007-4), p. 2017-2020
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 336-338 ( 2007-4), p. 2017-2020
    Abstract: Nanosize anatase TiO2 powders have been synthesized by hydrothermal synthesis by using technical grade TiOSO4 as precursor and urea as precipitating agent. The initial pressure of the reaction system was set at 6 MPa. Stirring speed was fixed at 300r/min. The reaction system reacted at the temperature ranged from 110 to 150°C for holding 2hrs to 8hrs and the concentration of the precursor was ranged from 0.25M to1.5M. XRD patterns show that the synthesized powders are in the form of anatase phase. Calculated grain size is ranged from 6.7 to 8.9nm by Scherrer method from the line broadening of the (101) diffraction peak of anatase. The specific surface area of the powders synthesized under different conditions is ranged from 124 to 240m2/g. The grain size of the powders increases with the increase of the reaction temperature, holding time and precursor concentration, respectively. The specific surface area decreases with the increase of reaction temperature and holding time, and does not obviously change with the change of precursor concentration when the concentration of the precursor is less than 1M. However, when the concentration is higher than 1M, the specific surface area will decrease quickly with the increase of the precursor concentration. XRD and DSC-TG analysis shows that the synthesized anatase TiO2 will begin to transform to rutile TiO2 at about 840°C. When heated to 1000°C for holding 1h, the anatase powders will transform to rutile completely.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.336-338
    DOI: 10.4028/www.scientific.net/KEM.336-338.2017
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2007
    detail.hit.zdb_id: 2073306-9
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  • 7
    Online Resource
    Online Resource
    The Forward Kinematics Solution of Track Irregularity Simulator
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 503-504 ( 2012-4), p. 1100-1103
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 503-504 ( 2012-4), p. 1100-1103
    Abstract: By means of the bionic optimization method PSO, the particle swarm displacement tracking model was established by this paper according to the displacement constraint conditions of the track irregularity simulator actuators, which took the difference between the given length of the forward kinematics solution and the inverse kinematics solution as the optimization objective. The population global searching and optimization was carried out through the PSO toolbox based on matlab and the compiling optimization function procedure, in order to realize the dynamic tracking of the position parameters and the forward kinematics solution of the 6-Dof loading platform. The accuracy of forward kinematics solution model and the PSO procedure discussed in this paper was proved by the example.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.503-504
    DOI: 10.4028/www.scientific.net/AMR.503-504.1100
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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  • 8
    Online Resource
    Online Resource
    Expected Value Model for Vehicle Detection Station Location Problem with Random Detection Demand and Different Transportation Cost
    Trans Tech Publications, Ltd. ; 2011
    In:  Applied Mechanics and Materials Vol. 97-98 ( 2011-9), p. 542-545
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 97-98 ( 2011-9), p. 542-545
    Abstract: Vehicle detection station is the premise of planning other issues of it. In order to reasonably and practically solve the actual location problem of vehicle detection station, considering the influence of the changing of the number of detection vehicles and the different area road conditions, the expected value issue for vehicle detection station location problem with random detection demand and different transportation cost is introduced. In addition, genetic algorithm based on stochastic simulation is used to solve the established expected value model. The above study provides some guidelines for the actual decision-making of vehicle detection station.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.97-98
    DOI: 10.4028/www.scientific.net/AMM.97-98.542
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2251882-4
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  • 9
    Online Resource
    Online Resource
    Visible-Light Activity of N-Doped TiO〈sub〉2〈/sub〉 Powders and their Applications
    Trans Tech Publications, Ltd. ; 2007
    In:  Materials Science Forum Vol. 544-545 ( 2007-5), p. 167-170
    Details
    In: Materials Science Forum, Trans Tech Publications, Ltd., Vol. 544-545 ( 2007-5), p. 167-170
    Abstract: Nitrogen-doped TiO2 has been prepared by calcining technical grade guanidine hydrochloride and commercial anatase TiO2 powders. XRD patterns indicate that the prepared powders are composed of anatase. XPS results show that N atoms have been incorporated into the lattice of anatase. UV-Vis reflectance spectra show that the light absorption of the synthesized N-doped anatase powders has red-shifted well into visible-light region. Degradation of methylene blue (MB) aqueous solution by N-doped anatase has been investigated by UV-Vis light spectrophotometer. The 400-mL 10 mg/L aqueous solution of MB could be degraded with 4 g N-doped TiO2 within 4.5 hrs of visible light irradiation. Photocatalytic paint was prepared by adding the synthesized N-doped nanocrystalline anatase TiO2 powders into self-engineered oxidation resistance latex paint system. The effects of the amount and types of the TiO2 in the paints on the sterilization were systematically investigated. The colony counting method was used to study its sterilization performance under visible light irradiation. The sterilization experiments show that the rate of sterilizing E. coli by the N-doped TiO2 modified paint can exceed more than 99% after irradiation by the visible light for 2 to 4 hours.
    Type of Medium: Online Resource
    ISSN: 1662-9752
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/MSF.544-545
    DOI: 10.4028/www.scientific.net/MSF.544-545.167
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2007
    detail.hit.zdb_id: 2047372-2
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  • 10
    Online Resource
    Online Resource
    Research of Test Method for the Bogie Rotary Torque
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 503-504 ( 2012-4), p. 1045-1049
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 503-504 ( 2012-4), p. 1045-1049
    Abstract: Rotary torque is one of the important parameters of the bogie. A scheme of the rotary torque test for the bogie was put forward, and the homogeneous matrix based on the Euler angle was introduced, the model of inverse pose of the slewing platform was built. Also, it implemented the real-time solution by means of simulink, and fitted the curve of hydraulic cylinder expansion amount and time by use of the MATLAB curve fitting toolbox. The method that took the motion curves of the actuators as the control input is put forward, which was of great value and laid the foundation for the test of rotary torque.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.503-504
    DOI: 10.4028/www.scientific.net/AMR.503-504.1045
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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