Procedia CIRP最新文献_第2页

Integrating blockchain with digital product passports for managing reverse supply chain

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.036

Hanbing Xia , Jiahong Li , Qian (Jan) Li , Jelena Milisavljevic-Syed , Konstantinos Salonitis

引用次数: 0

On a heuristic evaluation system for Industry 5.0 with respect to interventions: the case of training in businesses

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.021

Alexios Papacharalampopoulos , Olga Maria Karagianni , Panagiotis Stavropoulos , Unai Ziarsolo , Peter Totterdill , Rosemary Exton , Steven Dhondt , Peter Oeij , Matteo Fedeli , Massimo Ippolito , Fabrizio Timo , Arturas Gumuliauskas , Dovilė Eitmantytė , Unai Elorza

{"title":"On a heuristic evaluation system for Industry 5.0 with respect to interventions: the case of training in businesses","authors":"Alexios Papacharalampopoulos , Olga Maria Karagianni , Panagiotis Stavropoulos , Unai Ziarsolo , Peter Totterdill , Rosemary Exton , Steven Dhondt , Peter Oeij , Matteo Fedeli , Massimo Ippolito , Fabrizio Timo , Arturas Gumuliauskas , Dovilė Eitmantytė , Unai Elorza","doi":"10.1016/j.procir.2025.01.021","DOIUrl":"10.1016/j.procir.2025.01.021","url":null,"abstract":"<div><div>Manufacturing has been undergoing many changes, with the latest one being the paradigm shift to Industry 5.0. In this long procedure, training is required at any level, from operators to managers. Thus, interventions must be made so that Teaching and Learning Factories are upgraded towards integrating Industry 5.0. To this end, an evaluation system has to be made, assessing the feasibility of the three pillars’ integration. This procedure can concern a qualitative assessment (or a quantitative one) of the feasibility and the other implicated concepts, such as upskilling. At the same time, multilevel metrics are relevant, such as Key Performance Indicators (KPIs) related to company practices, manufacturing itself, jobs and trainees. Herein, a summative differential evaluation scheme, based on heuristic aspects, is explored, under the framework of the aforementioned TLF interventions. Examples of companies’ ex-ante characterization are given. Then, potential extensions are being discussed towards achieving formative evaluation and potentially towards KPIs.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 122-128"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generative assistant for digital twin simulations

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.022

Pedro Antonio Boareto , Eduardo de Freitas Rocha Loures , Eduardo Alves Portela Santos , Fernando Deschamps

引用次数: 0

Continuous carbon fiber reinforced filaments manufactured by a cost-effective and two-step impregnation approach

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.017

Jianling Lu , Rui Hong , Yuxin Zhang , Yunzhi Zhong , Guido Link , Luis Heinrich Wengenmayer , Jidong Li , Nanya Li

{"title":"Continuous carbon fiber reinforced filaments manufactured by a cost-effective and two-step impregnation approach","authors":"Jianling Lu , Rui Hong , Yuxin Zhang , Yunzhi Zhong , Guido Link , Luis Heinrich Wengenmayer , Jidong Li , Nanya Li","doi":"10.1016/j.procir.2025.01.017","DOIUrl":"10.1016/j.procir.2025.01.017","url":null,"abstract":"<div><div>Fused filament fabrication (FFF) based 3D printing of continuous carbon fiber-reinforced thermoplastic composites (C-CFRTP) has emerged as a new manufacturing method and offered new avenues for the design and fabrication of complex composite structures. To ensure printing quality and improve mechanical performance of composites, the prevailing approach is producing pre-impregnated filaments before 3D printing. However, current manufacturing methods of filaments still rely on traditional pultrusion approaches, necessitating high facility investment and resulting in elevated prices. Here, we propose a low-cost C-CFRTP filament manufacturing method utilizing a two-step impregnation process. To ensure high filament quality while maintaining compactness, we introduce a liquid-solid two-step impregnation method aimed at flattening carbon fiber bundles during impregnation to achieve thorough and uniform infiltration. We successfully fabricated carbon fiber reinforced polyamide (PA) prepreg filaments and analysed its impregnation and mechanical properties. This study holds significant implications for enhancing impregnation efficiency and reducing the cost of C-CFRTP.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 98-103"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on internal surface finishing of multi-cross channels

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.011

Jiang Guo , Qikai Li , Liang Wang , Pu Qin , Mingyang Lu , Chao Wang

{"title":"Research on internal surface finishing of multi-cross channels","authors":"Jiang Guo , Qikai Li , Liang Wang , Pu Qin , Mingyang Lu , Chao Wang","doi":"10.1016/j.procir.2025.01.011","DOIUrl":"10.1016/j.procir.2025.01.011","url":null,"abstract":"<div><div>The quality of the internal surface plays a crucial role in the performance of parts with complex structures, which are widely used in aerospace, biomedical, and other fields. However, due to poor accessibility, the uniformity of the internal surface of multi-cross channels are low after finishing with existing methods. To address this issue, this paper proposes a step-by-step abrasive flow machining method according to the characteristics of multi-cross channel structures. By flexibly setting the positions of inlets and outlets and adjusting finishing parameters in each step, the material removal rate in different sections of the multi-cross channels can be regulated. Guided by simulation results, the material removal rate in each section becomes consistent after successive steps, achieving uniform finishing of the entire channel. To verify this method, a separatable stainless-steel part with six crossed channels was finished under an inlet pressure of 10 MPa for 40 minutes by using SiC abrasive with a size of 75 μm. The internal surface roughness of the workpiece was reduced from 1.919 μm to less than 1 μm, with variation in each section controlled to less than 12%.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 62-67"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methodologies for connecting an external signal-processing unit for adaptive control in machining systems

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.010

P. Georgi , M. Richter , T. Reeber , K. Güzel , H.-C. Möhring

引用次数: 0

Optimizing the properties of PHBV/PBAT blend for additive manufacturing

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.004

Shafahat Ali , Ibrahim Deiab , Salman Pervaiz

{"title":"Optimizing the properties of PHBV/PBAT blend for additive manufacturing","authors":"Shafahat Ali , Ibrahim Deiab , Salman Pervaiz","doi":"10.1016/j.procir.2024.09.004","DOIUrl":"10.1016/j.procir.2024.09.004","url":null,"abstract":"<div><div>In recent years, 3D printing has become increasingly popular for producing biodegradable products and for exploring a variety of applications. The development of polyhydroxy-co-3-butyrate-co-3-valerate (PHBV) and Polybutylene adipate-co-terephthalate (PBAT) blend for 3D printing has been the subject of extensive research. This paper examines the impact of printing parameters on the mechanical properties of 3D-printed components. The study successfully optimized the mechanical properties of 3D-printed PHBV/PBAT blend parts, achieving a tensile strength of 22.96 MPa, a modulus of 767 MPa, and an elongation percentage of 180 %. These results were obtained by identifying the optimal printing parameters through a Taguchi L9 design and Desirability Function Analysis (DFA), specifically a 0.35 mm layer height, 210 degrees C nozzle temperature, and 100 % infill density. The addition of PBAT significantly enhanced the ductility of PHBV, marking a substantial improvement in elongation. This research provides a robust framework for optimizing the performance of biodegradable blends in additive manufacturing, with promising implications for future applications in sustainable material development.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 7-12"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study of electrical discharge-assisted turning for UD CFRP under low voltage condition

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.009

Ryuta Kuboshima , Hidetake Tanaka , Emir Yilmaz

{"title":"Experimental study of electrical discharge-assisted turning for UD CFRP under low voltage condition","authors":"Ryuta Kuboshima , Hidetake Tanaka , Emir Yilmaz","doi":"10.1016/j.procir.2024.09.009","DOIUrl":"10.1016/j.procir.2024.09.009","url":null,"abstract":"<div><div>CFRP (Carbon Fiber Reinforced Plastic) is prone to intensive tool wear due to the influence of carbon fibers contained as reinforcing materials, causing problems such as burrs and deterioration of finished dimensions. With the increased demand for microfabricated products using CFRP in recent years, the need for CFRP machining using lathes has also increased. Within previous investigations, the authors have already proposed Electric Discharge-Assisted Turning (EDAT) as a new processing method that combines atmospheric electrical discharge machining and conventional turning to reduce tool wear and residual fibers and burrs in turning CFRP. It is possible to cut carbon fibers using electrical energy, remove the cut carbon fibers along with the remaining matrix resin, and reduce the abrasive wear of cutting tools caused by carbon fibers. In this study, the authors explored the controllability of carbon fiber cutting depth through electric discharge, focusing on the impact of low voltage settings and widened discharge gaps. Parameters such as electrode material, shape, discharge voltage, frequency, discharge gap, duty ratio, and lathe setup were thoroughly investigated to elucidate their influence on the EDM (Electric Discharge Machining) process. Experiments were conducted using various combinations of feed rates and circumferential speeds. Consequently, the conditions for the discharge depth would be the shallowest, the residual fibers would be the shortest, and tool wear would be the lowest were investigated. Furthermore, the possibility of stable carbon-fiber cutting using an electric discharge at a lower voltage was confirmed. It demonstrated that the EDAT process could suppress the uncut fibers with fine surface quality and reduce the wear on the cutting edge and possibility of practical use of the EDAT under low voltage condition.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 37-43"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing manufacturing agility: an updated state-of-the-art and operational insights

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.002

Asmae Bakry , Nicolas Sauzeat , Khaled Medini

引用次数: 0

A framework for digital assembly instructions as a step towards manufacturing inclusiveness

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.020

Yuchen Fan , Alessandro Simeone , Dario Antonelli , Alessandra Caggiano , Paolo C. Priarone , Luca Settineri

{"title":"A framework for digital assembly instructions as a step towards manufacturing inclusiveness","authors":"Yuchen Fan , Alessandro Simeone , Dario Antonelli , Alessandra Caggiano , Paolo C. Priarone , Luca Settineri","doi":"10.1016/j.procir.2025.01.020","DOIUrl":"10.1016/j.procir.2025.01.020","url":null,"abstract":"<div><div>Industrial manufacturing processes require precise understanding of instructions, which can be challenging for neurodiverse operators with reading difficulties. To bridge this gap, a digital instruction framework using object detection and natural language processing is proposed in this research. The framework uses an intelligent vision system to monitor task execution, coupled with the automatic generation of personalised voice instructions via large language models. This approach aims to improve accessibility and inclusivity in assembly lines. A case study on the assembly of a horizontal bare-shaft centrifugal pump demonstrates the effectiveness of the framework in reducing assembly errors and improving operational efficiency, making it particularly beneficial for neurodiverse individuals and promoting an inclusive work environment.</div><div><span><span><span><svg><path></path></svg><span><span>Download: <span>Download zip file (1MB)</span></span></span></span></span></span><span><span><span><svg><path></path></svg><span><span>Download: <span>Download Acrobat PDF file (449KB)</span></span></span></span></span></span><span><span><span><svg><path></path></svg><span><span>Download: <span>Download Word document (9MB)</span></span></span></span></span></span></div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 116-121"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0