A model to investigate effects of competition on the level of remanufacturability

2019-08-28
EFFECTS OF COMPETITION ON PRODUCT RECOVERY DECISIONSZ. Pelin Bayindir, Can Baris Cetin, Ismail Serdar BakalOne of the commonly implemented value recovery method is remanufacturing. Remanufacturability of end-of-life product is proportional to its remanufacturability level, which is set at the beginning of life cycle of the product by the original equipment manufacturer (OEM). Firms can make remanufacturing at the later periods of product’s life cycle since end of life products should be accumulated. Another issue is not knowing which returned items are suitable for remanufacturing operations, i.e., sorting information is not readily available, hence remanufacturing process to have yield loss. When the original product is designed and produced for remanufacturing, other firms also engage in remanufacturing. These are called independent remanufacturers (IR). As a result, competition arise in the remanufactured product market. The design decisions by OEM affect IR’s remanufacturing process efficiency as well. In this study, we have the following main research questions: 1.What are the equilibrium manufacturing quantity, remanufacturability level and remanufacturing quantities of OEM and IR? 2.How does the following affect the economic and environmental performances of OEM and IR? a)entry of a competitor in remanufactured product market, b)availability of sorting information c)OEM ignoring a potential entrant. In order to gain insights on these, we introduce several stylized models. We consider a two-period setting. In the first period, the OEM determines the level of investment on the remanufacturability of the product and the number of new products to manufacture. In the second period, a certain fraction of manufactured items by OEM are shared by OEM and IR and thy determines number of units to remanufacture. The yield of the remanufacturing process depends on the investment made by the OEM. A quantity sensitive price function is used. We build models for both monopolistic and duopolistic settings with and without perfect sorting information. Our results reveal that competition has negative effects on profits. Sorting information increases the profits unless it is available for only OEM. Effects of competition and sorting information to environmental performance is sensitive to the problem parameters. Lack of competition awareness of OEM always decreases OEM’s profit and always increases remanufacturability investment.

Suggestions

Determination of recovery effort for a probabilistic recovery system under various inventory control policies
Bayındır, Zeynep Pelin; Porras, E (Elsevier BV, 2006-12-01)
In this study we investigate the desired level of recovery under various inventory control policies when the success of recovery is probabilistic. All the used and returned items go into a recovery process that is modelled as a single stage operation. The recovery effort is represented by the expected time spent for it. The effect of increasing recovery effort on the success probability together with unit cost of the operation is included by assuming general forms of dependencies. Alternative to recovered i...
A heuristic approach for profit oriented disassembly lot-sizing problem
Kaya, Melike; Bayındır, Zeynep Pelin; Çetinkaya, Ferda Can; Department of Industrial Engineering (2011)
In this thesis, we work on adisassembly lot-sizing problem for multiple products with parts commonality,i.e., general product structure. We assume that supply of discarded products is infinite. When a product (or a subassembly) is disassembled, all its immediate child items are obtained,i.e., complete disassembly case.Intermediate and leaf items obtained are demandedbyexternal suppliers or remanufacturers. The maximum possible salesfor each intermediate and leaf item are known.Sales of the intermediate and ...
A structured kinetic model for recombinant protein production by Mut(+) strain of Pichia pastoris
Celik, Eda; Çalık, Pınar; Oliver, Stephen G. (2009-12-01)
A structured kinetic biochemical model for Pichia pastoris growth and recombinant protein production, able to predict r-protein production and optimize the feeding strategy is reported. Pichia pastoris was divided into three compartments, the recombinant product human erythropoietin (rHuEPO) was considered in one compartment, alcohol oxidase and extracellular protease enzymes were assembled in the enzymatic compartment, and rest of the cell components (including intracellular proteases) were gathered in the...
A model to evaluate inventory costs in a remanufacturing environment
Bayındır, Zeynep Pelin; Gullu, R (Elsevier BV, 2003-01-11)
In this study we investigate possible benefits of remanufacturing in inventory-related costs. In order to examine the conditions on different system parameters that make the remanufacturing option cost attractive, the return ratio is considered as a decision variable. The production environment, where the manufacturing and remanufacturing require both common and separate operations, together with the supplier's operations for the new parts and useful lifetime of the product is modeled as a queuing network. ...
A model to evaluate inventory costs in a remanufacturing environment
Bayındır, Zeynep Pelin; Güllü, Ahmet Refik (2000-08-20)
In this study we investigate possible benefits of remanufacturing in inventory-related costs. In order to examine the conditions on different system parameters that make the remanufacturing option cost attractive, the return ratio is considered as a decision variable. The production environment, where the manufacturing and remanufacturing require both common and separate operations, together with the supplier's operations for the new parts and useful lifetime of the product is modeled as a queuing network. ...
Citation Formats
Z. P. Bayındır and İ. S. Bakal, “A model to investigate effects of competition on the level of remanufacturability,” 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87767.