Advanced Materials Research Vol. 628

Abstract: This paper describes some of the characteristics of nano-materials are discussed nano SiO2, silica fume and nano-scale carbon-fiber reinforced concrete to improve strength and durability of the role of nano-SiO2, silica and carbon nano-fibers can be prepared as an admixture of high performance concrete, nano materials can also be used as a preparation mixed with Division of concrete with special features, such as metal oxides can be prepared by adding nano smart concrete and green concrete, metal powder can be prepared by adding nano electromagnetic shielding concrete.

Abstract: Appling the design principles and methods of Ergonomics into the modern office furniture design, analysis of the design elements of the modern office furniture in Ergonomics, for the concept of ensuring that human health, safe, comfortable and efficient, provided scientific and rational design method of Ergonomics for the modern office furniture design.

Abstract: Employee performance evaluation is a key part for the enterprises to improve human resource management. It provides a way of managing and motivating staff for modern enterprises. In order to solve the problem of performance appraisal for the employees of manufacturing enterprise, a model of multi-role-based performance appraisal is put forward based on the comprehensive analysis of organizational structure. Taking sales manager of a manufacturing enterprise as an example, with the integrated using of Analytical Hierarchy Process (AHP) and Fuzzy Comprehensive Evaluation (FCE), the method of performance evaluation is proposed, which provides a reference for performance appraisal of manufacturing enterprise.

Abstract: MEMS technology has become the hotspot of fuze development currently, but the reliability problems seriously influence the application of MEMS in fuze. By way of analyzing the characteristic of MEMS fuze mechanism in aspects of process technics, material behavior, structure form and micro size effect, it shows that the reliability of MEMS mechanism is quite different from the traditional fuze. The environment stress in full life cycle of fuze and the main failure mode of MEMS mechanism under environment stress have been analyzed, and the interrelated matrix between environment stress and failure mode has been presented. Based on these investigation, the reliability testing method of MEMS fuze mechanism has been studied, which can provide guidance for the reliability testing of MEMS fuze mechanism.

Abstract: Molded Interconnect Device (MID) can be defined as that an injection-molded plastic part combining with electrical and mechanical functions in a single device. This study is to examine the application of micro injection molding technology to the two-component molding process for the MID fabrication. The process involves the first shot of a plastic component with channel patterns on the surface. A second shot by micro injection molding technology is applied to fill the channel with the plateable plastics. The effects of the micro injection molding process parameters on filled line width of the two-component MID will be investigated. It is concluded that, for a MID component, the molding conditions must be designed carefully to keep the thickness variation below the allowable value. It is also found from the experiments that the thickness interference may in the range from 92 m to 196 m to have adequate molding at the second shot.

Abstract: Owing to drilling capacity can reach micron grade, laser punching technology has been widely used in high-tech field. In this article, ultraviolet laser has been adopted to punch on polystyrene material, the ablation principle and heat transfer between ultraviolet laser and material are analyzed. Through the finite element simulation, microporous temperature field distribution can be obtained. At last, by experiments that use single factor method to get laser parameters on the effect of surface morphology and microporous depth/diameter ratio, the optimal laser parameters that satisfy requirements which are less slag and tapered micropore can be acquired.

Abstract: Technology innovation alliance strategic is a basic and a trend for product innovation in SMEs (small and medium-sized enterprises). Researching on cooperative dynamic mechanism, FGEM for product innovation alliance in SMEs is built based on entropy theory. To improve the product innovation ability and comprehensive entropy management level, a standardized evaluation index and evaluation system is proposed, and a product innovation alliance dynamic evaluation method is constructed to give a new way for sustainable development of enterprises and constant innovation and upgrading of products.

Abstract: The fabrication mode of vehicle components assembly tester belongs to single unit job lot production, with single quantity and mass operations. In order to produce them with high efficient and low cost, the resources configuration method plays an important role. The fabrication simulation model using a dynamic stochastic function is set up. First, the stochastic factors, including uncertainties of production task caused by market variety, production duration caused by design modification and production process caused by resource configuration diversity, are described with the change of production operations. Then the dynamic stochastic model of production process is set up on the basis of the transition probability matrix, preparation time and flexible time. As an example, the application method of this model for the synchronous fabrication process of drive axle performance tester and running tester is investigated. The results show that this method can be used for the planning and evaluation for the complex equipments fabrication within specified period.

Abstract: Electrically conductive polycrystalline composite diamond (EC-PCD) material, which consists of electrically conductive diamond particles, has recently been developed for the purpose of providing the material with both excellent tool properties and machinability. This paper deals with effects of giving ultrasonic vibrations to an electrode on the EDM characteristics of EC-PCD with a view to achieve a great improvement in electro-discharge performance. In this series of EDM experiments, three types of ultrasonic vibration modes were selected (axial vibration, flexural vibration and complex vibration). The result showed that the removal efficiency of EC-PCD increased in any vibration modes. Especially when axial vibration with large amplitude and complex vibration composed of axial mode and flexural mode were given to the electrode, removal efficiency became four times higher than that obtained when no vibration was given. And, electrode wear rate was reduced to one third or 68% against the value of 187% obtained when no vibration was given. Furthermore it was shown that the effects resulted from not only the cavitation action of the working fluid but also the vibrational action of the electrode itself.

Abstract: In order to improve the pneumatic gauging precision of honing process, according to the pneumatic gauging characteristic of honing machine, the mathematical model of air current state in measurement process is established with oblique shock wave theory. Through setting up different fillet on protection plate, the air flow state of measurement process could be improved. The change of gas velocity, temperature and pressure was analyzed for different protection plate structure by fluid simulation software, the validity of the theoretical analysis was verified, which can provide the theory basis for structure optimization of the honing head.