Analytical models for assessing the benefits of remanufacturing

Comparison of methods for robust parameter design of products and processes with an ordered categorical response Bacanlı Karabulut, Gonca; Köksal, Gülser; Department of Industrial Engineering (2013) Robust design of products or processes with categorical response has more momentous role in industrial experiments for quality improvements, because ordinal categorical quality characteristics are encountered more frequent than continuous ones in industry. In this study, five optimization methods for an ordered categorical response are compared with each other: Logistic Regression Model Optimization (LRMO), Accumulation Analysis (AA), Weighted Signal-to-noise Ratio (WSNR), Scoring Scheme (SS), and Weighted ...
Soft Systems Methodology for design process improvement Bayraktaroğlu, Bengül; Özkan Yıldırım, Sevgi; Department of Information Systems (2018) Organizations from different business sectors, which are certified by some standardization organizations, are increasingly prioritizing the process improvement to raise their product's quality. The process improvement in these organizations has focused principally on the refinement of existing processes to improve. This thesis study describes the application of Soft Systems Methodology (SSM) for engineering design process improvement in an organization. In the concept of thesis study, it will lead to identi...
Optimization of the mechanical properties of Ti-6Al-4V alloy produced by three dimensional additive manufacturing using termochemical processes Bilgin, Güney Mert; Durucan, Caner; Esen, Ziya; Department of Metallurgical and Materials Engineering (2017) Selective laser melting (SLM) is an additive manufacturing (AM) technology used for aerospace and biomedical Ti-6Al-4V alloys to produce parts with complex geometry at one step with reduced production time, scrap and cost. However, parts produced by SLM are lack of ductility due to microstructures similar to those cast products and residual stresses generated during laser processing. In this study, Ti6Al-4V alloys produced by SLM were treated by thermo-hydrogen process (THP) to increase ductility and to ref...
Verification of empirically determined support systems of the Kılıçlar highway tunnel by numerical modelling Çelik, Gözde; Topal, Tamer; Department of Geological Engineering (2011) The aim of this study is to determine the geological and geotechnical characteristics of Kılıçlar Tunnel on Ankara-Kırıkkale Highway, to suggest the appropriate support and excavation systems and verify these suggested support systems via numerical modeling. The length of Kılıçlar Tunnel is 1110 m. The width of tunnel is 16 m, the height is 10 m and the maximum overburden height is 90 m. Since Ankara-Kırıkkale Highway consists of 2x3 lanes, the tunnel is designed as a twin tube tunnel. Kılıçlar Tunnel is pl...
Profit-oriented disassembly line balancing with stochastic task times in hybrid lines Gümüşkaya, Volkan; Bayındır, Zeynep Pelin; Altekin, Tevhide; Department of Industrial Engineering (2013) We offer a solution approach for profit-oriented disassembly line balancing problem in hybrid lines with stochastic task times. When task times are stochastic, there is a probability that some of the tasks are not completed within the predefined cycle time. For task incompletions, the most commonly used remedial actions are stopping the line or offline repairs. Stopping the line is to stop the line until the incomplete tasks are completed, while in offline repair, incomplete tasks are completed in an offlin...

Citation Formats

Z. P. Bayındır, “Analytical models for assessing the benefits of remanufacturing,” Ph.D. - Doctoral Program, Middle East Technical University, 2002.