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Developing a SME Digital Twin by Exploiting Artificial Intelligence Techniques and Robotic Operating System Tool 1

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33rd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Alizee, Savary Lucas, Bernardo Paul-Eric, Dossou Kokou, Lissassi Christophe, Sabourin Icam Site Grand Paris Sud F-77127 Lieusaint France Univ Gustave Eiffel SPLOTT AME F-77420 Champs Sur Marne France Univ Paris Est Creteil LISSI F-77567 Lieusaint France

ISBN: (数字)9783031744853

ISBN: (纸本)9783031744846;9783031744853

Advanced robotics corresponds to one of Industry 4.0 concepts as much as artificial intelligence, digital twin or internet of things (IoT). These concepts are already used to improve the company's global performance but required economic investment that are not necessarily possible for SMEs. Indeed, before investing in a tool by the SME, the company needs to be sure about the impact of the product on the company performance. Flexibility is used as a tool to increase the SME production manufacturing performance through the reduction of lead time, cost and quality. The objective is to develop an SME digital twin able to test and validate industry 4.0 concepts before their implementation in the company. Afocus is made on the exploitation of artificial intelligence and robotic operating systems (ROS) tools to manage and evaluate human-robot interactions. A ROS-based platform has been developed as a module of the digital twin, enabling the optimization of movements for mobile robots and cobots to enhance flexibility in tasks within the company's manufacturing system. This paper presents concepts and tools based on artificial intelligence techniques and ROS tools, to develop a digital twin used to increase SME performance.

关键词： Artificial intelligence advanced robotics digital twin performance optimization

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Modelling of Dislocation Evolution in Nickel-Based Single Crystal Superalloy Under Shot Peening 3rd

Modelling of Dislocation Evolution in Nickel-Based Single Cr...

引用

3rd International Conference on Advanced Surface Enhancement (INCASE)

作者： Yang, Xinyu Xu, Yilun Quek, Siu Sin Jhon, Mark Hyunpong ASTAR Inst High Performance Comp IHPC 1 Fusionopolis Way16-16 Connexis Singapore 138632 Singapore

ISBN: (纸本)9789819986422;9789819986439

Shot peening is a surface treatment technique that can improve the fatigue performance of metallic materials by introducing compressive residual stresses and modifying the microstructure via grain refinement, phase transformation, texture and/ or dislocation structure changes. In this study, a multi-scale modelling framework is developed to understand the evolution of dislocation structures during shot peening of a nickel-based single crystal superalloy. Firstly, explicit finite-element (FE) simulations of the shot peening process are carried out using a Johnson-Cook model calibrated on reported mechanical properties of PWA1484 (Walston et al. In Superalloys 2004 (Tenth International Symposium). TMS, pp 15-24 [1], Cetel and Duhl In Superalloys 1988 (Sixth International Symposium). TMS, pp 235-244 [2]). Instead of using a systematically pre-defined distribution of shots, a random distribution of shot is adopted for these simulations. An Avrami-type equation is used to relate the surface coverage to the necessary peening time and corresponding number of shots (Kirk and Abyaneh in Shot Peen 9:28-30 [3], Pham et al. in Surf Eng 33:687-695 [4]). Various shot peening coverage is modeled by identifying the peening time required for 100%, then using a linear relationship between peening time and coverage. In order to study the effect of shot peening intensity, the initial velocities of shot are chosen according to experimentally measured average shot velocities applied at varying levels of intensity. Figure 1 shows the von Mises stress distribution on shot-peened surface with intensity of 0.15 mmA. During the shot peening process, specimens experience large plastic strain and strain gradient, which induced localized dislocation activity and complex dislocation pattern near the surface. A significant gradient in Geometrically Necessary Dislocations (GND) induced by shot peening from the surface to the bulk has been widely reported (Breumier et al. in Mater Sci Eng A 816 [5])

关键词： Dislocation evolution Single crystal Shot peening

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Indoor Test-Rig to Measure the Lateral Characteristics of Bicycle Tyres 16th

Indoor Test-Rig to Measure the Lateral Characteristics of Bi...

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16th International Symposium on Advanced Vehicle Control

作者： Dell'Orto, Gabriele Mastinu, Giampiero Politecn Milan Dept Mech Engn Via La Masa 1 I-20156 Milan Italy Delft Univ Technol Fac Mech Engn ME Mekelweg 2 NL-2628 CD Delft Netherlands

ISBN: (纸本)9783031703942;9783031703928;9783031703911

Tyre characteristics can strongly affect bicycle dynamics, therefore the overall bicycle performances. However, it may be hard to measure lateral characteristics with low uncertainty. Proper test-rigs are needed to obtain reliable tyre parameters, to be used then for modelling. The paper presents VeTyT, acronym of "Velo Tyre Testing", a new test-rig specifically developed for bicycle tyres at the Department of mechanical engineering of Politecnico di Milano. It is the first test-rig for bicycle tyres in compliance with the standard ISO 9001-2015. We also present the results of an experimental campaign conducted on a road racing bicycle tyre. In particular, the impact of rim stiffness is relevant to tyre characteristics, leading to a 13% increase in cornering stiffness under the same test conditions.

关键词： Tyre test-rig modeling lateral characteristics bicycle

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Verification of the Properties of Zinc Hot-Dip Galvanized Steel Samples 8th

Verification of the Properties of Zinc Hot-Dip Galvanized St...

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8th International Scientific-Technical Conference (MANUFACTURING)

作者： Cerny, Daniel Kuchar, Jiri Kania, Henryk Saternus, Mariola Czech Tech Univ Prague Czech Republic Silesian Tech Univ Gliwice Poland

ISBN: (纸本)9783031564659;9783031564635

Zinc hot-dip galvanizing is one of the oldest methods of protection against corrosion. The goal of this study was to evaluate the influence of zinc bath temperature and immersion time on the coating quality. Three values of bath temperatures and two immersion times were selected. The surface roughness was measured with a surface roughness tester. The corrosion resistance of the samples was evaluated by salt spray corrosion test. The coating thickness was measured with a thickness gauge. The microstructure of the coatings was analyzed, and coating thickness values verified by image analysis methods.

关键词： Hot-dip Galvanizing Zinc Coating Thickness

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Modelling Remanufacturing Process of End-of-Life Batteries Using Discrete Event Simulation 7th

Modelling Remanufacturing Process of End-of-Life Batteries U...

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7th International Workshop on Autonomous Remanufacturing (IWAR)

作者： Packianather, Michael S. Zainuddin, Felisa A. Soroka, Anthony Tuthill, Peter Ames, Eva Cardiff Univ Sch Engn Cardiff CF24 3AA Wales Environm & Climate Change Islington Town HallUpper St London N1 2UD England DSV Harwich CO12 4QG England

ISBN: (纸本)9783031526480;9783031526497

This paper focuses on developing a Discrete Event Simulation (DES) model using WITNESS for the process of remanufacturing End of Life (EoL) batteries. This study shows how the DES model could be used to understand the dynamics of the process flow for identifying the bottlenecks and finding feasible solutions based on Fit Remanufacturing principles in order to improve the performance of the whole remanufacturing process. The DES model was run using an iterative process to reduce idle times, increase utlisation times and minimize blockages and waiting times for the processes involved leading to an increase in the throughput of remanufactured battery packs/day from 10 to 30 after four weeks of continuous operation. Further, the blockage times were eliminated and reduced to less than 4% in all but two machines used in the remanufacturing of EoL batteries.

关键词： Remanufacturing Fit remanufacturing Discrete event simulation

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Human-Robot Collaboration, Sustainable Manufacturing Perspective 32nd

Human-Robot Collaboration, Sustainable Manufacturing Perspec...

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32nd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Ojstersek, Robert Buchmeister, Borut Javernik, Aljaz Univ Maribor Fac Mech Engn Smetanova 17 Maribor 2000 Slovenia

ISBN: (纸本)9783031382406;9783031382413

This paper presents the use of Siemens' Tecnomatix simulation modelling tool to evaluate the importance of the sustainable manufacturing perspective for human-robot collaboration. The research focuses on evaluating key parameters (utilization, scrap rate, cost, time, and quantities) of sustainable manufacturing from social, environmental, and economic perspectives. The simulation model was used to obtain time and quantity-based parameters of the collaborative workplace that can be directly applied to the real-world environment. The results show high suitability of simulation modelling methods to evaluate the collaborative workplace from the perspective of sustainable manufacturing. The obtained results provide answers to the original question of how multidisciplinary research can evaluate the impact of collaborative robots on humans and the sustainability of the manufacturing system. Results presents that human-robot collaboration, when studied at an advanced stage, can deal with different labor shortages in developed countries and ensure the global competitiveness of companies through a highly efficient and sustainable manufacturing system.

关键词： Sustainable Manufacturing Human-robot collaboration Workplace Simulation

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Validation of a MELCOR Model of Reactor Cavity Cooling System Through Support of CFD Simulation

Validation of a MELCOR Model of Reactor Cavity Cooling Syste...

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Saudi International Conference on Nuclear Power engineering (SCOPE)

作者： Szudarek, Maciej Skrzypek, Maciej Prusinski, Piotr Skrzypek, Eleonora Warsaw Univ Technol Inst Metrol & Biomed Engn Sw Andrzej Boboli 8 PL-02525 Warsaw Poland Natl Ctr Nucl Res A Soltana 7 PL-05400 Otwock Poland

ISBN: (纸本)9783031643613;9783031643620

This work aimed to validate a MELCOR model of the Reactor Cavity Cooling System (RCCS) by conducting Computational Fluid Dynamics (CFD) simulations. The development of a passive heat removal system design falls under the category of safety systems, which require guaranteed functionality and verification during the licensing process for the construction and operation of nuclear reactors, both under normal operating conditions and during accident scenarios. In the High-Temperature Gas-cooled Reactor (HTGR), the containment structure differs from typical Light Water Reactors (LWRs) and is typically designed to be non-leak-tight confinement. Therefore, the RCCS plays a crucial role as a safety function, aiming at residual heat removal to maintain fuel temperature below a limit (set at 1600 degrees C) during an accident scenario with increased fission product release probability. The purpose of this work was to develop a methodology for modelling such systems and to identify the key flow phenomena and challenges to be faced. CFD model sensitivity analysis was performed, and discrepancies between MELCOR and CFD were explained. The observed output quantitieswere temperatures of system components and heat flux distribution between radiation and convection. Differences in solid bodies temperatures between MELCOR and CFD were in the range of 10 K. Mesh density and turbulence model had negligible influence on temperatures.

关键词： HTGR RCCS research reactor

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Barriers to the Circular Economy in the Plastics Industry: A Systematic Literature Review 32nd

Barriers to the Circular Economy in the Plastics Industry: A...

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32nd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Pinheiro, Mariana F. Ferreira, Luis M. D. F. Azevedo, Susana G. Magalhaes, Vanessa S. M. Univ Coimbra Dept Mech Engn Coimbra Portugal Univ Coimbra Dept Mech Engn CEMMPRE Coimbra Portugal Univ Coimbra Fac Econ CeBER Ave Dias da Silva 165 P-3004512 Coimbra Portugal

ISBN: (纸本)9783031381645;9783031381652

Despite the high economic importance of the plastic industry worldwide and the capacity of plastic to be recycled multiple times due to its ability to preserve its value and properties, the plastic recycling sector still needs to be developed and more cohesive. Thus, there is a need to understand what is hindering plastic recycling. To that end, this paper presents a systematic literature review of the barriers to implementing the circular economy principles in plastic industries, investigating 30 articles retrieved from the SCOPUS database and published between 2008 and 2022. The systematic literature review identified forty-one barriers clustered into seven categories: social, organisational, economic, supply chain, technological and informational, institutional, and market barriers. This study aids practitioners and managers in identifying the main barriers that may be hindering the adoption of circular economy practices within their businesses.

关键词： Circular Economy Plastics Industry Challenges Systematic Literature Review

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Nuclear Power, Photovoltaics, and Compressed Air Energy Storage: A Low-Cost, On-Demand Power Hub for Saudi Arabia

Nuclear Power, Photovoltaics, and Compressed Air Energy Stor...

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Saudi International Conference on Nuclear Power engineering (SCOPE)

作者： AlSadah, Jihad Hassan KFUPM Phys Dept Dhahran 31261 Saudi Arabia

ISBN: (纸本)9783031643613;9783031643620

Saudi Arabia' energy mix is shifting toward low-carbon solar photovoltaics (PV) and nuclear energy. PV intermittency and seasonality must be considered along its low cost which reached globally low value of (sic)1.04/kWh(e,PV) in SA. Nuclear power plants, NPP, are reliable and cost stable: (sic)4.2 - 7.1/kWh(e,NPP). NPP requires freshwater for evaporative cooling 2.7 liter/kWh(e,NPP) stressing water resources. NPP is best operated at constant maximum power avoiding xenon poisoning operational complexity and keeping captial intenstive LCOE low. This paper explores alternative roles for NPPs in Saudi Arabia: baseload electricity generation, dedicated desalination, and functioning as energy hub integrating energy storage systems and PV power. Baseload operation is not competitive compared to combined cycle gas turbine (CCGT) or future PV/battery systems. NPP can operates thermal and membrane desalination with good economics of 293.7 liter/kWhe and energy cost component of $0.14 - 0.24/m(3). Our study focuses on integrating constant NPPs with intermittent PV systems using compressed air energy storage (CAES). Liquid piston used in CAES enables efficient quasi-isothermal compression/expansion. PV powers charging/compression and NPP heat powers discharging/expansion. The system includes ice thermal storage, 300 degrees C phase-changing-material hot storage with 200bar high-pressure tanks storing cold air. The system enables power on demand, PODindependent from PVand NPP time profiles. PV-NPP-CAESPODcosts 42% less than NPP-cost. Electricity generated is 2.5X higher than its NPP contribution. Integrating SA locally advantageous PV to reliable NPPs by utilizing industrially mature CAES and thermal storage, represents a promising energy plan for Saudi Arabia constituting energy hub of low-cost and reliable power on demand.

关键词： Nuclear Energy Photovoltaics CAES PCM Desalination

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Underwater Biomimetic Propulsion Using Coupled Structures 15th

Underwater Biomimetic Propulsion Using Coupled Structures

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15th International Conference on Vibration Problems (ICoVP)

作者： Bhamra, Navinder Singh Vijayan, Kiran Nagarajan, Vishwanath Indian Inst Technol Khamgpur Kharagpur 721302 W Bengal India

ISBN: (纸本)9789819959211;9789819959228

The flapping motion of caudal fin found in fishes like Mackerel, salmon and trout has been extensively studied for its excellent propulsion characteristics. Locomotion is generally achieved through the oscillatory motion of the peduncle and a caudal fin at the end. In the current work, the two body parts are modelled as Euler-Bernoulli beams with appropriate stiffeners at their joint. The fluid domain surrounding the structure is modelled using potential flow theory. The fluid-structure interaction results in an added-mass effect, which significantly impacts the thrust generated. The mean thrust is correlated to the tip velocity of the structure and hence it could be maximised by increasing the bandwidth of peak response. A parametric analysis is carried out to identify the sensitive range of the stiffness parameters. The results indicate that by proper tuning of the coupling between the peduncle and the attached fin, the thrust output can be controlled.

关键词： Coupled structures Fluid-structure interaction Biomimetic propulsion Underwater vibration

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