On the alignment of lot sizing decisions in a remanufacturing system in the presence of random yield

Schulz, Tobias; Ferretti, Ivan

doi:10.1186/2210-4690-1-3

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…the economic and the ecological one are interconnected through balance in order to find the extreme of this connected function. When applying principles of eco-eco modeling of recycling in the circular economy, we focus on how to return products into their life cycle (Savaskan, et al 2004), process of inventory level and return (Schulz -Ferretti, 2008) as well as the character of inventory (Dyckhoff, et al 2003).…”

Section: Objective Materials and Methodologymentioning

confidence: 99%

“…Source: Schulz & Ferretti (2008) As we can see the return of products back to the manufacturer is effective not only in economic sense but environmentally as well. Based on these two facts the companies are focusing more on the planning of processes related to the return of the end-of-life products for their remanufacturing.…”

Section: Figure 4 Inventory Level In Planning In a Remanufacturingmentioning

confidence: 99%

See 1 more Smart Citation

ECO-ECO Recycling Models and Application of their Principles into the Circular Economy

Kusá¹,

Fašiang²,

Gežík³

et al. 2020

ACTA POLYTECH HUNG

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Section: Objective Materials and Methodologymentioning

confidence: 99%

Section: Figure 4 Inventory Level In Planning In a Remanufacturingmentioning

confidence: 99%

ECO-ECO Recycling Models and Application of their Principles into the Circular Economy

Kusá¹,

Fašiang²,

Gežík³

et al. 2020

ACTA POLYTECH HUNG

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“…x ∈ (20), the problem addressed in this work is NP-hard. (Note that we can always set to zero the parameters of the additional constraints of the model (1)- (15) to get model (16)- (20). )…”

Section: Problem and Computational Complexitymentioning

confidence: 99%

MRP Optimization Model for a Production System With Remanufacturing

et al. 2015

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Science and technology practitioners have been studying how to take economical, social and environmental advantage of industrial residuals and discarded products. In this sense, this paper presents a Material Requirements Planning (MRP) optimization model for a particular production system that, besides manufacturing a final product and its main assembling component, it recovers units of the component from units of the returned product as well. It is assumed that the demand for the final product is independent of the amount of the returned product available, and that the market for the final product is not segmented. Considering that all parameters of the MRP mathematical model have deterministic nature, we prove that this production planning problem is NP-hard. We also show computational experiments with the model using an optimization solver and analyze some possible industrial scenarios, as well.

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“…Sun et al (2013) investigated a manufacturing and remanufacturing system where the return rate is dependent on demand and solved the proposed problem using a three-stage stochastic dynamic programming model. Schulz and Ferretti (2011) considered the meticulousness of the remanufacturing process itself, by including the disassembly process as an explicit recovery step. The remanufacturing process thus consists of two sub processes, the disassembly process in which returns are disassembled and a rework process, where items are reworked to an as-good-as-new state.…”

Section: Introductionmentioning

confidence: 99%

A lot sizing model for two items with imperfect manufacturing process, time varying demand and return rates, dependent demand and different quality grades

Zyl

Adetunji

2022

Jnl Remanufactur

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Natural resource scarcity has accelerated considerations of return logistics in manufacturing processes. Most supply chain designs now consider a closed-loop design where demand can be satisfied by both newly manufactured goods as well as remanufactured returns, allowing for maximum value creation over the entire life cycle of a product. This paper proposes an inventory system where returns are constrained and returns that cannot be remanufactured to an as-good-as-new state of the original product can be used to satisfy a secondary demand. It is also assumed that some items fail during manufacturing and these items are treated as returns that can be remanufactured to satisfy one of two types of demand. Returns are remanufactured to one of two states such that items that may not be remanufactured to an as-good-as-new state of the first product can satisfy a secondary customer demand at a lower grade. The remanufacturing processes require some other components to be procured in order to bring the returned items back to either of the two states of reuse. A modified Wagner/Whitin model for the alternate application of remanufacturing and manufacturing for the satisfaction of the top range item demand and supplemented by a modified reverse Wagner/Whitin model for the remanufacturing of the lower variety items is derived to solve the dynamic lot sizing model proposed in this paper. The model aims to minimize cost across a horizon and the total cost proves to be very sensitive to the manufacturing setup cost and the proportion of demand returned for remanufacturing.

show abstract

On the alignment of lot sizing decisions in a remanufacturing system in the presence of random yield

Cited by 8 publications

References 22 publications

ECO-ECO Recycling Models and Application of their Principles into the Circular Economy

ECO-ECO Recycling Models and Application of their Principles into the Circular Economy

MRP Optimization Model for a Production System With Remanufacturing

A lot sizing model for two items with imperfect manufacturing process, time varying demand and return rates, dependent demand and different quality grades

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