Browsing by Subject "Manufacturing processes."

Now showing 1 - 3 of 3

Open Access
Design of cellular manufacturing systems using a holonistic approach
(1998) Türkcan, Ayten
Cellular manufacturing is application of group technology to mcinufacturing. Cellular manufacturing system design problem involves the identification of part families, machine groups and layout of cells, and the selection of tools, fixtures and material handling equipment. In this study, part family and machine cell formation, and within-cell hiyout problems are solved simultaneously by using a holonistic approach. A mixed integer programming (MIP) model is proposed to form completely independent cells. The model maximizes total profit under cell size, within-cell layout, machine capacity, low utilization and low profit level constraints. Since it is difficult to obtain a feasible solution to the proposed model in a reasonable computation time, a local search heuristic based algorithm is proposed. The first two stages of the algorithm are used to find a feasible solution to the MIP model and the third stage provides an alternative solution with intercell movements. The proposed algorithm finds feasible solutions to the problem in recisonable computation times.
Open Access
Dynamic lot-sizing and scheduling in a cellular manufacturing system
(1993) Dağlıoğlugil, Orhan
In most of the production systems, lot-sizing and scheduling decisions are given in different levels of hierarchy, however there is a strong interaction between these decisions. Most of the existing models do not utilize the shop floor conditions in lot-sizing and scheduling decision dynamically, even though such a. decision might improve the system performance. In tins study, a dynamic lot-sizing and scheduling algorithm is suggested for cellular manufacturing systems, wliich utilizes a h}d)rid simulation/analytic modelling approach. The performance of the proposed algorithm is compared with the push and pull systems under different shop floor conditions.
Open Access
Medium range production planning of "Tacer" company: a case study
(1994) Süer, Burak
In order to foresee the potential problems related with production, a production plan is undertaken for the year 1994. Product classification is determined according to the annual sales volume of the company "Tacer". A production schedule is prepared in relation with the forecast data of 1994. The schedule is examined by capacity requirements and financial analysis. Some capacity problems that are highlighted were investigated in the analysis section. Short and long term solutions were made to overcome the insufficient capacity