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Title: Some Studies on Flexibility Based Manufacturing System in Evolving CIM Environment
Researcher: Ajay Kumar Singh Singholi
Guide(s): Mohammad Ali and Chitra Sharma
University: Guru Gobind Singh Indraprastha University
Completed Date: 2011
Abstract: This thesis aims to enrich some insights into performance improvement in newlineflexibility based manufacturing systems. The overall theme is to enhance the research on newlineimproving the time-based competitiveness of flexibility based manufacturing systems newlineoperating under multiple flexibility types. The study focuses on manufacturing flexibility newlineas a means to enhance the system performance under some operating conditions such as newlinesequencing and dispatching rules, number of pallets, buffer size and part mix ratios. A newlinesalient contribution of this research effort is focused on adopting the concept of newlineFlexibility based Manufacturing System (FBMS) as a central theme related to flexible newlinemanufacturing system (FMS) in the evolving computer integrated manufacturing (CIM) newlineenvironment. Important flexibility types are considered to evaluate the performance of newlinethe system (FBMS), these are, process flexibility, machine flexibility, routing flexibility newlineand volume flexibility. Process flexibility of a manufacturing system relates to the set of newlinepart types that the system can produce without major setups. Machine flexibility (of a newlinemachine) refers to the various types of operations that the machine can perform without newlinerequiring a prohibitive effort in switching from one operation to another. Routing newlineflexibility is defined as the ability to handle breakdowns and to continue producing a newlinegiven set of part types. Volume flexibility deals with the demand variations. Experiments newlinefor each flexibility type are performed under various buffer conditions such as finite and newlineinfinite buffers, five levels of number of pallets (6, 24,42, 60 and all) and four levels of newlinescheduling rule combinations are incorporated i.e. First come First served (FCFS) + newlineMinimum queue (MINQ), Shortest process time (SPT) + Minimum queue (MINQ), First newlineCome First Served (FCFS) + Minimum waiting time in queue (MWTQ) and Shortest process time (SPT) + Minimum waiting time in queue (MWTQ). These experiments are newlinefurther verified for different part mix ratios. newline newline...
Appears in Departments:University School of Engineering and Technology

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