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  • Unknown  (11)
  • 2010-2014  (11)
  • 1
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2014
    In:  Applied Mechanics and Materials Vol. 556-562 ( 2014-5), p. 2962-2965
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 556-562 ( 2014-5), p. 2962-2965
    Abstract: As a result of the trend towards lightweight construction in manufacturing, there has been a significant increase in the use of clinched joints in engineering structures and components. Mechanical structures assembled by clinching are expected to possess a high damping capacity. The aim of this paper is to provide an experimental measurement technique for the investigation of the forced vibration behavior of clinched joints. The dynamic test software and the data acquisition hardware were used in the experimental measurement of the dynamic response of the clinched joints. The frequency response functions of the clinched joints of different clinching point number were measured and compared.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
    detail.hit.zdb_id: 2251882-4
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  • 2
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2014
    In:  Advanced Materials Research Vol. 1030-1032 ( 2014-9), p. 1242-1246
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 1030-1032 ( 2014-9), p. 1242-1246
    Abstract: Engine bench test research has been done on a JL4JB1 diesel engine fueled with compressed natural gas (CNG), and the power performance, load performance and universal performance were obtained, analyzing the performance changing regulations of CNG engine. The results indicate that the maximum torque turns up at the medium speed when the engine operates at power performance points, and the minimum brake specific gas consumption (BSGC) also comes up at medium speed. When the rotating speed keeps constant, BSGC decreases with the torque increasing, and decreasing largely at small load while a little at high load. From the universal performance curve of CNG engine, we can know that the minimum BSGC is 194g/kW·h.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
    detail.hit.zdb_id: 2265002-7
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  • 3
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 557-559 ( 2012-7), p. 947-951
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 557-559 ( 2012-7), p. 947-951
    Abstract: The properties of raw constant viscosity natural rubber were measured using a rubber processing analyzer. The results show that the rubber processing analyzer can characterize well the effect of viscosity stabilizer on the dynamic mechanical properties of raw constant viscosity rubber by applied strain sweep or frequency sweep. In linear viscoelastic region, the increment of the dynamic torque S’ of the constant viscosity natural rubber prepared with hydroxylamine hydrochloride decreases with the increase in the level of hydroxylamine hydrochloride . In the range of low frequency, the increment of the dynamic modulus G’ of constant viscosity natural rubber prepared with hydroxylamine hydrochloride is obvious lower than those of natural rubber and constant viscosity natural rubber prepared with aniline. G’ of the constant viscosity natural rubber prepared with aniline is just only a little higher than that of natural rubber. Hydroxylamine hydrochloride and aniline can decrease the molecular weight of rubber, and change the molecular weight distribution. The dynamical properties of constant viscosity natural rubber are dependent on the molecular weight and the molecular weight distribution.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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  • 4
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2013
    In:  Applied Mechanics and Materials Vol. 357-360 ( 2013-8), p. 2366-2370
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 357-360 ( 2013-8), p. 2366-2370
    Abstract: Since Lubuge hydropower station began to introduce the project management system, it has been greatly contributed to the efficiency of domestic hydropower project management. But the traditional and extensive management method is usually used at present. With the rapid development of computer technology, information technology, network and communications technology and their widely application in the information management for hydropower construcion, the information management process of hydropower project is significantly accelerated. From the gridding management theory in urban management system, based on the traditional management means, the concept and principle of gridding management theory is introduced and applied in the management for hydropower construcion, in which all items of hydropower project are worked as research subjects with the contract as a link so that the management level is more meticulous and the management objects are more precise. The whole spatial grid of hydropower construction is subdivided into a grid-based unit as the smallest unit and the method of full information is used to complete the refined management of grid units with their various attributes such as contract attribute, progress properties, investment properties, cost attributes, security attributes. The purpose is to achieve a refinement of construction management for hydropower project by means of grid-based meticulous management.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    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
    Trans Tech Publications, Ltd. ; 2012
    In:  Applied Mechanics and Materials Vol. 271-272 ( 2012-12), p. 715-719
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 271-272 ( 2012-12), p. 715-719
    Abstract: This paper designs an excitation servo hydraulic cylinder which uses clearance seal and hydrostatic supporting technology for high-speed railway subgrade dynamic response in-situ test system. It puts forward a structure with dynamic pressure chamber and static pressure chamber and calculates the main parameters of the cylinder. The paper briefly introduces the principle of hydrostatic supporting and analyzes the flow characteristics of the hydrostatic supporting oil chamber by simulation based on Fluent.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2251882-4
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  • 6
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2013
    In:  Applied Mechanics and Materials Vol. 339 ( 2013-7), p. 38-44
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 339 ( 2013-7), p. 38-44
    Abstract: A road grade recognition method based on longitudinal acceleration was proposed after longitudinal dynamics analysis. The method based on longitudinal dynamics utilized a real-time engine output torque signal and the real-time vehicle speed signal to calculate road grade. The result of simulation and the vehicle field test showed that the method based on existing vehicle sensors was low cost, simple and feasible, it could identify road grade.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2251882-4
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  • 7
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 233-235 ( 2011-5), p. 1708-1713
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 233-235 ( 2011-5), p. 1708-1713
    Abstract: This article demonstrates the design and industrial operation results of the ethylbenzene(EB) production technology from FCC dry gas by a combination of gas-phase alkylation and liquid-phase transalkylation, developed and commercialized by Dalian Institute of Chemical Physics (DICP), CAS. Based on the high active modified ZSM-5/ZSM-11 co-crystalline zeolite alkylation catalyst and modified β zeolite transalkylation catalyst, both the alkylation and transalkylation reactions are performed under much milder conditions, resulting in low energy cost and low content of xylenes impurities in the EB product. Also, the novel process for EB production, developed by DICP recently, through alkylation of dilute ethylene with gas-liquid mixed phase benzene and transalkylation feed is optimized. The results show that the transalkylation feed addition into the middle-lower part of the reactor improves the EB selectivity from about 90% to more than 99%, and the alkylation and transalkylation reactions are unified into a single reactor. Moreover, the alkylation reaction temperature decreases from more than 320 °C to about 170 °C, and the content of the xylenes impurities in the EB product is further decreased to less than 100 ppm.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2265002-7
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  • 8
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 550-553 ( 2012-7), p. 296-300
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 550-553 ( 2012-7), p. 296-300
    Abstract: Polymerization of β-pinene was investigated in the presence of various Keggin phosphotungstates. The experiments show that cetyltrimethylammonium phosphotungstate with molar ratio of cetyltrimethylammonium bromide to phosphotungstatic acid equal to 0.5 indicate efficient catalytic performance for the polymerization of β-pinene. The catalyst was easily removed from reaction mixture by filtration. Therefore, a clean and environmental friendly strategy for synthesis of terpene resin is developed.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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  • 9
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2014
    In:  Applied Mechanics and Materials Vol. 571-572 ( 2014-6), p. 747-752
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 571-572 ( 2014-6), p. 747-752
    Abstract: The visual defects of the polymer polaroid have a direct and serious influence on the quality of TFT-LCD panels. A variety of image detection systems have been proposed and widely used by the manufacturers of polaroid and panels in order to detect the visual defects at the earliest possible stage in the production process. Some slight visual defects, however, are barely visible in the images acquired by a camera when under a common illumination condition. In order to deal with this problem, we present a novel machine vision system in which a stripe light source is introduced to illuminate the polaroid sample, and these special defects therefore become more visible. At the base of the aforementioned image enhancement, a straightforward and fast image processing algorithm is designed and implemented. The Morphology Template Method is investigated and the shapes, the locations and the sizes of the visual defects are extracted successfully. The experimental results demonstrate this methodology’s validity to inspect the visual defects of transparent multilayer polymer films.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
    detail.hit.zdb_id: 2251882-4
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  • 10
    Online Resource
    Online Resource
    Trans Tech Publications, Ltd. ; 2013
    In:  Advanced Materials Research Vol. 718-720 ( 2013-7), p. 1249-1256
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 718-720 ( 2013-7), p. 1249-1256
    Abstract: Combining with the advantages of the piezoelectric material, positive and negative torque actuator using dual piezoelectric-stack is developed for vibration active control of annular flexible structure in this paper. The working principle of the actuator is described, and the output performance of the actuator is tested in this paper. Also the actuator is applied successfully to the vibration active control of annular flexible structure.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2265002-7
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