Manufacturing flexibility: conceptualization and measurement

Kahyaoğlu, Yasemin


Convex envelope results and strong formulations for a class of mixed-integer programs
Denizel, M; Erenguc, SS; Sherali, HD (1996-06-01)
In this article we present a novel technique for deriving the convex envelope of certain nonconvex fixed-charge functions of the type that arise in several related applications that have been considered in the literature. One common attribute of these problems is that they involve choosing levels for the undertaking of several activities. Two or more activities share a common resource, and a fixed charge is incurred when any of these activities is undertaken at a positive level. We consider nonconvex progra...
Flexible assembly line design problem with fixed number of workstations
Barutçuoğlu, Şirin; Azizoğlu, Meral; Department of Industrial Engineering (2009)
In this thesis, we study a Flexible Assembly Line Design problem. We assume the task times and equipment costs are correlated in the sense that for all tasks the cheaper equipment gives no smaller task time. Given the cycle time and number of workstations we aim to find the assignment of tasks and equipments to the workstations that minimizes the total equipment cost. We study a special case of the problem with identical task times. For the general case, we develop a branch and bound algorithm that uses pow...
A tool switching problem in flexible manufacturing systems
Karakayalı, İbrahim; Azizoğlu, Meral; Department of Industrial Engineering (2003)
Solution approaches for flexible job shop scheduling problems
Balcı, Şerife Aytuğ; Azizoğlu, Meral; Oğuzsoy, Cemal Berk; Department of Industrial Engineering (2013)
In this thesis, we consider a flexible job shop scheduling problem existing in discrete parts manufacturing industries. We are motivated by the production environment of Roketsan Missiles Industries Incorporation, operating at Turkish defense industry. Our objective is to minimize the total weighted completion times of the jobs in the system. We formulate the problem as a mixed integer linear program and find that our model could find optimal solutions only to small sized problem instances. For medium and l...
Energy conscious scheduling in a two-machine robotic cell
Akhlaghi, Vahid Eghbal; Gürel, Sinan; Gültekin, Hakan; Department of Industrial Engineering (2017)
Robotic cells usually operate under time pressure to minimize time related objectives such as cycle time, makespan, and tardiness. Robot moves constitute a significant portion of cycle time. Also, robots consume significant amount of energy determined by the speeds and distances of their moves. We study the tradeoff between the cycle time and energy consumption of a robot in a two machine flexible robotic cell which processes identical parts. In this system, the loading and unloading of machines are made by...
Citation Formats
Y. Kahyaoğlu, “Manufacturing flexibility: conceptualization and measurement,” Ph.D. - Doctoral Program, Middle East Technical University, 1998.