Rapid tooling technology is regarded as an important method of reducing the cost and time to market in a new product development process. Silicone rubber mold is frequently used in indirect tooling. Automatic vacuum casting system is widely used to degas in the manufacturing of silicon rubber mold, but the cost of hardware is very expensive. A low-cost automatic vacuum degassing system is desig...

Three lessons have been learned by applying the Object Oriented Approach to the design of large concurrent and distributed software systems programming in the large adopt a unitary computational model to favor the use of frameworks of classes approach the design with an evolutionary development process to split in time design decisions and so cope with complexity use integrate CASE tools for th...

introduction: current thermal cycling units fail to simulate the drinking behaviors, and oral balancing temperature. they cannot also simulate other oral conditions such as drink coloring, and chemicals like tea, coffee, carbonated and noncarbonated, citrus juices as well as alcoholic and nonalcoholic drinks and also saliva and milk itself. the main objective of this study is to introduce the d...

the main objective of this study is to investigate the production factors productivity in large manufacturing sub-sectors. for this purpose, using statistical data for period 1972-2004, we have tried to study and analyze the trend and level of production factors productivity (partial and total productivity) in each sub-sectors classified according to isic two digits code. the average and margin...

As IC technology advances rapidly, the dimensions of packages and PCBs are decreasing while the pin counts and routing layers keep increasing. Today, a high-performance PCB usually contains thousands of pins and more than ten signal layers. Moreover, the manufacturing constraints require all nets to be routed in the planar fashion and the designer requires nets in the same bus to be routed toge...

Setup planning is an intermediate phase of process planning, and automating setup planning constitutes a critical component of computer-aided process planning. The common absence of a clearly defined optimality of setup plans has been a major obstacle to converting automatic setup planning research progress into real advancement in practice. The optimality of a setup plan is a multiple attribut...

This paper deals with the definition of a general approach to the modeling and control specification of Flexible Manufacturing Systems. The development and the analysis of complex FMS models can greatly benefit from the automatic synthesis of the complete models and the availability of a graphic tool to describe them in a concise way. The automatic synthesis helps the designer to succeed in the...

Petri-Net is widely used in the field of modeling a flexible manufacturing system (FMS) because of its intrinsic features such as concurrency, uynchronization, conflict, and eventtriggering. But designing a Petri-Net Model for an FMS is extremely tedious and difficult for debugging. Therefore, an automatic Petri-Net generator which can generate a bug-free model for an FMS is rather useful and p...

Semiconductor manufacturing companies have constructed large fabs to enhance their competitive advantage.Normally, a modern Giga-fab has several production phases associated with AMHS (Automatic Material Handling System), and monthly capacity is greater than 100K [tsmc website].Since there are many production phases connected and the demand uncertainties particularly for make-to-order environme...

In an industrial context, most manufactured objects are designed using CAD (Computer-Aided Design) software. For visualization, data exchange or manufacturing applications, the geometric model has to be discretized into a 3Dmesh composed of a finite number of vertices and edges. However, the initial model may sometimes be lost or unavailable. In other cases, the 3D discrete representationmay be...