Designing an information system for material management in engineer-to-order organizations

Dede, Erdoğan
In this thesis, an information system is designed and developed for engineer-to-order organizations to improve the traditional Bill-of-Material by handling variants of products and components efficiently. A database is developed to store the related information about inventories and configuration management in an effective way. The improved Bill-of-Material provides a common structure to access stored information for material management purposes. A model, based on network, is presented and included into the system for calculating time required to produce components and to make subassemblies or assemblies with the current inventory levels. The system is applied to TÜBİTAK-SAGE, which is an engineer-to-order organization carrying out Research and Development projects for Defense Industry.


A DEA-based approach to ranking multi-criteria alternatives
Tuncer, Ceren; Köksalan, Murat; Department of Industrial Engineering (2006)
This thesis addresses the problem of ranking multi-criteria alternatives. A Data Envelopment Analysis (DEA)-based approach, the Method of the Area of the Efficiency Score Graph (AES) is proposed. Rather than assessing the alternatives with respect to the fixed original alternative set as done in the existing DEA-based ranking methods, AES considers the change in the efficiency scores of the alternatives while reducing the size of the alternative set. Producing a final score for each alternative that account...
Integrated procurement and transportation planning for purchased components: a case study
Yanık, Hatice Deniz; Bayındır, Zeynep Pelin; Department of Industrial Engineering (2008)
This study is about an integrated procurement and transportation planning system for purchased components of a consumer-durables manufacturer. Due to transportation cost structures and demand characteristics our problem can be classified as a variant of the dynamic-demand joint replenishment problem. The problem is to determine the replenishment policy using the advantages of coordinated transportation of items that will minimize the sum of total inventory holding and tranportation costs over a finite plann...
A case study : improvement of component placement sequence of a turret style smt machine
Çengel, Mehmet Savaş; Kandiller, Levent; Department of Industrial Engineering (2006)
This study aims to improve component placement sequencing of a number of PCBs produced on a turret style SMT machine. After modeling the problem and having found that an optimal solution to the real PCB problem is hard to be achieved because of the concurrent behavior of the machine and the PCB design parameters, two heuristics are developed by oversimplifying the problem down to TSP. Performance of the heuristics and the lower bounds is evaluated by comparing the results with the optimal solution for two s...
Comparison of the resource allocation cababilities of project management software packages in resource constrained project scheduling problems
Hekimoğlu, Özge; Serpil, Canan; Department of Industrial Engineering (2007)
In this study, results of a comparison on benchmark test problems are presented to investigate the performance of Primavera V.4.1 with its two resource allocation priority rules and MS Project 2003. Resource allocation capabilities of the packages are measured in terms of deviation from the upper bound of the minimum makespan. Resource constrained project scheduling problem instances are taken from PSPLIB which are generated under a factorial design from ProGen. Statistical tests are applied to the results ...
Material flow cost versus congestion in dynamic distributed facility layout problem
Özen, Aykut; Özdemirel, Nur Evin; Department of Industrial Engineering (2008)
In this thesis, we study both dynamic and distributed facility layout problems, where the demand for product mix changes over time. We propose a new simulated annealing algorithm, SALAB, for the dynamic facility layout problem. Four variants of SALAB find the best known solution for 20 of the 48 benchmark problems from the literature, improving upon the best known solutions of 18 problems. We modify SALAB to obtain DSALAB, solving the dynamic distributed facility layout problem with the objective of minimiz...
Citation Formats
E. Dede, “Designing an information system for material management in engineer-to-order organizations,” M.S. - Master of Science, Middle East Technical University, 2006.