Reconfigurable manufacturing systems are recognized as next generation manufacturing systems capable of providing the exact functionality and capacity as and when required. The reconfiguration of the system depends upon the ease with which any machine can be added, removed or re-adjusted for upcoming configuration from any initial or outgoing configuration. The efforts required while changing a...

The problem of production flow in manufacturing systems is analyzed. The machines can be operated by workers or by robots, since breakdowns and human factors destabilize the production processes that robots are preferred to perform. The problem is how to determine the real difference in work efficiency between humans and robots. We present an analysis of the production efficiency and reliabilit...

Research work carried out in the last decade on the Microelectronics Manufacturing Science and Technology (MMST) program sought to address a need for increased flexibility in IC manufacturing through single-wafer processing, with in-situ sensors and real-time process/factory control has lead to a successful demonstration of a novel approach to IC manufacturing based on flexible process. To make...

turbocharging an engine boosts its power by increasing the amount of input air. this task is accomplished by using the exhaust gas to power a turbine which is engaged with a compressor. the variable geometry turbocharger, vgt is a unique turbocharger that the diffuser vane angle can be changed over a wide range of positions. the mathematics of turbomachinery flow analysis is intensive and uses ...

introduction: in order to determine the multidrug resistance (mdr) phenotype due to p-glycoprotein expression in haematological malignancies including acute myeloblastic leukemia (aml), a well-characterized p-gp expressing cell line was required to validate and standardize flow cytometric assays and to calibrate instruments. therefore, this resistant subline of k562 was established for the firs...

In order to keep up with the flexibility and cost-efficiency requirements, the manufacturing industry has begun a transformation process towards a service-oriented production approach. This approach is in line with the cloud manufacturing paradigm that applies established concepts from cloud computing to the manufacturing domain. Although the cloud manufacturing paradigm provides promising conc...

This paper breaks new ground by modelling lot sizing and scheduling in a flexible flow line (FFL) simultaneously instead of separately. This problem, called the ‘General Lot sizing and Scheduling Problem in a Flexible Flow Line’ (GLSP-FFL), optimizes the lot sizing and scheduling of multiple products at multiple stages, each stage having multiple machines in parallel. The objective is to satisf...

Purpose: This paper explores the capabilities of genetic algorithms in handling optimization of the critical issues mentioned above for the purpose of manufacturing process planning in reconfigurable manufacturing activities. Two modified genetic algorithms are devised and employed to provide the best approximate process planning solution. Modifications included adapting genetic operators to th...

This thesis focuses on the operational improvements in a semiconductor equipment manufacturing company (Varian Semiconductor Equipment Associates). The company faces challenges of highly fluctuating demand as well as complex and highly customized assembly, which lead to problems such as lead time control and components tracking at multiple manufacturing stages. The goal of the project is to pro...