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The cracking phenomenon in the process of thick steel plate bending is studied. The influence of metal fiber direction during bending process is analyzed. Combined with Deform-3D, the effect of temperature on the bending process is discussed, the blue brittleness phenomenon of 15 steel is verified and it's blue brittleness temperature is 150–300 °C. The effect of the radius of the folding machete...
The development of the contemporary and advanced manufacturing technology (AMT) is the favorable subsisting and developing environment for traditional manufacturing enterprise. In this paper, the practical requirement to information technology and the key problem to manufacturing information system for the contemporary manufacturing enterprise (CME) in dynamical market environment are analyzed. The...
Production data management became the bottleneck of contemporary corporation management, the hot problem on the software exploitation and the information technology (IT) application, and the key on the achievement of information integration for aeronautical manufacturing enterprise. In this paper, the actual needs situations of aviation manufacturing enterprise were analyzed in detail. The PDM architecture...
This paper deals with feasibility and necessity of the development of agricultural commodity options trading in China comprehensively and also analyses obstruction factors. On the basis of the above, we put forward some suggestions when we develop agricultural trade options in China.
In this paper, an AHP-TFN model based upon the AHP and basic theory of the trigonometrical fuzzy number (TFN) was established and corresponding evaluation process was described, in which to solve the inconsistence of differ judgment matrix set up in similar multi-alternative evaluation problems caused by the AHP or other fuzzy AHP to evaluate the partner selection in the formation of aviation subcontract...
Support Vector Machine (SVM) is a machine learning algorithm based on the Statistical Learning Theory (SLT), which can get good classification effects with a few learning samples. SVM represents a new approach to pattern classification and has been shown to be particularly successful in many fields such as image identification and face recognition. It also provides us with a new method to develop...
The aeronautical subcontract production (SP) is a peculiar manufacturing mode for aviation manufacturing, and the evaluation on complex product configuration management (PCM) for aeronautical SP is an important phases in the family product configuration model based on PFSC. In this paper, a PCM model on module for customer's requirement (CR) is discussed, and the family product configuration model...
The title panel information in engineering drawings is the important data source for product data management (PDM). Firstly, the data structure of title panel and bill of material (BOM) information in engineering drawing was analyzed, and the collected concourse based on the describing information cell was put forward. Then the text-objects and line-objects within the collection concourse were handled...
In this paper, an important method for computing the tool-path, and constructing the offset curves of pocket boundary generates its tool-path planning is the Contour-parallel strategy. But it is very difficult for the judgment and disposal of loop. The main disfigurement of the algorithm in the contour-parallel calculation includes to judge and dispose the linking of offset curves, and to take out...
Virtual enterprise (VE), which is an organization of agile manufacturing (AM), is one of the critical technologies with the implement of AM. In this paper, the conceptions on agile manufacturing faced 21 century and electronic commerce (EC) built on network technology are introduced, firstly. A kind of agile enterprise (AE) model based on EC is presented. Then, the supporting technology of agile enterprise...
In order to improve the ability to solve partner selection and evaluation problem, such as increasing alternatives, increasing info fuzziness, and unconsidering the characteristic of the total task and the idiographic sub-task of each partner in the process on evaluating target system and decision-making approach of partner selection and evaluation for aviation subcontract production (SP), as well...
The shape of leading/trailing edge is very important to the performance of the turbine blade. Generally, the leading/trailing edge is a small section of the elliptic arc. In order to model the blade accurately, we propose here a new idea of handling the difficult situation where the noised data span a small section of the elliptic arc. This new fitting algorithm based on the fitting ellipses subject...
Aviation subcontract production (SP), the particular manufacturing mode of aeronautical manufacturing, is an important instrumentality participated in market competition, but the key step formed the SP alliance is the partner selection and evaluation. In order to improve the ability to solve partner selection and evaluation problems, such as increasing alternatives, increasing info fuzziness, and...
Ultrasound elastography is the technique of obtaining tissue stiffness information. In tumor diagnosis, the stiffness of the tissue is one of the most important parameters for tissue characterization, the more accurate stiffness information clinic doctors obtain, the more reliable diagnosis conclusion they can make. In ultrasound elastography, motion tracking between two successive frames plays a...
With the rapidly development of digital video broadcasting business and Ethernet network, more and more business and users attach great importance to Internet set-top boxes and interrelated software and hardware, the business is developing rapidly for Internet video-on-demand and live broadcast. In order to meet the demand of the people through the TV to watch video in Ethernet rich resources, and...
In order to improve the production efficiency of H-Beam and reduce the labor strength of workers, and develop the biggest potential of equipment and possess position in intense market competition. Based on adjustment the roll gap value between the rollers of all rolling mills accurately and quickly by three stands reversible continuous rolling inline, the operating principle of system of roll gap...
The definitions of complex product configuration management (PCM) for aeronautical subcontract production are introduced. A product functions and structure components (PFSC) oriented information model on product configuration template (PCT) is accomplished, in which rapidly responds to the customers' configuration requirement. And also, a fuzzy AHP method to the evaluation on PCT of PCM model in Aero-SP...
A customer's requirement (CR)-oriented study of product configuration management (PCM) information model based on PFSC for aeronautical Subcontract production is brought forward. And a uniform product configuration model is formulated. Also, a PCT-based information model of PCM by self-organizing mapping, which in the relative matrix of customer's requirement characteristics and the functions principle...
A new rapid prototyping (RP) technology - air-pressure jet solidification (AJS) system is built up to fabricate the negative form of artificial bone based on the principle of fused deposition modeling (FDM) technique. Both fabrication accuracy and uniformity are proposed in this research. From experimental results, it shows that both exact external structure and inner three dimensions (3D) scaffolds...
Based on bionic modelling of artificial bone and tissue engineering research, structure design of bone scaffolds is produced through computer aided design software in this study. Moreover, matching relations of optimization parameters are determined accurately through theoretical analysis and experiment. From the contrast results, it shows that some necessary indexes, such as porous microstructure,...
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