Applied Mechanics and Materials Vols. 44-47

Abstract: Pitting corrosion damages seriously the structure strength of port facilities. To estimate the lifetime of port facilities, a new lifetime distribution model of port facilities with pitting corrosion of stochastic processes is proposed. Pitting corrosion can be considered as a combination of two physical processes: pit initiation process and pit growth process. The pit generation process is modeled as a non homogeneous Poisson process. The pit growth process is represented by a gamma process. A lifetime distribution model is derived based on the combined stochastic processes. Finally the proposed models are tested and simulated. The results indicate that the proposed model is feasible and valid for estimating the lifetime of port facilities.

Abstract: Traditional network control systems require designers to use the serial interface or the bus as tools to control equipments. These ways lead to complicated circuit connection and unreliability of hardware. It is therefore imperative to have good methods to explore a more suitable design choice, which can avoid the problems mentioned above as more as possible. This paper presents a TD-SCDMA network control system based on rapid prototyping equipment in VC++ 2008. It also provides high-level modelling, programming methods and running results for this system in terms of software and hardware. More specifically, this system takes advantage of network control technology, TD-SCDMA network technology and advanced manufacturing technology. Wireless communication and control are accomplished timely and accurately between the network control centre and a number of controlled equipments by use of Winsock control in TD-SCDMA network. This system also can manage the historical data by using database. Furthermore, it has such advantages as low cost and easy to maintain and promote.

Abstract: Investigating the results from a lack of a systematic framework analysis approach during production line type design in practice, this paper puts forth a method in implementing a multi risk analysis framework in five categories based on Lean Production, and utilizes the workshop method of Concurrent Engineer to organize the relevant personnel to evaluate a given risk. The applicability of this approach is shown in the example of the production line of an accelerator pedal module. The method described can optimize the result of production line type design and realize a reduction in design time and lower the cost.

Abstract: The enterprise clusters are many enterprises in the same region, which are centralized to produce the same mass products. In the context of globalization, the enterprise clusters are becoming an important force of the leading world economy. Based on investigating and analyzing for the enterprise clusters in south China, the local area networks of the enterprise clusters can be built by using multi-level distributed computer system. The CAD and MIS systems are integrated into the local area networks of the enterprise clusters so that the flexible manufacturing systems can gain manufacturing data from the integrated systems. So, the integrated systems greatly improve the productivity of the enterprise clusters. The CAD and MIS system integration model of intelligentization has been dwelt on in this paper.

Abstract: Evaluation of urban public transportation system plays an important role in developing urban public transportation system. When evaluating urban public transportation system, Support vector machine method can overcome the subjective problem of setting target weight, which is difficult to be solved by fuzzy comprehensive evaluation. Evaluation index system can be established according to the procurability and the effectiveness of the index. By studying several bus systems, the effectiveness of support vector machine evaluation could be proved, which shows that support vector machine model is applicable for the evaluation of urban public transportation system.

Abstract: In allusion to the trust evaluation of partner in Dynamic Virtual Enterprise, a trading practice based trust evaluation model was constructed. The trust evaluation process was divided into real-time feedback information based evaluation, trading history based evaluation and comprehensive evaluation, and the computing methods of every process were put forward. In trading history based evaluation, the relative between the weight of every trading and its trading time was researched. A correction factor of evaluation value was introduced in the process of comprehensive evaluation to reduce the influence of subjective factors in feedback information. Through the research and analysis of simulate experiment, the feasibility and the rationality of this trust evaluation model was verified.

Abstract: Temperature distribution is the foundation to study friction stir welding technique, influence of welding parameters on temperature was studied through experiment measurement on AA2024-T4 aluminum alloy plates. An instantaneous relative linear velocity based heat source was utilized to build the FEM model of friction stir welding process, good agreement was observed between the measured and simulated thermal profiles. FEM model was also utilized to study effect of welding parameters on temperature distribution.

Abstract: In order to monitor the process of laser remanufacturing and control the quality of remanufacturing, a monitoring and control system for laser remanufacturing was constructed with its hardware and software. The schedule of the system including signal condition, software interface, sampling and control method, was introduced. Infra-red thermometer with dynamic aiming device was designed to track the molten pool location. Photoelectric sensor was developed to measure the flow of powder. The contrast test results show that the fuzzy PID control system for powder feeding could achieve stable flow.

Abstract: In this paper, an evaluation method for product form attractiveness based on Miryoku Engineering was proposed. First is to identify the product form attractive factors. Then Conjoint Analysis was employed to obtain product form attractiveness to consumers. This method can help designers to grasp consumers’ preferences to product form attractiveness and specify design objectives. The application on electric kettle was provided to demonstrate the effectiveness of the proposed evaluation method.

Abstract: In this paper, a product color planning method based on multi-emotion was proposed. This method can generate the optimal product color-combination schemes which satisfy user’s multiple image requirements. A mathematical model was developed to generate product color-combination schemes which most closely meet the required images. Then Difference Evolution (DE) was employed to search for the optimal color-combination schemes. The application on a two-colored sofa was provided to demonstrate the effectiveness of the product color planning method based on multi-emotion, which meets the desired result using this method proposed.