https://hdl.handle.net/10419/76684 2026-09-14T01:51:52Z https://hdl.handle.net/10419/232987 Title: Supporting design for remanufacturing: A framework for implementing information feedback from remanufacturing to product design Authors: Lindkvist Haziri, Louise; Sundin, Erik Abstract: Remanufacturing is an industrial process turning used products into a condition of like new or better. Remanufacturing is also one strategy that salvages the value put into products during manufacturing and thus reduces the environmental impact of products over the life-cycle. However, not many products are designed for remanufacturing, and there is rarely any feedback from remanufacturing to design. Since design for remanufacturing is not applied at most manufacturing companies, there is a need to support companies, for example, by information feedback methods. By implementing feedback transfer from remanufacturing to design and employing design for remanufacturing, the remanufacturing process is more likely to be effective and efficient. The aim of this paper is to present a framework that supports design for remanufacturing by the implementation of structured feedback from remanufacturing to design. The framework aims at strategically outlining and practically implementing information feedback from remanufacturing to design. A case company where the framework has been initialised is also presented. 2020-01-01T00:00:00Z https://hdl.handle.net/10419/232986 Title: The effect of returns volume uncertainty on the dynamic performance of closed-loop supply chains Authors: Ponte, Borja; Naim, Mohamed M.; Syntetos, Aris A. Abstract: We investigate the dynamics of a hybrid manufacturing/remanufacturing system (HMRS) by exploring the impact of the average return yield and uncertainty in returns volume. Through modelling and simulation techniques, we measure the long-term variability of end-product inventories and orders issued, given its negative impact on the operational performance of supply chains, as well as the average net stock and the average backlog, in order to consider the key trade-off between service level and holding requirements. In this regard, prior studies have observed that returns may positively impact the dynamic behaviour of the HMRS. We demonstrate that this occurs as long as the intrinsic uncertainty in the volume of returns is low -increasing the return yield results in decreased fluctuations in production, which enhances the operation of the closed-loop system. Interestingly, we observe a U-shaped relationship between the inventory performance and the return yield. However, the dynamics of the supply chain may significantly suffer from returns volume uncertainty through the damaging Bullwhip phenomenon. Under this scenario, the relationship between the average return yield and the intrinsic returns volume variability determines the operational performance of closed-loop supply chains in comparison with traditional (open-loop) systems. In this sense, this research adds to the still very limited literature on the dynamic behaviour of closed-loop supply chains, whose importance is enormously growing in the current production model evolving from a linear to a circular architecture. 2020-01-01T00:00:00Z https://hdl.handle.net/10419/232989 Title: Remanufacturing: A potential sustainable solution for increasing medical equipment availability Authors: Eze, Solomon; Ijomah, Winifred; Wong, T. C. Abstract: The availability of medical equipment contributes significantly to the stability and sustainability of health care systems. However, in some countries, especially the developing ones, medical equipment availability is a major issue that remains unsolved. Hence, this paper explores the root causes of the issue, reviews existing solution approaches and suggests remanufacturing as a sustainable option. An extensive review was first conducted to uncover key factors contributing to the poor availability of medical equipment in developing countries. The Decision-Making Trial and Evaluation Laboratory (DEMATEL) method was then used to measure the prominence degrees of the key factors and characterise these factors with an aim to differentiate those that are net drivers from those that are driven. Subsequently, factors that can be addressed by remanufacturing were identified, to determine the potential contribution of remanufacturing in addressing the poor medical equipment availability issue. The result shows that remanufacturing can potentially address at least five of the key factors which account for a cumulative total prominence of 43.5%. Remanufacturing is thus, a viable strategy for improving medical equipment availability in developing countries. In addition to remanufacturing, other recommendations were also proposed to help address the issue. 2020-01-01T00:00:00Z https://hdl.handle.net/10419/232983 Title: Remanufacture of hot forging tools and dies using laser metal deposition with powder and a hard-facing alloy Stellite 21® Authors: Foster, Jim; Cullen, Crawford; Fitzpatrick, Stephen; Payne, Grant; Hall, Liza; Marashi, James Abstract: Additive Layer Manufacturing (ALM) processes are attracting interest in the forging industry due to their potential suitability for remanufacturing and repair of tools and dies. The ALM process known as Laser Metal Deposition with powder (LMD-p) can be used to provide a hard-facing alloy repair to hot forging tools. This is particularly important on complex tool geometries due their superior wear resistance. The Advanced Forming Research Centre (AFRC) has established a low cost standard test method to evaluate abrasive and adhesive wear on hot forging H13 tool steel dies on an industrial scale 160 kJ Schuler screw press. The bespoke tool design allows researchers to benchmark new and novel coatings, lubricants and additive layers against a known standard. Furthermore, AFRC metrology standard methods ensure repeatability and reproducibility of benchmark results. To evaluate the performance of LMD-p for remanufacturing of hot forging tools and dies, a cobalt based alloy (Stellite 21®) was selected. Stellite 21® is widely used as a hard-facing alloy as it provides excellent machinability coupled with superior wear characteristics. AFRC standard dies were coated with LMD-p Stellite 21®. The LMD-p coating was then machined to final geometry and then subjected to hot forging under AFRC standard conditions to compare to benchmark wear characteristics. Adhesive and abrasive wear was evaluated. It was shown that the Stellite 21® LMD-p additive layer performed better in both adhesive and abrasive conditions than standard H13 tools steel dies. 2019-01-01T00:00:00Z