CIRP Journal of Manufacturing Science and Technology最新文献

{"title":"Condition-aware capacity planning for agile hybrid disassembly systems in remanufacturing","authors":"Marco Wurster ,&nbsp;Timon Feuerstein ,&nbsp;Finn Bail ,&nbsp;Marvin Carl May ,&nbsp;Lihui Wang ,&nbsp;Gisela Lanza","doi":"10.1016/j.cirpj.2025.04.008","DOIUrl":"10.1016/j.cirpj.2025.04.008","url":null,"abstract":"<div><div>Remanufacturing of used products is essential in the circular economy but faces challenges like high variant diversity and varying product states, requiring flexible production resources. Agile hybrid disassembly systems, combining manual and automated resources, offer a solution. These systems need a planning methodology to reconfigure capacity and structure effectively. This work proposes a foresighted condition-aware capacity planning method, using a mixed-integer linear optimization problem to adjust system capacity while minimizing costs. A capability-based framework models the hybrid system, considering product condition deviations. The system, tested on data grounded in a real industrial scenario, shows the benefits of frequent reconfiguration based on condition-aware planning.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 234-247"},"PeriodicalIF":4.6,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a digital twin system for a direct-drive electric screw press","authors":"Linglin Liu,&nbsp;Xiangrui Hu,&nbsp;Zhengyu Quan,&nbsp;Jinguo Huang,&nbsp;Jing Liu","doi":"10.1016/j.cirpj.2025.04.015","DOIUrl":"10.1016/j.cirpj.2025.04.015","url":null,"abstract":"<div><div>Electric screw presses are extensively utilized in industrial manufacturing sectors. However, when operating under extreme conditions, it is prone to performance degradation due to unreliable factors. Additionally, due to limitations in sensor placement and diversity, there are blind spots in monitoring the internal state of the equipment, making it difficult to detect potential faults in a timely manner. To address these challenges, this paper proposes a direct-drive electric screw press (DESP) system integrated with Digital Twin (DT). By accurately simulating the dynamic behavior and performance of physical equipment, DT enables intelligent operation and maintenance functions, including real-time monitoring and fault prediction. This paper presents a comprehensive DT system framework comprising physical, digital, and service layers, with detailed descriptions of implementation methodologies for each module within the digital layer. To validate the proposed approach, a J58ZK-4000 electric screw press was selected as a case study. Using MATLAB Simulink, we built a DT behavior model of DESP and demonstrated its robust capabilities in adaptive updating and data generation. Finally, we briefly outlined sensor data items and showcased the detection of equipment state changes based on AutoEncoder, thereby establishing a foundation for comprehensive state awareness and decision support for DESP.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 222-233"},"PeriodicalIF":4.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of numerical model to investigate the process mechanics of eccentric square pin during friction stir welding","authors":"Atul Kumar Choudhary,&nbsp;Rahul Jain","doi":"10.1016/j.cirpj.2025.05.001","DOIUrl":"10.1016/j.cirpj.2025.05.001","url":null,"abstract":"<div><div>The tool pin feature is a key factor for driving the weld quality and material flow characteristics during friction stir welding (FSW). A thermomechanical coupled Eulerian-Lagrangian (CEL) model is developed to simulate the influence of tool pin eccentricity (0.0, 0.1, and 0.2 mm) on the variation of mechanical properties, material flow, temperature, and forces. The Eulerian volume fraction (EVF) technique has been used for defect identification, and the model is validated with experimentally observed defects, peak temperature, and forces. Results show enhanced mechanical and thermal characteristics with increased pin eccentricity and tool tilt angle. The eccentric pin resulted in an enhanced effective pin geometry, resulting in higher swept volume, i.e., leading to improved strength and plastic deformation with a higher rotational path of the material. Widening of the stir zone is observed with an increase in pin eccentricity from 0.0 to 0.2 mm. The highest weld efficiency of 86 % is obtained for <span><math><msup><mrow><mn>2</mn></mrow><mrow><mi>o</mi></mrow></msup></math></span> tilt and 0.2 mm pin eccentricity with a stirred zone peak temperature of 439 °C and 9.4 effective strain. The material flow is studied using tracer material to understand the extent of material flow behavior with pin eccentricity. Variation in temperature, heat flux, strain, and material velocity is studied for different angular motions of the tool pin.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 206-221"},"PeriodicalIF":4.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing surface quality, mechanical properties, and biocompatibility of laser powder-bed fusion-fabricated SS316L part through laser polishing","authors":"Manchu Mohan Krishna Sai,&nbsp;Amitava Mandal","doi":"10.1016/j.cirpj.2025.05.003","DOIUrl":"10.1016/j.cirpj.2025.05.003","url":null,"abstract":"<div><div>Laser powder bed fusion (LPBF) is a well-known process for fabricating metallic bio-implants. However, the printed implants exhibit higher surface roughness along the build direction due to powder adhesion, lack of fusion of powder particles, and staircase effect caused by layer-on-layer deposition. This study investigated the influence of laser polishing (LP) on surface characteristics, mechanical properties, and biocompatibility of LPBF-fabricated SS316L parts. LP significantly reduced surface roughness (84 %) compared to the as-built state. The pyrometer captures the temperature in the rapid heating, melting, and solidification stages during laser polishing. The rate of heating and cooling is about 10⁷ºC/s in both cases, which resulted in a columnar and lathe-type microstructure with a micro-hardness of 270 HV. Wear resistance after LP is enhanced due to surface hardening, but its effectiveness might be limited to its remelted layer thickness. XRD analysis confirmed no alteration in material phases (Fe₁Ni₁ and γ-Fe). The cytotoxicity analysis of the powdered and as-built samples showed less cell viability and proliferation. Laser-polished surfaces fostered the highest cell viability, highlighting their superior biocompatibility. Overall, this study suggests laser polishing as a promising approach to improve surface quality, mechanical properties, and biocompatibility of LPBF-made SS316L parts, particularly for biomedical applications.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 195-205"},"PeriodicalIF":4.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Material extrusion 3D printing with polymer microsphere inks: Effects of solid volume fraction and extrudate swell on the resolution and suitable processing parameters","authors":"Juuso Pohjola ,&nbsp;Tero Soukka ,&nbsp;Mika Jokinen ,&nbsp;Mikael Stolt","doi":"10.1016/j.cirpj.2025.05.002","DOIUrl":"10.1016/j.cirpj.2025.05.002","url":null,"abstract":"<div><div>Material extrusion 3D printing of semi-solid inks holds tremendous potential in the pharmaceutical industry. However, the success of the manufacturing process relies on adequate material properties and optimized process parameters. Therefore, broader adoption of the technology requires a deep understanding of the phenomena present before, during, and after the extrusion process. This paper illustrates the practical effects of extrudate swell on the 3D printing process and the resulting object quality. Extrudable inks containing polymeric microspheres embedded in a Carbopol gel matrix were studied, and the effects of extrudate swell on print quality were assessed. Neglecting extrudate swell resulted in the extension of the printed filaments, leading to shape distortion in thin-walled objects. However, extrusion rate corrections could be determined from the extrudate swell ratios, which was experimentally validated. While extrudate swell negatively affected printing resolution, a counteracting effect was also demonstrated by utilizing controlled shrinkage after printing.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 182-194"},"PeriodicalIF":4.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selection of a suitable wear-resistant metal matrix composite for remanufacturing continuous miner cutter (CMC) sleeves via a two-step laser-based technique","authors":"Emmanuel Efemena Lindsay ,&nbsp;Idris Babatunde Akintunde ,&nbsp;Eyitayo Olatunde Olakanmi ,&nbsp;Raghupatruni Ventaka Satya Prasad ,&nbsp;Annelize Botes ,&nbsp;Sisa Lesley Pityana ,&nbsp;Samuel Skhosane","doi":"10.1016/j.cirpj.2025.04.014","DOIUrl":"10.1016/j.cirpj.2025.04.014","url":null,"abstract":"<div><div>The premature failure of continuous miner cutter (CMC) sleeves in underground coal mining necessitates remanufacturing to enable a closed-loop system and enhanced sustainable mining operations. However, a techno-economic analysis conducted revealed that exclusively using laser cladding (LC) to remanufacture failed sleeves is not economically viable. Thus, this research aims to explore a two-step laser-based remanufacturing technique that incorporates gas metal arc welding (GMAW) and LC, as well as identify suitable wear-resistant metal matrix composites (MMCs) for restoring damaged sleeves. Consequently, an LC process was used to deposit three MMC materials onto optimised GMAW overlays. A comparative analysis of the manufactured MMC coatings revealed that WC/TiC/AISI4340 coating exhibited a well-consolidated, crack- and pore-free microstructure and a superior microhardness of 931 HV0.5 compared to WC- and TiC-reinforced composites, which had average hardness values of 670 HV0.5 and 744 HV0.5, respectively. Additionally, the WC/TiC/AISI4340 coating demonstrated an excellent low wear rate (0.0007 g/s) comparable to TiC-reinforced coating, and a propensity to extend the sleeve’s lifespan by a factor of four. These enhancements are attributed to the formation of an umbrella-like network of TiC, predominantly distributed in the coating top region and solid solution strengthening [(Ti, W)C] caused by the partial dissolution of WC/TiC carbides and their precipitation into the eutectic carbide network within the interdendritic grain regions. Hence, combining GMAW and LC processes with WC/TiC/AISI4340 presents a promising remanufacturing strategy for restoring mining equipment, offering improved performance, longer lifespan, and economically viable and sustainable mining operations.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 165-181"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Autonomous process optimization of a tabletop CNC milling machine using computer vision and deep learning","authors":"Filippo Danilo Michelacci,&nbsp;Gyuhyeon Han,&nbsp;Sanha Kim","doi":"10.1016/j.cirpj.2025.04.009","DOIUrl":"10.1016/j.cirpj.2025.04.009","url":null,"abstract":"<div><div>CNC milling machines offer precision manufacturing across diverse materials but require off-machine quality checks and trial-and-error parameters selection. This study proposes a system that autonomously adjusts such parameters to improve surface quality and productivity. Composed of a deep learning-based monitoring apparatus capable of on-site surface roughness prediction with a 3.6 % mean error and a dataset of optimized parameters generated via multi-objective Bayesian optimization in only eleven attempts, it successfully conducted a fully autonomous trochoidal slotting operation, improving the final roughness by 36 %. The system, with further refinements, can be industrialized making autonomous machining accessible even to small and medium enterprises.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 153-164"},"PeriodicalIF":4.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing abrasive waterjet trepanned hole geometry using a through-kerf prediction model informed sequential machining","authors":"Rajesh Ranjan Ravi,&nbsp;T.N. Deepu Kumar,&nbsp;D.S. Srinivasu","doi":"10.1016/j.cirpj.2025.04.013","DOIUrl":"10.1016/j.cirpj.2025.04.013","url":null,"abstract":"<div><div>The hole-making process is essential in manufacturing. Conventional trepanning ensures accuracy, it faces challenges like heat effects, tool wear, and residual stress. Conversely, abrasive waterjet (AWJ) trepanning offers versatility in hole sizes and materials; it introduces geometrical deviations. This study leverages the benefits of AWJ trepanning and conventional milling (CM) to improve hole geometric accuracy. Post-AWJ trepanning, CM informed with a predicted hole geometrical deviation for correction using a through-kerf profile model (≤ 3.3 % error) proposed based on the hypothesis (validated, 12 %−15 % error) that gradually evolved kerf geometry dictates the hole geometrical deviations. The combined approach significantly minimizes geometrical errors.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 138-152"},"PeriodicalIF":4.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-stage LP/NLP feedrate optimization for spline toolpaths","authors":"Katharine Nancy DiCola ,&nbsp;Christina Qing-Ge Chen ,&nbsp;Serafettin Engin (3) ,&nbsp;Kaan Erkorkmaz (1)","doi":"10.1016/j.cirpj.2025.04.005","DOIUrl":"10.1016/j.cirpj.2025.04.005","url":null,"abstract":"<div><div>Feedrate optimization is an inherently nonlinear and complex problem, but also critical to enhancing the productivity of multi-axis machining operations. This paper presents a new approach to utilize linear programming (LP) alongside nonlinear programming (NLP) in a dual windowing configuration, for optimizing the feed profile for long spline toolpaths. LP is able to handle kinematic constraints of limiting axis velocity, acceleration, and jerk. NLP, afterwards, solves the minimum time problem subject to less conservative, albeit nonlinear, motor torque and servo error constraints. While NLP adds nearly an order of magnitude computation time, in the simulation case studies conducted, it was seen to improve motion time by typically 30 %. The optimized trajectory was also tested on a 3-axis router.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 122-137"},"PeriodicalIF":4.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tribo-electrical performance of TiB2/Cu laser cladding-remelting layer under high-current sliding contact","authors":"Yuankai Zhou,&nbsp;Yuxin Jiang,&nbsp;Xue Zuo,&nbsp;Da Wen","doi":"10.1016/j.cirpj.2025.04.011","DOIUrl":"10.1016/j.cirpj.2025.04.011","url":null,"abstract":"<div><div>Slip rings are prone to wear under high-current conditions, resulting in wind turbine failures. To enhance durability, TiB₂/Cu coatings were fabricated on the surface of slip rings using laser cladding and remelting technologies. The tribo-electrical performance of coatings under high-current sliding contact was investigated and the effect of laser cladding-remelting on the tribological and electrical properties of coatings was revealed. The results demonstrate that, compared to the cladding layer, the dilution rate, conductivity, and hardness of remelting layer were increased by 11 %, 2 %, 12 % respectively, and the porosity, longitudinal and transverse residual stress were reduced by 70 %, 33 %, 61 % respectively. At a current of 50 A, the service life of remelting layer was extended, and wear loss was significantly reduced while maintaining a high current-carrying efficiency of 95.2 %. Additionally, due to a new hard phase TiC generated in laser process, as well as the increased melting point of coating, the hardness, wear resistance and softening resistance of the TiB₂/Cu layer were improved.</div></div>","PeriodicalId":56011,"journal":{"name":"CIRP Journal of Manufacturing Science and Technology","volume":"60 ","pages":"Pages 111-121"},"PeriodicalIF":4.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}