Advanced Materials Research Vols. 328-330

Abstract: The stresses and strain values at various indentation depths are applied to determine the Gibbs free energy at various phases. The intersections of the Gibbs free energy lines are used to determine the possible paths of phase transitions arising at various indentation depths. All the critical contact stresses corresponding to the various phase transitions predicted by the proposed model for the specimens treated at four annealing temperatures were found to be consistent with the experimental results. The proposed model is thus valid for predicting contact parameters using nanoindentations. The critical contact stresses for the phase transitions increased with increasing specimen annealing temperature.

Abstract: This study first establishes a mathematical model of 5R-P kinematics with the closed-loop vector method, then the corresponding M functions are written, at the same time, the 5R-P kinematic simulation model is built by virtue of Matlab/Simulink. From the simulation, the displacement, velocity and acceleration curves of slider can be obtained on condition that the appropriate initial conditions are set beforehand. Finally, Taguchi method is introduced to this mechanism to optimize the design of each link’s length, and a more reasonable combination of each link’s length allows the 5R-P mechanism to perform better. Most kinds of complicated linkages can be commonly designed in this method, which is parametrized more efficiently. What is more important is that this method can also be introduced to deal with the dynamic analysis of the linkages for the purpose of carrying out a more comprehensive design and optimization.

Abstract: Most of the buildings for high-tech plants are fireproof and the process equipment in the clean room is in compliance with high-standard fire prevention evaluation regulations such as National Fire Prevention Association (NFPA), Factory Mutual (FM),and Semiconductor Equipment and Materials International (SEMI). However, fire management is usually neglected though fire protection higher than domestic fire control regulations is applied. Fireproof and smoke-proof design of the original buildings can be damaged due to expansion of production facilities, causing a potential danger of a fire. Cases of fires in domestic semiconductor manufacturing factories were explored in this research and claim settlements provided by MSIG Mingtai Insurance Co., Ltd., Taiwan to high-tech plants were analyzed for determination of the quantified weights used by the insurance companies when evaluating fire risks of a building. The fire safety badge promoted by Architecture and Building Research Institute, and Ministry of the Interior was also discussed for reference of fire safety assessments of high-tech factory buildings in the future.

Abstract: TRT unit is very important mechanical equipment in steel industry. It not only embodies in saving energy utilization of blast furnace gas, but also can stabilize a top pressure, reduce smelted fluctuation, and make the blast furnace more stable. Therefor, to implement TRT unit vibration monitoring and fault diagnosis is quite necessary. The vibration fault diagnosis of TRT is researched on this paper. Virtual instrument, modern signal detection and analysis technique, order analysis as well as the high-speed rotor dynamic balance technology are studied on TRT unit. At present, lots of enterprises use the vibration signal detection to ensure the safe running of the equipment and promptly eliminate the hidden danger. It has a great effect on research of TRT fault diagnosis system and security of the safe operation on TRT units.

Abstract: In recent years, the extreme weather has caused a serious effect to the engineering, strong rainfall is the important reason result in debris flow frequent happens. For the problem of slope stability under the condition of strong rainfall, this paper adopted the strength reduction by FEM, combining case of slope, analyzed the causes the bedrock soften under the condition of normal and strong rainfall separately, band slope appears the phenomenon of saturated water softening under strong rainfall, an d its physical mechanical properties and strength greatly reduce. The conclusion can be obtained that the problem of slop safety and stability is caused by bedrock softening. Following bedrock strength decreases by step, then slop loses safety and stability.

Abstract: As the constantly growth of embedded Technology, embedded products put into use in almost everywhere around our life. This paper mainly introduce how to set up the Qt/Embedded Cross-compiling environment in Linux system platform, and the development and transplant of embedded fault diagnosis system use development tools of Qt/Embedded. This system achieve those functions, including fault display, signal analysis, diagnostic model training and data storage or transmittal, by graphical interfaces designing and performance function addition. And finally create the application document which applies to ARM framework embedded processor by Cross-compiling. In the end, the application document is transplanted and run in the target platform, and testing the diagnosis effects.

Abstract: Transmission line wire is a kind of suspension cable structure, need to determine the initial state of the wires, so can make a accurate analysis for the transmission line system. This paper introduce the form-finding process of wires in ANSYS, get the final sag and stress ,compared with the theoretical value ,proved the accuracy of form-finding in ANSYS.

Abstract: In this article, the entropy weight and fuzzy comprehensive evaluation methods is applied to Ecological Benefit of cold-formed thin-walled steel residential structure. Designed indicators system of Ecological benefits about cold-formed thin-walled steel residential structure, we divided into nine indicators in the system, then we grant questionnaire through selecting experts of project benefits Evaluation and experts on study about cold-formed thin-walled steel residential structure, Scoring the importance of eco-efficiency indicators, Using the Entropy weight to determine the weights of evaluation indexes, then combining with fuzzy comprehensive evaluation model, comprehensive evaluation on a variety of factors is made, analyzing ecological benefits about cold-formed thin-walled steel residential structure, eventually the result of Comprehensive Evaluation of Ecological benefits about cold-formed thin-walled steel residential structure is obtained.

Abstract: GT-Suite software is used to establish the simulation model of high-pressure fuel injection system for diesel engine. Simulation parameters are modified based on the comparison with given experimental results. In order to improve diesel engine fuel injection performance, the cam profile was improved to ensure a high injection pressure and smooth operating characteristics. A more reasonable fuel cam profile was designed by analyzing the injection characteristics and dynamics. It improves the fuel mixture formation and combustion, so diesel economy and emissions performance are also guaranteed.

Abstract: Performance evaluation of public organizations is a problem we are facing at home and abroad. Objective and overall quantitative evaluation should be based on the interdisciplinary knowledge system basis, therefore, this article depends on public management theory, management science and engineering theory, statistics and so on, drawing Quantitative assessment experience from abroad, following the logic of evolution of quantitative assessment, based on combining theory with practice, empirical analysis and normative analysis, induction and education ,qualitative and quantitative analysis, to research the intrinsic logic of organization performance and explore the new system of quantitative evaluation . The paper first elaborates and explains quantitative analysis of organization performance, then, based on value orientation of public organizations and data envelopment analysis (DEA model), construct index system of government performance .On this basis, the paper mainly gives some more objective evaluation from the relationship between DEA effectiveness and government performance of some cities in Shandong province.