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  • Trans Tech Publications, Ltd.  (278)
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  • Trans Tech Publications, Ltd.  (278)
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  • 1
    Online Resource
    Online Resource
    W-Nb Co-Doped VO〈sub〉2〈/sub〉 Films Realizing near Room-Temperature Transition and Satisfactory Thermochromic Performance for Smart Window
    Trans Tech Publications, Ltd. ; 2022
    In:  Materials Science Forum Vol. 1070 ( 2022-10-13), p. 145-155
    Details
    In: Materials Science Forum, Trans Tech Publications, Ltd., Vol. 1070 ( 2022-10-13), p. 145-155
    Abstract: The W-Nb co-doped VO 2 films are prepared through hydrothermal method. The effects of the Nb and W dopants are investigated respectively on the phase transition temperature ( θ c ) and optical properties of VO 2 by keeping the concentration of partner dopant at 1.0 at.%. The Nb doping induces a reduction of θ c at a rate of ~ -13.0 °C per at.% Nb as Nb is less than ~1.5 at.%. For more than 1.5 at.% Nb, the θ c shows a slight increase from ~23.0 °C. The W doping leads to a linear decrease of θ c with a rate of ~ -17.2 °C per at.% W, more effective in reducing θ c than the Nb dopant. However, the heavy W doping results in more serious deterioration of the solar energy modulation ( ΔT sol ) than the Nb doping. Therefore, taking use of the complementary advantages of W and Nb dopants, the 1.0 at.% W + 1.5 at.% Nb co-doped VO 2 realizes the room-temperature transition at 23.0 °C with a satisfactory ΔT sol of ~9.6%, much better than the 1.5 at.% W + 1.0 at.% Nb co-doped which has a θ c of ~22.1 °C and ΔT sol of ~5.3%. This work demonstrates the W-Nb co-doping is an effective doping formula in improving the performance of VO 2 for smart window applications.
    Type of Medium: Online Resource
    ISSN: 1662-9752
    URL: Issue
    URL: Article
    DOI: 10.4028/v-8999w5
    DOI: 10.4028/p-rp934x
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2022
    detail.hit.zdb_id: 2047372-2
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  • 2
    Online Resource
    Online Resource
    Design of Solar Tracker Based on Image Sensor
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 562-564 ( 2012-8), p. 1226-1229
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 562-564 ( 2012-8), p. 1226-1229
    Abstract: This article describes a detection, tracking control method. The image sensor is the core components of the system. The microcontroller determine the position of the sun to track, store location information, and offer protection measures implemented on the system in inclement weather. The system has high accuracy, good adaptability and other characteristics.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.562-564
    DOI: 10.4028/www.scientific.net/AMR.562-564.1226
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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    Online Resource
  • 3
    Online Resource
    Online Resource
    A Simplified Method to Obtain Subway Vibration Load Based on Analysis in Frequency Domain
    Trans Tech Publications, Ltd. ; 2012
    In:  Applied Mechanics and Materials Vol. 256-259 ( 2012-12), p. 1195-1200
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 256-259 ( 2012-12), p. 1195-1200
    Abstract: To obtain reasonable subway vibration load is the key to many subway vibration problems. This paper uses a simplified method to determine subway vibration load in frequency domain analysis, based on ground vibration test induced by subway traveling and numerical simulation of soil-subway model. The operating steps are explained and one example for calculating subway vibration load is given. The result shows that this method is a certain degree of effective in analysis of ground vibration problems, since that it relies on ground vibration test. The operating steps of this method are simple, and also the method can reflect characteristic of randomness of subway vibration.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.256-259
    DOI: 10.4028/www.scientific.net/AMM.256-259.1195
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2251882-4
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  • 4
    Online Resource
    Online Resource
    The Simulation Research of Damping Characteristics for the Underwater Vehicle Moving under or Exceeding Water
    Trans Tech Publications, Ltd. ; 2013
    In:  Applied Mechanics and Materials Vol. 432 ( 2013-9), p. 281-287
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 432 ( 2013-9), p. 281-287
    Abstract: The vehicle may vibrate when it moves under or exceeding water. This vibration will interact with the flow filed around to form a fluid-structure interactiondynamics system. In this paper, the numerical simulation of a cylinder in the process of moving under or exceeding water with ABAQUS and FLUENT is presented. Simultaneously, the first three damping ratio of the system are obtained by damping identification. For different density, viscosity and velocity of water, model separately to get the impact of each factor. Besides, the continuous process of exceeding water has been discretized to obtaindifferent oscillating curvesat different positions with respect to the water,and then the change of the damping ratio is presented. Thus the damping characteristics of the system in the water-exit process have been obtained approximately.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.432
    DOI: 10.4028/www.scientific.net/AMM.432.281
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2251882-4
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  • 5
    Online Resource
    Online Resource
    Grey Prediction on Sheared Edge Quality in Precision Blanking Process for Micro IT Parts
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 266 ( 2011-6), p. 122-125
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 266 ( 2011-6), p. 122-125
    Abstract: Sheared edge quality of micro IT parts is an important standard to evaluate product quality. In this paper, a prediction model of sheared edge quality based on grey prediction is studied. By mapping the stroke and the burr width to be the time increment and the eigenvalue of grey system, the grey prediction model was established. The dynamic regularity of burr in actual production was attained from the precision blanking experiment and the prediction of burr width was performed. The results show that the model can predict burr width accurately and needs less sampling data. Thus, it is fit for the requirement of manufacturing.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.266
    DOI: 10.4028/www.scientific.net/AMR.266.122
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2265002-7
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  • 6
    Online Resource
    Online Resource
    Enhanced Electromagnetic Absorption of Flake Carbonyl Iron/Reduced Graphene Oxide Composites
    Trans Tech Publications, Ltd. ; 2022
    In:  Materials Science Forum Vol. 1070 ( 2022-10-13), p. 45-54
    Details
    In: Materials Science Forum, Trans Tech Publications, Ltd., Vol. 1070 ( 2022-10-13), p. 45-54
    Abstract: Carbonyl iron is an excellent microwave absorption material. However, the high density limits its application in lightweight microwave absorbing. In this study, flake carbonyl iron (FCI) was prepared by high-energy ball milling, and mixed with TPU to prepare the TPU/FCI composites. The large shape anisotropy of FCI makes the TPU/FCI samples exhibit higher permittivity and permeability, and consequently better microwave absorption performance than TPU/SCI (spherical carbonyl iron). Then, rGO was added into the TPU/FCI composites. The permittivity of the TPU/FCI/rGO composites is significantly enhanced by a few amount of rGO (less than 0.5 wt.%). As a result, the TPU/FCI/rGO sample with m FCI : m TPU = 3:10 and 0.5 wt.% rGO consumes only half of FCI that the TPU/FCI sample with m FCI : m TPU = 6:10 uses, and shows much better microwave absorbing performance than this TPU/FCI sample, that the minimum reflection loss reaches-68.3 dB (at 3.4 mm) and the effective absorption bandwidth is up to 5.9 GHz (at 1.5 mm). The TPU/FCI/rGO materials demonstrate promising application in light-weight high-efficient microwave attenuation.
    Type of Medium: Online Resource
    ISSN: 1662-9752
    URL: Issue
    URL: Article
    DOI: 10.4028/v-8999w5
    DOI: 10.4028/p-6b3t8n
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2022
    detail.hit.zdb_id: 2047372-2
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  • 7
    Online Resource
    Online Resource
    Development and Application of the Screw Separator
    Trans Tech Publications, Ltd. ; 2014
    In:  Advanced Materials Research Vol. 989-994 ( 2014-7), p. 23-26
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 989-994 ( 2014-7), p. 23-26
    Abstract: This article describes the research and development with the international advanced level of the screw separator, mainly used for the cleaner tailings fiber and the wastewater recycling and the use of stand-alone concentrated effect, into the plasma concentration of more than 0.5%, themaximum slurry concentration up to 60%, the device uses a unique control mechanism, without the power consumption will be able to achieve the automatic control of the plasma concentration, can efficiently remove moisture, recycled fiber, conservation of resources. 1Overview In pulping process,it will produce a certain amount of waste residue, also known as tailings. The tailings contain a large number of moisture content and fiber. Now, stacked tailings of many enterprises are in the outdoor. Severe pollution caused by a lot of stacked tailings, which don't do process.Loss of water and fiber caused great waste to the enterprise. To draw lessons from foreign advanced technology, it will design and develop the screw separator with advanced level at home and abroad, mainly used for the cleaner tailings fiber and the wastewater recycling. The current domestic pulp manufacturers don't do process tailings, direct discharge away, which is no processing equipment. So the development of the screw separator will fill the domestic blank.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.989-994
    DOI: 10.4028/www.scientific.net/AMR.989-994.23
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
    detail.hit.zdb_id: 2265002-7
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  • 8
    Online Resource
    Online Resource
    The Research and Design of a New Shield Cutter Wear Detection System
    Trans Tech Publications, Ltd. ; 2013
    In:  Advanced Materials Research Vol. 711 ( 2013-6), p. 381-384
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 711 ( 2013-6), p. 381-384
    Abstract: In this paper a new type shield cutter wear detection method based on ultrasonic thickness measurement theory was presented. Its working principle was introduced. Its hardware and software were designed. Compared with the existing detection methods, the new method is more accurate and more intuitive, and the method can also provide technical support for the project very well.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.711
    DOI: 10.4028/www.scientific.net/AMR.711.381
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2265002-7
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  • 9
    Online Resource
    Online Resource
    Structural Analysis and Design of Pre Heating Automotive Control System Based on AVR
    Trans Tech Publications, Ltd. ; 2013
    In:  Applied Mechanics and Materials Vol. 456 ( 2013-10), p. 595-598
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 456 ( 2013-10), p. 595-598
    Abstract: ATmega8 of AVR chip was used in the automobile pre-heating control system. Automotive pre-heated working principle was analyzed. The system of the pre-heater was designed and the hardware composition of the heating system, the structural features and the role of each module was introduced. It was expounded the process control including the heated air intake phase, to the oil phase, ignition phase and work phase. At last, the advantages and disadvantages of the pre-heater were introduced.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.456
    DOI: 10.4028/www.scientific.net/AMM.456.595
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2251882-4
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  • 10
    Online Resource
    Online Resource
    Research on Two Kinds of Parameter Identification Methods for Short-Term Time-Varying System
    Trans Tech Publications, Ltd. ; 2013
    In:  Applied Mechanics and Materials Vol. 344 ( 2013-7), p. 205-209
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 344 ( 2013-7), p. 205-209
    Abstract: In this paper, two kinds of time varying parameter identification methods which are called identification method of using broken line to approximate time varying parameter and identification algorithm with auto-regulation forgetting factor are studied. The two methods are used for short-term time-varying system parameter identification in simulations. According to the results of the simulations, the applicable conditions of the two kinds of identification methods are analyzed. The results of the simulations indicate the effectiveness of the two methods. Furthermore whether the two kinds of identification methods are sensitive to noise or not is studied by setting different noise levels in the simulations. Finally, experiments of a variable mass cylindrical shell are adopted to demonstrate the efficiency of the two kinds of time varying parameter identification methods.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.344
    DOI: 10.4028/www.scientific.net/AMM.344.205
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2251882-4
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