Artykuły w czasopismach: „Component Remanufacturing”

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Wang, Yue, Baoying Xin, Zhe Wang i Bangyi Li. "Managing Supplier-Manufacturer Closed-Loop Supply Chain Considering Product Design and Take-Back Legislation". International Journal of Environmental Research and Public Health 16, nr 4 (20.02.2019): 623. http://dx.doi.org/10.3390/ijerph16040623.

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Facing a growing amount of waste electrical and electronic equipment (WEEE), a recent recast of the WEEE directive has put a specific reuse target for manufacturers, aiming to reduce environmental pollution and incentivize a green product design. In this paper, in order to examine whether the above two goals can be achieved by setting a specific reuse target, we have modelled a closed-loop supply chain consisting of a supplier (the leader) and a manufacturer (the follower) with the constraint of a mandated remanufacturing target. In this model, the supplier determines the level of interchangeability in product design and the wholesale price of the key component. The manufacturer buys the key components from the supplier and makes production and remanufacturing decisions under the requirement of a mandated remanufacturing target. We have investigated the supply chain’s members’ optimal decisions and analyzed the impact of the mandated remanufacturing target on the optimal profits of the supply chain’s members and consumer surplus, and finally, we have explored the environmental implications of the mandated remanufacturing target. We found that the supply chain’s members’ optimal decisions are affected by the mandated remanufacturing target and the cost of the new component. In terms of the economic implications of the mandated remanufacturing target, we have demonstrated that the increase in the mandated remanufacturing target has negative effects on the profits of the supply chain’s members and consumer surplus. Regarding the goal of incentivizing green product design, we found that the mandated remanufacturing target cannot always incentivize the supplier to implement product design that is beneficial to remanufacturing. From the perspective of the environment, we further indicate that more stringent mandated remanufacturing targets may bring an undesirable environmental outcome.

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Lawand, Lydia, Massimo Panarotto, Petter Andersson, Ola Isaksson i Michael Kokkolaras. "Dynamic Lifecycle Cost Modeling for Adaptable Design Optimization of Additively Remanufactured Aeroengine Components". Aerospace 7, nr 8 (31.07.2020): 110. http://dx.doi.org/10.3390/aerospace7080110.

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Additive manufacturing (AM) is being used increasingly for repair and remanufacturing of aeroengine components. This enables the consideration of a design margin approach to satisfy changing requirements, in which component lifespan can be optimized for different lifecycle scenarios. This paradigm requires lifecycle cost (LCC) modeling; however, the LCC models available in the literature consider mostly the manufacturing of a component, not its repair or remanufacturing. There is thus a need for an LCC model that can consider AM for repair/remanufacturing to quantify corresponding costs and benefits. This paper presents a dynamic LCC model that estimates cumulative costs over the in-service phase and a nested design optimization problem formulation that determines the optimal component lifespan range to minimize overall cost while maximizing performance. The developed methodology is demonstrated by means of an aeroengine turbine rear structure.

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Subramanian, Ravi, Mark E. Ferguson i L. Beril Toktay. "Remanufacturing and the Component Commonality Decision". Production and Operations Management 22, nr 1 (1.05.2012): 36–53. http://dx.doi.org/10.1111/j.1937-5956.2012.01350.x.

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Wu, Bin, Bin-shi Xu, Xue-dong Jing, Cun-long Liu i Bin Zhang. "Automatic brush-plating technology for component remanufacturing". Journal of Central South University of Technology 12, nr 2 (październik 2005): 199–202. http://dx.doi.org/10.1007/s11771-005-0040-y.

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Mad Yusoh, Siti Syahara, Dzuraidah Abd Wahab, Hiyam Adil Habeeb i Abdul Hadi Azman. "Intelligent systems for additive manufacturing-based repair in remanufacturing: a systematic review of its potential". PeerJ Computer Science 7 (10.12.2021): e808. http://dx.doi.org/10.7717/peerj-cs.808.

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The conventional component repair in remanufacturing involves human decision making that is influenced by several factors such as conditions of incoming cores, modes of failure, severity of damage, features and geometric complexities of cores and types of reparation required. Repair can be enhanced through automation using additive manufacturing (AM) technology. Advancements in AM have led to the development of directed energy deposition and laser cladding technology for repair of damaged parts and components. The objective of this systematic literature review is to ascertain how intelligent systems can be integrated into AM-based repair, through artificial intelligence (AI) approaches capable of supporting the nature and process of decision making during repair. The integration of intelligent systems in AM repair is expected to enhance resource utilization and repair efficiency during remanufacturing. Based on a systematic literature review of articles published during 2005–2021, the study analyses the activities of conventional repair in remanufacturing, trends in the applications of AM for repair using the current state-of-the-art technology and how AI has been deployed to facilitate repair. The study concludes with suggestions on research areas and opportunities that will further enhance the automation of component repair during remanufacturing using intelligent AM systems.

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Wang, F., Z. Q. Yin, X. H. Sun, X. D. Gong, L. Kou, Z. T. Zhan, X. H. Ni i in. "Additive remanufacturing of coupler knuckle based on robotic gas metal arc welding". Journal of Physics: Conference Series 2045, nr 1 (1.10.2021): 012009. http://dx.doi.org/10.1088/1742-6596/2045/1/012009.

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Abstract Take the wear parts of coupler knuckle as an example, the “Modeling—Slicing — Stacking” mode remanufacturing process is studied. First, the 3D model of the of the worn coupler knuckle surface is acquired by structured light 3D detection. The remanufacturing model of the failure part is built by Boolean operation between the original model and the acquired 3D model. Second, the user can slice layer of the remanufacturing model according to the remanufacturing stacking parameters. The zone that surrounded by the contour of each sliced layer is the robotic GMAW remanufacturing stack region. Third, the robotic GMAW remanufacturing path is planed within the region mentioned above and the executable program is generated to carry out the remanufacturing task layer by layer. Moreover, the worn coupler knuckle was repaired by adopting Robotic GMAW Process. The mechanical performances of component were tested, the results indicate that the remanufactured coupler knuckle satisfying the operating requirements.

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Wang, Wenyuan, Yue Wang, Daniel Mo i Mitchell Tseng. "Component Reuse in Remanufacturing Across Multiple Product Generations". Procedia CIRP 63 (2017): 704–8. http://dx.doi.org/10.1016/j.procir.2017.02.033.

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Kanazawa, Tomohisa, Mitsutaka Matsumoto, Mitsuhiro Yoshimoto i Kiyotaka Tahara. "Environmental Impact of Remanufacturing Mining Machinery". Sustainability 14, nr 13 (2.07.2022): 8118. http://dx.doi.org/10.3390/su14138118.

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In this study, we assessed the environmental impact of the remanufacturing of mining machinery components, by analyzing commonly used parts in a machine setup. No previous studies have conducted a detailed environmental impact assessment of any manufacturing processes for new or remanufactured components used in mining machinery. We analyzed the system boundaries and conducted inventory analysis to understand their function and determine their unit role in the machine. Then, we evaluated the environmental impacts of the manufacturing processes for the subparts and assy parts, along with the impact of logistic and remanufacturing processes. In particular, we assessed hydraulic equipment, which is a common component of mining machinery, and conducted a comparative assessment of the environmental impacts of new and remanufactured components. Our results indicated that the global warming potential (GWP) per mining machine throughout its lifecycle (LC) could be reduced by ~194 ton-CO2eq./LC. Assuming that the number of mining machinery in operation at a global scale is 571 machines (or units) per year, the GWP would be reduced by ~110,000 ton-CO2eq./year.

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Deng, Weisheng. "Does Remanufacturing Always Benefit the Manufacturer and Hurt the Supplier?" Sustainability 11, nr 6 (25.03.2019): 1805. http://dx.doi.org/10.3390/su11061805.

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Traditional wisdom claims that remanufacturing operations always benefit the manufacturer in monopolistic cases and hurt the supplier in a supply chain system. However, we show that this claim does not hold when firms face a mature market. In particular, we consider a case in which some consumers in the market possess old products before the selling season, i.e., some consumers are holders. A monopolistic manufacturer collects used products from holders and then sells the products to non-holders after furbishing and remanufacturing. In the integrated case, the manufacturer performs manufacturing and remanufacturing together. We find that remanufacturing may hurt the manufacturer when the fraction of non-holders in the market and the production cost are both low. In the separated case, in which an upstream supplier provides the core component to a downstream manufacturer, the downstream manufacturer undertakes the remanufacturing operation as well as manufacturing. We find that the supplier can benefit from the manufacturer’s remanufacturing operation under a specific condition, even if the manufacturer always receives a higher profit.

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Lu, Ru Sheng, Bin Xu, He Ting Huang, Guo Sheng Zhang i Zhi Xin Wu. "Application of Cleaning Technology in the Remanufacturing for Loader's Axles and Transmission Box Components". Applied Mechanics and Materials 397-400 (wrzesień 2013): 25–28. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.25.

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The high-efficiency cleaning is one of the key technologies in the remanufacturing process. It is the premise and guarantee for remanufactured core inspection and machining. It also is an important link to improve quality and reliability of remanufactured products. On the basis of analyzing the structural feature, working conditions and main dirt of worn-out or discarded component of axles and transmission of construction machinery, the remanufacturing cleaning technology is discussed.

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Wang, Wenyuan, Yue Wang, Daniel Mo i Mitchell M. Tseng. "Managing component reuse in remanufacturing under product diffusion dynamics". International Journal of Production Economics 183 (styczeń 2017): 551–60. http://dx.doi.org/10.1016/j.ijpe.2016.06.010.

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Sato, Naoko, Mitsutaka Matsumoto, Hisato Ogiso i Harumichi Sato. "Challenges of Remanufacturing Using Powder Bed Fusion Based Additive Manufacturing". International Journal of Automation Technology 16, nr 6 (5.11.2022): 773–82. http://dx.doi.org/10.20965/ijat.2022.p0773.

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Remanufacturing is an industrial process of turning used products into products with the same quality as new ones. Of the processes comprising remanufacturing, the repair process poses the greatest challenge. Additive manufacturing (AM) is expected to bring innovation to the repair process of remanufacturing. Although, so far, the directed energy deposition (DED) type AM has been most frequently applied to remanufacturing and only a few studies applied powder bed fusion (PBF) type AM to remanufacturing, PBF demonstrates great potential for application in remanufacturing. This study aims to assess the feasibility of the application of PBF to remanufacturing. We conducted an experimental PBF-based repair and attempted to identify its challenges. In the experiment, 1) we used AlSi10Mg powder, 2) we first fabricated a 5 mm square cube sample by using PBF, 3) we next removed 0.4 mm of thickness from the sample with milling, 4) then we restored 0.44 mm of thickness using PBF, and 5) we observed the restored sample. The observation showed that: 1) misalignment in the restoration occurred, 2) keyhole defects and gas pores were found more in the boundary area between the original and restored parts, and 3) the microstructures showed polycrystals in the restored part. These factors impaired the quality and reliability of PBF-based repair and present challenges of enhancing the feasibility of applying PBF-based repair to remanufacturing. This study also examined the whole process of PBF-based remanufacturing, which includes not only the repair process but also the processes of component inspection, process design, pre-repair process, and post-repair process, and discussed the challenges in these processes. The challenges include the development of repair process design methods, supportless fabrication processes, and non-destructive test (NDT) techniques.

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Saboori, Abdollah, Alberta Aversa, Giulio Marchese, Sara Biamino, Mariangela Lombardi i Paolo Fino. "Application of Directed Energy Deposition-Based Additive Manufacturing in Repair". Applied Sciences 9, nr 16 (13.08.2019): 3316. http://dx.doi.org/10.3390/app9163316.

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In the circular economy, products, components, and materials are aimed to be kept at the utility and value all the lifetime. For this purpose, repair and remanufacturing are highly considered as proper techniques to return the value of the product during its life. Directed Energy Deposition (DED) is a very flexible type of additive manufacturing (AM), and among the AM techniques, it is most suitable for repairing and remanufacturing automotive and aerospace components. Its application allows damaged component to be repaired, and material lost in service to be replaced to restore the part to its original shape. In the past, tungsten inert gas welding was used as the main repair method. However, its heat affected zone is larger, and the quality is inferior. In comparison with the conventional welding processes, repair via DED has more advantages, including lower heat input, warpage and distortion, higher cooling rate, lower dilution rate, excellent metallurgical bonding between the deposited layers, high precision, and suitability for full automation. Hence, the proposed repairing method based on DED appears to be a capable method of repairing. Therefore, the focus of this study was to present an overview of the DED process and its role in the repairing of metallic components. The outcomes of this study confirm the significant capability of DED process as a repair and remanufacturing technology.

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Saiz, Fátima A., Garazi Alfaro i Iñigo Barandiaran. "An Inspection and Classification System for Automotive Component Remanufacturing Industry Based on Ensemble Learning". Information 12, nr 12 (23.11.2021): 489. http://dx.doi.org/10.3390/info12120489.

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This paper presents an automated inspection and classification system for automotive component remanufacturing industry, based on ensemble learning. The system is based on different stages allowing to classify the components as good, rectifiable or rejection according to the manufacturer criteria. A study of two deep learning-based models’ performance when used individually and when using an ensemble of them is carried out, obtaining an improvement of 7% in accuracy in the ensemble. The results of the test set demonstrate the successful performance of the system in terms of component classification.

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Liu, Wenjie, Jing Zhang, Chenfan Wu i Xiangyun Chang. "Identifying key industry factors of remanufacturing industry using grey incidence analysis". Grey Systems: Theory and Application 6, nr 3 (7.11.2016): 398–414. http://dx.doi.org/10.1108/gs-08-2016-0016.

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Purpose The purpose of this paper is to identify most favorable (or quasi-preferred) industry characteristics of remanufacturing industry and most favorable (or quasi-preferred) industry factors which have an effect on these characteristics so as to improve these factors. Design/methodology/approach Grey system theory has prominent advantage of using few data and uncertainty information to analyze many factors. Therefore, it is more suited for system analysis than traditional statistical analysis methods like regression analysis, variance analysis and principal component analysis, which require massive data, certain probability distribution in the data and few variant factors. So in this paper, grey incidence analysis method, which is an important part of grey system theory, is used to identify industry characteristics and key industry factor of remanufacturing industry in China and then put forward appropriate industrial policies and countermeasures to improve these industry factors. Findings According to the results of this study, it reveals that there are no most favorable industry characteristics and no most favorable industry factors in remanufacturing industry of China. “Annual sale of remanufacturing industry” is identified as quasi-preferred industry characteristic, and “total number of employees with master degree or above in remanufacturing enterprise” is identified as the quasi-preferred industry factor. “Total building area of remanufacturing enterprise” is referred as the most unfavorable industry factors. Practical implications Judging from the findings of this study, four practical implications are summarized as follows: “annual sale of remanufacturing industry” should be given great importance because it is a quasi-preferred industry characteristic. “Total number of employees with master degree or above in remanufacturing enterprise” and “total number of research institution and university participated in remanufacturing” should be further strengthened by establishing an industry-university-research institute collaboration network, due to the fact that they are the top two quasi-preferred industry factors. “Total investment of remanufacturing industry” and “total annual R&D expenditures” have not played their due role in improving remanufacturing industry, so they should be moderately controlled so as to reduce waste of investment. “Total building area of remanufacturing enterprise” must be strictly controlled because of its little impact on remanufacturing industry. Originality/value In this research, grey incidence analysis is applied to identify key industry factors of remanufacturing industry for the first time. It helps in finding industry factors which are in urgent need of improvement and assists in making appropriate industrial policies and countermeasures to improve them by studying relationships between industry characteristic and industry factors.

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Zhang, Xing Hui, i Jian Xin Zhang. "Research on Disassembling Equipment for Construction Machinery Hydraulic Cylinder". Advanced Materials Research 989-994 (lipiec 2014): 3323–27. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3323.

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Construction machinery hydraulic cylinder is usually discarded after service cycle. The residual value of discarded products can be recycled greatly by remanufacturing. Disassembly and assembly is the key process in hydraulic cylinder remanufacturing. The construction machinery hydraulic cylinder disassembly and assembly equipment is developed. Hydraulic power is adopted in this equipment. The clamping, positioning of cylinder tube is realized by hydraulic clamping mechanism automatically. The piston component pulling out or into cylinder tube is realized by hydraulic working mechanism automatically. This equipment has been applied successfully in the project of "key technology and equipment for construction machinery parts remanufacturing" in a research institute. The results indicate that the application of this equipment will not only increase the automaticity and efficiency remarkably, but also reduce the damage to hydraulic cylinder key part greatly.

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Zhang, Xinchang, Wenyuan Cui, Wei Li i Frank Liou. "A Hybrid Process Integrating Reverse Engineering, Pre-Repair Processing, Additive Manufacturing, and Material Testing for Component Remanufacturing". Materials 12, nr 12 (18.06.2019): 1961. http://dx.doi.org/10.3390/ma12121961.

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Metallic components can gain defects such as dents, cracks, wear, heat checks, deformation, etc., that need to be repaired before reinserting into service for extending the lifespan of these parts. In this study, a hybrid process was developed to integrate reverse engineering, pre-repair processing, additive manufacturing, and material testing for the purpose of part remanufacturing. Worn components with varied defects were scanned using a 3D scanner to recreate the three-dimensional models. Pre-repair processing methods which include pre-repair machining and heat-treatment were introduced. Strategies for pre-repair machining of defects including surface impact damage, surface superficial damage and cracking were presented. Pre-repair heat-treatment procedure for H13 tool steel which was widely used in die/mold application was introduced. Repair volume reconstruction methodology was developed to regain the missing geometry on worn parts. The repair volume provides a geometry that should be restored in the additive manufacturing process. A damaged component was repaired using the directed energy deposition process to rebuild the worn geometry. The repaired part was inspected in microstructure and mechanical aspects to evaluate the repair. The hybrid process solved key issues associated with repair, providing a solution for automated metallic component remanufacturing.

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Paprocka, Iwona, i Bożena Skołud. "A Predictive Approach for Disassembly Line Balancing Problems". Sensors 22, nr 10 (22.05.2022): 3920. http://dx.doi.org/10.3390/s22103920.

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In selective serial disassembly sequence planning, when the target node (component) is reached, the selective disassembly task is completed and the refurbished component is repaired, reused or remanufactured. Since the efficient utilization of existing resources is necessary, it is crucial to predict disassembly operation times and the condition of joints for recycling, reusing or remanufacturing. The method of estimating the disassembly times of a joint if it is intended for remanufacturing, recycling and reuse is an important and urgent requirement for research development and results. The aim of the paper is to investigate the disassembly system with predicted operation times and the quality of product connections (joints) in order to balance the line smoothness index, to minimize a line time factor, line efficiency and profit and minimize an ex post error. Disassembly times for remanufacturing, recycling and reuse are estimated separately based on the historical data of disassembly times and the quality of joints. The presented estimation method of disassembly operation times increases the reliability and efficiency of elaborated balances of tasks in lines. Underestimated disassembly operation times can be compensated for during the idle points in the successive cycles, provided that the transport operations are performed manually and that travel time determines the cycle time.

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Xue, Nan, Li Hong Dong, Bin Shi Xu, Cheng Chen i Shi Yun Dong. "Characterization of Fatigue Damage of Crankshaft Remanufacturing Core by Two-Dimensional Magnetic Memory Signal". Advanced Materials Research 538-541 (czerwiec 2012): 1588–93. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1588.

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Fatigue damage degree of crankshaft remanufacturing core was studied based on Metal Magnetic Memory Testing. Bending fatigue test of crankshaft remanufacturing core was conducted on the resonant fatigue test rig and variations of two-dimensional magnetic memory signal distribution in crankshaft pin fillets were studied at different bending fatigue cycle. Experimental research shows that distributions of Hp(x) signals, namely, tangential component of spontaneous stray field and Hp(y) signals, namely, normal component of spontaneous stray field in crankshaft pin fillets have no obvious change with loading cycle when no crack initiation and propagation occur in crankshaft pin fillets. Characteristics of Hp(x) and Hp(y) signal both show dynamic variations when crack in crankshaft pin fillets initiates and extends at medium rate or high rate. Metal Magnetic Memory Testing is a dynamic method for monitoring fatigue crack propagation in crankshaft.

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Lahrour, Yahya, i Daniel Brissaud. "A Technical Assessment of Product/Component Re-manufacturability for Additive Remanufacturing". Procedia CIRP 69 (2018): 142–47. http://dx.doi.org/10.1016/j.procir.2017.11.105.

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Han, S. H., M. Y. Dong, S. X. Lu, S. C. H. Leung i M. K. Lim. "Production planning for hybrid remanufacturing and manufacturing system with component recovery". Journal of the Operational Research Society 64, nr 10 (październik 2013): 1447–60. http://dx.doi.org/10.1057/jors.2012.106.

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Zhang, Xiao-qing, i Xi-gang Yuan. "The System Dynamics Model in Electronic Products Closed-Loop Supply Chain Distribution Network with Three-Way Recovery and the Old-for-New Policy". Discrete Dynamics in Nature and Society 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/4074710.

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With the technological developments and rapid changes in demand pattern, diverse varieties of electronic products are entering into the market with reduced lifecycle which leads to the environmental problems. The awareness of electronic products take-back and recovery has been increasing in electronic products supply chains. In this paper, we build a system dynamics model for electronic products closed-loop supply chain distribution network with the old-for-new policy and three electronic products recovery ways, namely, electronic products remanufacturing, electronic component reuse and remanufacturing, and electronic raw material recovery. In the simulation study, we investigate the significance of various factors including the old-for-new policy, collection and remanufacturing, their interactions and the type of their impact on bullwhip, and profitability through sensitivity analysis. Our results instruct that the old-for-new policy and three electronic products recovery ways can reduce the bullwhip effect in the retailers and the distributors and increases the profitability in the closed-loop supply chain distribution network.

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Darma Catur Kurniawan, Muqimuddin i Muhamad Imron Zamzani. "Identifikasi Waste pada Proses Remanufaktur Blade Lift Cylinder D-8R dengan Pendekatan Lean Manufacturing". JURNAL TEKNIK INDUSTRI 12, nr 2 (21.12.2022): 153–60. http://dx.doi.org/10.25105/jti.v12i2.15641.

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Intisari— Blade Lift Cylinder D-8R merupakan salah satu komponen hidrolik alat berat. Dampak dari banyaknya remanufaktur terhadap komponen blade lift cylinder D-8R ini menyebabkan leadtime pengiriman ke pelanggan menjadi lama. Hal ini akhirnya merugikan perusahaan dan juga pelanggan secara tidak langsung. Kajian awal mengungkapkan bahwa leadtime disebabkan oleh jumlah pemborosan (waste) pada proses produksi komponen blade lift cylinderD-8R. Adapun anlaisis terhadap pemborosan pada proses remanufaktur blade lift cylinder D-8R dapat menjadi strategi pilihan. Pada penelitian ini menggunakan lean manufacturing sebagai pendekatan analisis 7 pemborosan. Hasil penelitian menunjukan nilai Process Cycle Efficiency (PCE) Current Value Stream Mapping (CVSM) sebesar 30,4%, kemudian nilai PCE pada kondisi perbaikan Future Stream Mapping (FVSM) meningkat menjadi 84,6%. Dari hasil ini dapat diketahui adanya kenaikan sebesar 54,2%. Penurunan leadtime remanufaktur blade lift cylinder D-8R sekitar 10406 menit atau sekitar 63,9%. Dengan demikian, Pemborosan pada proses remanufaktur komponen blade lift cylinder D-8R dengan pendekatan Lean Manufacturing dapat diidentifikasi dan leadtime menurun lebih dari separuh leadtime pada kondisi awal. Abstract— Blade Lift Cylinder D-8R is one of the hydraulic components of heavy equipment. The impact of the many remanufacturing of the blade lift cylinder components of the D-8R causes long lead times for delivery to customers. This ultimately harms the company and also the customers indirectly. Preliminary studies reveal that leadtime is caused by the amount of waste in the production process of the blade lift cylinderD-8R component. The analysis of waste in the remanufacturing process of the D-8R blade lift cylinder can be the strategy of choice. In this study, lean manufacturing is used as a waste analysis approach. The results showed that the Process Cycle Efficiency (PCE) Current Value Stream Mapping (CVSM) was 30.4%, then the PCE value in the improved condition of Future Stream Mapping (FVSM) increased to 84.6%. From these results, it can be seen that there was an increase of 54.2%. The decrease in leadtime for remanufacturing the blade lift cylinder of the D-8R is about 10406 minutes or about 63.9%. Thus, waste in the remanufacturing process of the blade lift cylinder component of the D-8R with the Lean Manufacturing approach can be identified and leadtime is reduced by more than half of the leadtime in the initial condition.

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Meng, Wei, i Xiufen Zhang. "Optimization of Remanufacturing Disassembly Line Balance Considering Multiple Failures and Material Hazards". Sustainability 12, nr 18 (7.09.2020): 7318. http://dx.doi.org/10.3390/su12187318.

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End-of-life (EOL) electromechanical products often have multiple failure characteristics and material hazard attributes. These factors create uncertain disassembly task sequences and affect the remanufacturing cost, environmental sustainability, and disassembly efficiency of the remanufacturing disassembly line system. To address this problem, a novel multi-constraint remanufacturing disassembly line balancing model (MC-RDLBM) is constructed in this article, which accounts for the failure characteristics of the parts and material hazard constraints. To assign the disassembly task reasonably, a disassembly priority decision-making model was presented to describe the relationship between the failure layer, the material hazards layer, and the economic feasibility layer. Furthermore, the multi-objective non-dominated sorting genetic algorithm II (NSGA-II) optimization for the MC-RDLBM is improved. To increase the convergence speed of the algorithm, an initial population construction method is designed, which includes the component failure and material hazards. Moreover, a novel genetic algorithm evolution rule with a Pareto non-dominant relation and crowded distance constraint is established, which expands the search scope of the chromosome’s autonomous evolution and avoids local convergence. Furthermore, a Pareto grade-based evaluation strategy for non-dominant solutions is proposed to eliminate the invalid remanufacturing disassembly task sequences. Finally, a case study verified the effectiveness and feasibility of the proposed method.

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Zhang, Tong Zhu, Xue Ping Wang, Jiang Wei Chu, Peng Fei Cui i Guang Dong Tian. "Quality Control and Reliability Analysis of Remanufactured Automotive Products". Applied Mechanics and Materials 29-32 (sierpień 2010): 2233–37. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.2233.

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reliability performance is an important evaluation index of product quality, especially for the remanufactured product. Automobile products remanufacturing is an important and effective technology method to develop circular economy in automotive industry. The quality control and reliability problem of remanufactured products are quite different from the original ones. It is necessary to ensure the stability of the remanufactured products qualification in order to eliminate the public bias that remanufactured products are second hand products, and enhance their acceptance and market occupancy. This paper gives the reliability requirements of remanufactured automotive products, points out the factors restricting the quality and reliability, puts forward the reliability performance at the product level and component level, and then introduces the FMEA, failure analysis, their relationship and application in automotive products remanufacturing.

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Yu, Jae-Min, i Dong-Ho Lee. "Scheduling algorithms for job-shop-type remanufacturing systems with component matching requirement". Computers & Industrial Engineering 120 (czerwiec 2018): 266–78. http://dx.doi.org/10.1016/j.cie.2018.04.048.

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Ke, Chao, Xiuyan Pan, Pan Wan, Zixi Huang i Zhigang Jiang. "An Intelligent Redesign Method for Used Products Based on Digital Twin". Sustainability 15, nr 12 (17.06.2023): 9702. http://dx.doi.org/10.3390/su15129702.

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Remanufacturing used products is an important technological approach in sustainable development and circular economy. Meanwhile, redesign is the key component of remanufacturing, as it can innovate the function and structure of used products. However, due to the uncertain quality, variety, and small batches of the returned used products for remanufacturing, it is difficult to generate a sound redesign scheme to satisfy the customer demand quickly and dynamically. In addition, it is unpredictable whether the redesign scheme is suitable for the remanufacturing processes, which may lead to additional remanufacturing costs. In order to improve the efficiency of design and obtain the optimal design scheme, it is necessary to use intelligent technology to quickly generate and optimize the redesign scheme. To address this, an intelligent redesign method for used products based on the digital twin is proposed in this paper. Digital twin (DT) technology can connect the physical world with the virtual world and use the virtual model to simulate the redesign process, which is conducive to the dynamic adjustment and optimization of the redesign scheme. Firstly, the redesign process framework is constructed based on the axiomatic design (AD) method, and the redesign features of the used products are analyzed to determine the redesign problems. Then, based on the connotation of a digital twin, an intelligent redesign framework is constructed, which provides detailed guidance for building the digital-twin-driven redesign system. Henceforth, the application of the redesign process based on a digital twin is discussed, a technical approach of the digital-twin-driven redesign is proposed, and data processing methods, such as data cleaning, data integration, and data analysis, are used to realize the redesign scheme decision. Finally, the feasibility of this method is verified by the redesign of a used clutch.

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Tu, Shan Tung. "Some Fundamental Aspects of Redesign and Remanufacture of High Temperature Components". Advanced Materials Research 44-46 (czerwiec 2008): 25–32. http://dx.doi.org/10.4028/www.scientific.net/amr.44-46.25.

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The impact of remanufacturing on the conservation of energy and resources has been well recognized during the last decade. When the relevant technologies are applied for high temperature components in power and process industries, a redesign of the component life should be required due to the time-dependent feature of high temperature failure. In order to provide some fundamentals for redesign and remanufacture of high temperature components, mechanical behavior of a two-bar structure with one bar being remanufactured is analyzed. An optimal repairing time is given. From the viewpoint of creep damage, various high temperature structures are analyzed by using damage coupled finite element method. Suggestions for life extension remanufacture are proposed for typical high temperature components.

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Sun, Qingchao, Bowen Shi, Xiaokai Mu i Kepeng Sun. "Fatigue Strength Evaluation for Remanufacturing Impeller of Centrifugal Compressor Based on Modified Grey Relational Model". Advances in Materials Science and Engineering 2020 (30.01.2020): 1–11. http://dx.doi.org/10.1155/2020/1236130.

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The fatigue strength, as the essential basis of residual life evaluation, is required to be obtained timely for remanufacturing. Since impeller damage is characterized with very-high-cycle fatigue (VHCF), it is difficult to directly test the strength data. The transformation method of multisource strength data is proposed to predict fatigue strength for impeller based on grey relational theory. The multisource strength data, as factor space, primarily include available existing experimental data and operating data, while the strength data of the remanufacturing impeller are taken as target data. The fatigue strength model of material and component are presented to analyze the influence factors of remanufacturing target strength. And similar material provides a theoretical basis for selecting reference data reasonably. Considering the correlation and difference between available data and target data, the grey relational function is established, and the correction function of the target residual is brought forward to reduce the transformation deviation. The entropy-weight theory is implemented to determine the different impacts of multisource data on target strength. A test case, predicting the unknown impeller fatigue strength with various impellers, is applied to validate the proposed transformation method, and the results show that the predicted strength data are consistent with the experimental data well.

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Liu, Weiwei, Yongxin Zhao, Huanqiang Liu, Bingjun Liu, Tao Li i Shujie Liu. "Numerical analysis on flow and surface topography of the molten pool in laser additive remanufacturing". Green Manufacturing Open 1, nr 3 (2023): 12. http://dx.doi.org/10.20517/gmo.2023.03.

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Laser additive remanufacturing technology is an important technology in the field of manufacturing technology innovation and development, which has largely revolutionized the design and manufacturing mode of high-end devices to a large extent, and is a key component of green remanufacturing that can effectively promote the sustainable and sound development of the manufacturing industry. A multiphase model of laser additive remanufacturing with pulsed lasers is developed to analyze the evolution of the molten pool, the trend of the surface tension for different process parameters, and their relation to the molten pool morphology. The results demonstrate that the maximum flow velocity at the surface of the molten pool is inversely proportional to the pulsed laser frequency and to the duty ratio. While the trend of the height of the cladding layer corresponds to the trend of the heat accumulation in the molten pool, the width and penetration depth of the cladding layer are governed by the size of the heat-affected zone. The cladding layer and substrate will have poor metallurgical bonding if the pulsed laser frequency is too high. When the duty ratio is too large, the likelihood of over-melting increases, affecting the substrate properties and increasing the surface roughness, which is detrimental to the surface finish of the cladding layer.

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Sundararaman, Malolan, i Mathirajan Muthu. "Component remanufacturing: a new prospective profitable business approach for the Indian automobile sector". OPSEARCH 57, nr 4 (29.05.2020): 1244–80. http://dx.doi.org/10.1007/s12597-020-00457-6.

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Wang, Wenyuan, Daniel Y. Mo, Yue Wang i Mitchell M. Tseng. "Assessing the cost structure of component reuse in a product family for remanufacturing". Journal of Intelligent Manufacturing 30, nr 2 (7.10.2016): 575–87. http://dx.doi.org/10.1007/s10845-016-1267-1.

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Geyer, Roland, Luk N. Van Wassenhove i Atalay Atasu. "The Economics of Remanufacturing Under Limited Component Durability and Finite Product Life Cycles". Management Science 53, nr 1 (styczeń 2007): 88–100. http://dx.doi.org/10.1287/mnsc.1060.0600.

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Diener, Derek L., Duncan Kushnir i Anne-Marie Tillman. "Scrap happens: A case of industrial end-users, maintenance and component remanufacturing outcome". Journal of Cleaner Production 213 (marzec 2019): 863–71. http://dx.doi.org/10.1016/j.jclepro.2018.12.186.

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Kim, Jinju, i Harrison Kim. "Impact of Generational Commonality of Short-Life Cycle Products in Manufacturing and Remanufacturing Processes". Proceedings of the Design Society: International Conference on Engineering Design 1, nr 1 (lipiec 2019): 3331–40. http://dx.doi.org/10.1017/dsi.2019.340.

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AbstractShort-life cycle products are frequently replaced and discarded despite being resource-intensive. The short life span and the low utilization rate of the end-of-life products cause severe environmental problems and waste of resources. In the case of short-life cycle products, a new generation of products is released sooner than other products, therefore there are the opportunities to have various generations of products during the remanufacturing process. The commonality between generations increases the intergenerational component compatibility, which increases the efficiency of the manufacturing and remanufacturing processes, while at the same time weakening the performance difference between generations. This paper proposes a mathematical model to investigate the effect of commonality among generations on the overall production process. Based on various given new generation product designs with different commonality, we aim to propose optimal production planning and pricing strategies to maximize the total profitability and investigate how the results vary according to the commonality strategies between product generations.

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Wakiru, James, Liliane Pintelon, Peter N. Muchiri i Peter K. Chemweno. "Integrated remanufacturing, maintenance and spares policies towards life extension of a multi-component system". Reliability Engineering & System Safety 215 (listopad 2021): 107872. http://dx.doi.org/10.1016/j.ress.2021.107872.

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Yazid, A. Mohd, J. Khairur Rijal, M. S. Awaluddin i Emelia Sari. "Pattern Recognition on Remanufacturing Automotive Component as Support Decision Making Using Mahalanobis-taguchi System". Procedia CIRP 26 (2015): 258–63. http://dx.doi.org/10.1016/j.procir.2014.07.025.

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Kanishka, Kumar, i Bappa Acherjee. "A systematic review of additive manufacturing-based remanufacturing techniques for component repair and restoration". Journal of Manufacturing Processes 89 (marzec 2023): 220–83. http://dx.doi.org/10.1016/j.jmapro.2023.01.034.

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Ziqiang, Zhou, Dai Guohong, Zhang Xiangyan, Hu Chaobin i Zhang Yongjian. "Research of Partial Destructive based Selective Disassembly Sequence Planning". Open Mechanical Engineering Journal 9, nr 1 (16.09.2015): 605–12. http://dx.doi.org/10.2174/1874155x01509010605.

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In the process of recycling EOL (end of life) products, disassembly is an important stage. Moreover, there are several targets for disassembly: reuse, remanufacturing and material recycling. In order to improve the efficiency of disassembly, only the component which need to be reused or remanufactured need to be disassembled with nondestructive method. The rest components which recycled for material can be disassembled with partial destructive method. Namely, partial destructive disassembly is more practical than total disassembly within recycling process for EOL products. In this paper, the generally used partial destructive disassembly methods are analyzed. And several rules are defined for reconstructing the hybrid graph of EOL product. And then, an extended Floyd algorithm is proposed for searching optimized disassembly sequence. With this algorithm, the material properties of parts, connection properties between parts or components are taking into account. By ranking the cost of several possible disassembly path, the optimal disassembly sequence is obtained for target component. At last, a soybean milk machine is used as a study case to verify the former approach.

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Diener, Derek L., i Anne-Marie Tillman. "Component end-of-life management: Exploring opportunities and related benefits of remanufacturing and functional recycling". Resources, Conservation and Recycling 102 (wrzesień 2015): 80–93. http://dx.doi.org/10.1016/j.resconrec.2015.06.006.

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Geng, Xiuli, Xiaomin Gong i Xuening Chu. "Component oriented remanufacturing decision-making for complex product using DEA and interval 2-tuple linguistic TOPSIS". International Journal of Computational Intelligence Systems 9, nr 5 (2.09.2016): 984–1000. http://dx.doi.org/10.1080/18756891.2016.1237195.

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Malolan, S., i M. Mathirajan. "Inventory and production planning for component remanufacturing in an original equipment manufacturer-closed loop supply chain". International Journal of Logistics Systems and Management 29, nr 4 (2018): 524. http://dx.doi.org/10.1504/ijlsm.2018.090477.

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Mathirajan, M., i S. Malolan. "Inventory and production planning for component remanufacturing in an original equipment manufacturer-closed loop supply chain". International Journal of Logistics Systems and Management 29, nr 4 (2018): 524. http://dx.doi.org/10.1504/ijlsm.2018.10011440.

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Li, Ming-Liang. "Standardizing Components and Rotating Workers Using GT-Based Algorithm—A Case Study". Sustainability 13, nr 14 (14.07.2021): 7880. http://dx.doi.org/10.3390/su13147880.

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In both manufacturing and remanufacturing systems, exploiting bulk buying and avoiding delivery delays due to material shortages are crucial. One method that aids in these processes is component standardization. Additionally, company managers seek to reduce labor costs and mitigate the risk of sudden worker resignation or absence due to, for example, reasons associated with the COVID-19 pandemic. The aforementioned problems could be solved using the sorting algorithm proposed in this study. The concept of the proposed algorithm is based on group technology. One numerical example and two case studies are presented to demonstrate the utility of the proposed algorithm. The first example suggested that the performance of the algorithm proposed in this study is superior to another one in the literature. The second one demonstrated that the algorithm in this work achieves component standardization by reducing an initial number of 12 components down to 6. The final case study provides an effective means of grouping workers with similar operational abilities and suggests how to assign new tasks to other skilled workers if a worker resigns suddenly or cannot attend work due to pandemic prevention measures.

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Wee, H. M., i C. J. Chung c. "Optimising replenishment policy for an integrated production inventory deteriorating model considering green component-value design and remanufacturing". International Journal of Production Research 47, nr 5 (27.11.2008): 1343–68. http://dx.doi.org/10.1080/00207540701570182.

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Han, Bing-Yuan, Shao-Yi Bei, Xiao-Ming Wang, Ju-Kun Yao, Xin Fan i Wei-Xing Hang. "The Effect on Gasoline Engine Emission Characteristics of Variable Composition Oxygen-Enriched Intake Air Systems and Analysis of Heat-Resistant and Anti-Corrosion Coatings with Remanufacturing". Open Fuels & Energy Science Journal 8, nr 1 (3.11.2015): 329–36. http://dx.doi.org/10.2174/1876973x01508010329.

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In this paper, taking air-cooled, four-stroke, single cylinder gasoline engine as the research object, oxygenenriched intake air systems and gasoline engine performance test bed were built. In the range of 21% to 26% enrichment ratio, based on MAP chart of variable component enriched intake, control parameters were adjusted according to the PWM principle, and a gas mixture of different oxygen and nitrogen components was prepared for the test engine. Under the conditions of different components intake air, an HC, CO and NOx emission characteristics of gasoline were comparatively analyzed through universal characteristic test. The results show that the lowest HC emissions and CO emissions under conditions of variable components of the oxygen-enriched intake air were reduced by 17.59% and 17.14% compared with the normal intake. The lowest NOx emission was 53 × 10-6, which increased by 7.55%. Under conditions of variable component oxygen-enriched intake air, HC and CO emissions of gasoline engine significantly reduced, and NOx emissions deteriorated slightly, which improved the relatively integrated emission performance of gasoline engine. Aiming at the engine corrosion problems raised under high temperature, oxygen-enriched, heat-resistant and anti-corrosion coatings on key parts of the engine corroded easily by advanced manufacturing technology were proposed. Based on the above method, the reliable operation of the engine can be ensured and the technical life and economic life can also be prolonged.

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Zhao, Jianyu, Chuanqing Geng, Huimin Xie i Fei Liu. "A Novel Parameter for Fatigue Damage Assessment of Laser-Repaired Nickel-Based Alloy". Materials 16, nr 1 (21.12.2022): 47. http://dx.doi.org/10.3390/ma16010047.

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The fatigue damage assessment of laser-repaired components is critical to their service safety. However, since laser repairing is an advanced green remanufacturing technology, the current research on its fatigue mechanical behavior and fatigue damage evaluation methods is still immature. In addition, the relevant models used for the fatigue damage evaluation can only indicate the fatigue limit of components, which cannot describe the damage accumulation process of the components during the fatigue testing. Therefore, there is an urgent need to develop a fatigue damage evaluation method that can describe the fatigue damage accumulation and evolution to reveal the damage evolution mechanism during the fatigue test. In this study, based on the 3D-DIC technique, new damage parameters, i.e., strain average value and strain standard deviation, are proposed to quantitatively describe the damage status of the nickel-based components during the stress-based fatigue process. Then, based on the new damage parameters, a strain average value/strain standard deviation damage curve method is proposed to describe the damage status evolution of the components during the fatigue testing and evaluate its fatigue damage. For example, in the tensile fatigue test, the strain average value/strain standard deviation damage curves of the substrate component and the laser-repaired component can be divided into two damage stages. In the first damage stage, the damage increases slowly with the increase in the cycle number, whereas in the second damage stage, the damage increases rapidly with the increase in the cycle number. At this time, there is a demarcation point between the first damage stage and second damage stage in the strain average value damage curve and strain standard deviation damage curve. The cycle number of the demarcation point can be used as a reference value for the fatigue failure of the laser-repaired component. In addition, the electron backscatter diffraction (EBSD) technique was used to verify the validity of the evaluation results from the novel damage parameters.

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Wang, Yang, Yifeng Wang i Peng Fan. "Analysis of Micro Value Flows in the Value Chain of Eco-Innovation in Agricultural Products". Sustainability 14, nr 13 (30.06.2022): 7971. http://dx.doi.org/10.3390/su14137971.

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The purpose of this research is to develop a value chain management model for agricultural eco-innovation that can encompass different aspects to create value. It employs the Graphical Evaluation and Review Technique (GERT), which translates the remanufacturing operational process into a stochastic network. A GERT network covers two main points: its probability component and its parameter component. With the function of the GERT network, it can accomplish a certain state transition, which is presented to the extent of randomness in the process of occurrence. For this system, the number of resources in the GERT network may serve as a reference throughout its entire transition phase in order to show the complete transmission relationship between each node. The main contribution of this research is: Instead of analyzing the value flow mechanism of the eco-innovation value chain of agricultural products, we provide a theoretical basis for the application of multi-objective planning in the value flow of agricultural green innovation, which is conducive to the long-term development of the value chain of agricultural eco-innovation.

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Karim, A. N. Mustfizul, Emrul Kays, Nur Aisyah Akmal Binti Rosland i Saravanan Tanjong Tuan. "Gate-to-Gate Life Cycle Assessment for Determining Carbon Footprint of Catalytic Converter Assembly Process". International Journal of Engineering Materials and Manufacture 2, nr 1 (31.03.2017): 16–24. http://dx.doi.org/10.26776/ijemm.02.01.2017.03.

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With the pursuit of embracing the circular economy, having upward trend in vehicle sales and environmental concern, sustainability has become an imperative part of the global automotive manufacturing strategies. One of the tactics to achieve this sustainable goal is to conserve and enhance the resource base by salvaging the embedded values from end-of-life product and for which, the remanufacturing can be considered as one of the most prominent epitome. Even though many of the auto parts like engine, transmissions, starters, alternators and etc. have been assessed for remanufacturability since last few decades, being a major component of a car body the Catalytic Converter (CC) still remains unfocused in literature. However, to examine the remanufacturability of CC, a comprehensive study for assessing its economic, social, and environmental impact is inevitable. Therefore, with an underlying aim of designing the remanufacturable CC, in this endeavour an attempt has made to evaluate the environmental impact of its welding operations by means of energy consumption through gate-to-gate life cycle assessment. Real life data are collected from a Local Malaysian CC manufacturer. The obtained results show that the welding section has a carbon footprint of 0.203 kgCO2e/unit with major emission coming from the plasma arc welding. In addition to that, it is also observed that the value of carbon footprint is not only sensitive to the emission factor and processing time, but also it is responsive to the nature of the processing operations. Certainly, this observation will motivate to change the product design from the prospect of remanufacturing.

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Wanjara, P., J. Gholipour, E. Watanabe, K. Watanabe, T. Sugino, P. Patnaik, F. Sikan i M. Brochu. "High Frequency Vibration Fatigue Behavior of Ti6Al4V Fabricated by Wire-Fed Electron Beam Additive Manufacturing Technology". Advances in Materials Science and Engineering 2020 (8.06.2020): 1–14. http://dx.doi.org/10.1155/2020/1902567.

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Following foreign object damage (FOD), a decision to repair components using novel additive manufacturing (AM) technologies has good potential to enable cost-effective and efficient solutions for aircraft gas turbine engine maintenance. To implement any new technology in the gas turbine remanufacturing world, the performance of the repair must be developed and understood through careful consideration of the impact of service life-limiting factors on the structural integrity of the component. In modern gas turbine engines, high cycle fatigue (HCF) is one of the greatest causes of component failure. However, conventional uniaxial fatigue data is inadequate in representing the predominant HCF failure mode of gas turbine components that is caused by vibration. In this study, the vibratory fatigue behavior of Ti6Al4V deposited using wire-fed electron beam additive manufacturing (EBAM) was examined with the motivation of developing an advanced repair solution for fatigue critical cold-section parts, such as blades and vanes, in gas turbine engine applications. High cycle fatigue data, generated using a combination of step-testing procedure and vibration (resonance) fatigue testing, was analyzed through Dixon–Mood statistics to calculate the endurance limits and standard deviations of the EBAM and wrought Ti6Al4V materials. Also plots of stress (S) against the number of cycles to failure (N) were obtained for both materials. The average fatigue endurance limit of the EBAM Ti6Al4V was determined to be greater than the wrought counterpart. But the lower limit (95% reliability) of 426 MPa for the EBAM Ti6Al4V was lower than the value of 497 MPa determined for wrought Ti6Al4V and was attributed to the slightly higher data scatter–as reflected by the higher standard deviation–of the former material.

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