In this paper, a new mathematical model for the problem of job scheduling in virtual manufacturing cells (VMC) is presented to minimizing the completion time of all jobs. Sequence dependent setup times of machines is considered and lot-streaming is possible. In Virtual manufacturing cells, each job has a different processing path and there is a set of machines for processing each operation. The...

Manufacturing systems are complex entities, comprised of people, processes, products, information systems and data, material processing, handling, and storage systems. Because of this complexity, systems must be modeled using a variety of views and modeling formalisms. In order to design and properly integrate system functions, the multiple views and models must often be considered simultaneous...

A kind of virtual plant laboratory system for process systems engineering education and research is developed, which is deemed an effective and applicable tool. The proposed system consists of pilot tanks, package simulation software of unit operation and a real enterprise information system including DCS, management database and MES (manufacturing execution system). Particularly, positive effe...

Virtuosi is a major UK project to explore how virtual environments can be used to support cooperative work across distributed real organisations. Its main aim is to develop a sound framework for constructing CSCW (Computer Supported Cooperative Work) systems that integrates our emerging understanding of natural and effective social structures with the state of the art in virtual reality, multim...

Manufacturing enterprises are being forced into greater collaboration with customers and suppliers in order to produce quality products in smaller batches, shorter lead times, and with greater variety. Consequently, the design-for-manufacturing task must be conducted in these virtual and distributed enterprises across traditional organizational boundaries. This paper proposes the use of standar...

Layout design and the flow of materials have a significant impact on performance of manufacturing system (garments industry) .These can help to increase productivity, reduce work in process and inventory, short production lead time, streamlines the flow of materials, cost and reduce non value added activities from the production process of waiting and transportation, which make the factory meet...

Virtual manufacturing systems carry out the simulation of manufacturing processes in digital environment in order to increase accuracy as well as productivity in part production. There are different error sources in machine tools such as tool deflection, geometrical deviations of moving axis and thermal distortions of machine tool structures. The errors due to tool deflection is caused by cutti...

Manufacturing and logistics are globally facing transformational changes. The introduction of new technologies and the advances in equipment and intelligence capability are having profound effects on production and logistics in practice. New solutions for manufacturing and logistics are evolving to respond to various needs. In particular, production and services are transformed from vertically ...

Agile Manufacturing (AM) is a new concept in manufacturing intended to improve the competitiveness of firms. In 21 st century, businesses in order to overcome their competitors, should be able to handle challenges of demanding customers seeking high quality, low cost products and also become more flexible with their specific and rapid changing needs. One of the recent concepts in support of fle...

The manufacturing sector has been facing major challenges as it undergoes revolutionary changes fuelled by new and sophisticated demands from customers, global competition, distribution of manufacturing and marketing activities, and technological advances. In order to address these challenges, manufacturing enterprises need to change the way they do business and adopt innovative organizational ...