Advanced Materials Research Vols. 201-203

Abstract: EXPRESS-to-XML mapping is an indispensable foundation in manufacturing network data transmission and share. Put forward and construct a networked manufacturing system with synergy based on the whole life manufacture cycle of the products and the manufacturing information share. Stress is on the mapping mechanism from the standard description language of STEP_NC——EXPRESS to XML，presenting the separate-mapping method with which according to the function and feature of the information to be transmitted and shared, the physical file of STEP_NC is divided into general information structure elements, feature information structure, and operating information structure, realizing the optimally comprehensive mapping with the early binding and the late binding. Build up STEP_XML conversion system. Example is given for component with a hole in running the separate mapping method on the STEP - NC Machine simulation platform. It has been shown that the conversion system and the separate-mapping method are practical and efficient.

Abstract: The concept of cloud manufacturing (CMfg) is discussed, as well as its core enabling technologies. A seven-phases running mode for CMfg was proposed, and the related inputs, enabling technologies and tools, knowledge and algorithm repositories, and intermediate products and results for each phase are described in detail. Two kinds of CMfg service platforms, i.e., private and public CMfg service platforms are analyzed.

Abstract: Modern computer simulation system has developed towards the direction of large-scale and distributed computing pattern. The large-scale simulation applications always deploy over heterogeneous networks across geographically dispersed locations, and the simulation process often lasts for a long time without intermission. The challenge is that various errors cannot be avoided during a long continuous running time in such a broad network environment with a huge number of simulation resources. The problem of simulation fault tolerance has become a hot issue. This paper introduces live migration method to virtualization-based computer simulation system, handling reliability problems, especially fault tolerance issues. The paper presents a framework of simulation fault tolerance. Then the detailed live migration mechanism of run-time simulation is discussed. The method can provide an approach to consolidating the reliable simulation in distributed and long-term simulation applications.

Abstract: A method of virtualization technology of manufacturing resources was analyzed and designed in Cloud Manufacturing environment toward the new type of networked manufacturing. Diverse-grained information such as the abstract, description, interface, packages have been put forward on basis of resource virtualization technology of manufacturing grid in order to implement resource virtualization. Virtualization of manufacturing hardware and software resources were mainly analyzed and researched in this paper. The primary research shows that this resource virtualization technology of Cloud Manufacturing can provide an important basis and premise for the further development of Cloud Manufacturing theory.

Abstract: Cloud manufacturing (CMfg) is a new service-oriented, highly efficient, lowly consumption knowledge based, and intelligent networked manufacturing model. It aims to provide theoretical and technical supports for the transformation from production-oriented manufacturing to service-oriented manufacturing [1]. In order to further analyze the connotation and characteristics of CMfg, multi-view models for CMfg are investigated based on [1] and [2] in this paper. The first is the network view model, which describes four kinds of network involved in the running process of CMfg system; the second is the function view model, which describes the functional subsystems of CMfg; the third is the running view model, which represents the running process after a requirement is submitted to CMfg system.

Abstract: After Sepharose-4B polymerbeads were activated by using epichlorohydrin, purified swine fever virus as a ligand were binded with them to prepare an immobilized affinity chromatography column, which was used to prepare antibody from high immune pig serum. Equilibrated with pH 7.4, 0.02 mol/L PBS and eluated with pH 3.4, 0.2 mol/L NaAc–HAc buffer containing 0.5 mol/L NaCl, the purified protein obtained from this columne was demonstrated to have normal activity to combine with classical swine fever virus by SDS-PAGE and ELISA. The extraction efficiency of the antibody was 2.45% of total proteins. This study offers a novel, rapid and effective method for preparation of pure antibodies against classical swine fever virus from high immune pig serum.

Abstract: Prediction of surface roughness is an important research for machining quality analysis. In order to predict surface roughness in machining, increasing productivity under ensuring milling, the artificial neural network is introduced into milling area. To build high-speed milling surface roughness prediction model using BP neural network. Prediction results are compared with experimental value, which shows that this method can achieve better prediction accuracy. It has certain significance for parameters selection of high-speed milling and quality control of the surface.

Abstract: This paper reports a dual-mode film bulk acoustic resonator (FBAR) device combined with Au/Cr layer to construct a liquid sensor. In order to obtain a liquid sensor with high sensitivity, the dual-mode FBAR with piezoelectric layer of ZnO thin film has been investigated. The dual-mode characteristics of FBAR appeared by off-axis deposition of ZnO thin film with the RF magnetron sputtering. The top and bottom electrodes consisted of a titanium (Ti) and a platinum (Pt) layers were deposited by dual-gun DC sputtering system. Owing to the chemical stability, the Pt layer is not only a perfect bottom electrode but also an etching stop layer. The gold layer (Au) is adopted for the formation of sensory area. In order to improve the adhesion between the Au layer and the Pt layer, a chromium (Cr) layer was deposited onto the backside cavity of the FBAR device before the Au layer was deposited by a DC sputter. The Au/Cr layer is used as the binding layer with analytes of DI water because of its hydrophile. The frequency response is measured using an HP8720 network analyzer and a CASCADE probe station. The resonant frequencies of longitude and shear modes in air appear at 2262.5 MHz and 1012.5MHz, whereas the resonant frequencies of longitude and shear modes in DI water are 2062.5 MHz and 955MHz, respectively.

Abstract: This paper introduces the content included in two-dimensional quality information of the SMT solder joint and illustrates the basic principle of extracting two-dimensional information quality of SMT solder joint .By explaining the basic theory and principles and combining with example, the implemention of extracting methods and steps are discussed.The extraction algorithms carry out in VC + + programming, And this lay a good groundwork for follow-up intelligent analysis of solder joint.

Abstract: Biomass fast pyrolysis technology is one of most promising methods to utilize biomass resources, for its high production of pyrolysis liquid named bio-oil. And the fast pyrolysis fluidized reactor is widely used because of the advantages of simple structure, and easy to enlarge. The understanding of computational fluid dynamics (CFD) of its fluidized bed is necessary basis for particulate heat transfer and pyrolysis kinetics research. In this paper, modern hydrodynamic theory and calculation means is employed to simulate the cold state of fluid behavior in the pilot-scale fluidized pyrolysis reactor. The simulation results are in good agreement with the empirical equation and experimental data, with resultant error lower than 10%. Based on the cold state simulation, we modeled the fluid flow behavior in the fluidized reactor during fast pyrolysis under high temperature, and calculated the fluidization velocity and the distribution of solid phase fraction.