A conwip application in an electronics company

Download
index.pdf
2010
Güngörer, Elif
Show full item record
167
views
91
downloads
In this thesis, a real world application of the constant work in process (Conwip) system in an electronics company is realized. The aim of the application is to reduce the work in process (WIP) inventory while maintaining the same throughput level. A model is developed to determine the constant work in process level of the Conwip system for the production lines in this company. The approximated mean value analysis approach is used for the solution. Real system data are collected before and after the Conwip application. Hypothesis tests are used to compare the WIP and the throughput levels of the Conwip system with the existing push control system for a pilot production line. Results of the hypothesis tests show that the Conwip production control system can signinifcantly reduce the WIP while maintaining the same throughput rate.
Industrial engineering., TS Production Management 155-194
http://etd.lib.metu.edu.tr/upload/3/12611572/index.pdf
https://hdl.handle.net/11511/19419
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

A rescheduling problem with controllable processing times:trade-off between number of disrupted jobs and reschedulingcosts
Cincioğlu, Derya; Gürel, Sinan; Department of Industrial Engineering (2011)
In this thesis, we consider a rescheduling problem on non-identical parallel machines with controllable processing times. A period of unavailability occurs on one of the machines due to a machine failure, material shortage or broken tool. These disruptions may cause the original schedule to become ine cient and sometimes infeasible. In order to generate a new and feasible schedule, we are dealing with two conflicting measures called the e ciency and stability measures simultaneously. The e ciency measure ev...
A heuristic approach for the single machine scheduling tardiness problems
Özbakır, Saffet İlker; Kırca, Ömer; Department of Industrial Engineering (2011)
In this thesis, we study the single machine scheduling problem. Our general aim is to schedule a set of jobs to the machine with a goal to minimize tardiness value. The problem is studied for two objectives: minimizing total tardiness value and minimizing total weighted tardiness value. Solving optimally this problem is difficult, because both of the total tardiness problem and total weighted tardiness problem are NP-hard problems. Therefore, we construct a heuristic procedure for this problem. Our heuristi...
The application and evaluation of functional link net techniques in forecasting electricity demand
Yılmaz Öztürk, Işık Ekin; Güven, Yusuf Çağlar; Department of Industrial Engineering (2008)
This thesis analyzes the application of functional link-net (FLN) method in forecasting electricity demand in Turkey. Current official forecasting model (MAED), which is employed by Turkish Electricity Transmission Company (TEİAŞ) and other methods are discussed. An emprical investigation and evaluation of using functional link nets is provided.
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...
An obsolescence management framework for a defense industry company
Saygın, Nilüfer; Onay, Lamia Zeynep; Department of Business Administration (2020)
This thesis presents an analysis of the processes related to the obsolescence management of electronic components in a large scale defense industry company. These proceses are: Project Management, Research and Development, Manufacturing and Services, and Supply Chain Management. The current obsolescence problems, and the company’s reactive approach to resolving these are described. A new obsolescence management framework is proposed in order to mitigate and resolve obsolescence problems in electronic compon...
Citation Formats
E. Güngörer, “A conwip application in an electronics company,” M.S. - Master of Science, Middle East Technical University, 2010.
METU IIS - Integrated Information Service open@metu.edu.tr