检索结果-内蒙古大学图书馆

Approach to a GPT-based Early Detection Tool to Evaluate Heterogeneous Data Sources and Identify Reconfiguration Needs of SMEs in the Production Sector

引用

Procedia CIRP 2024年 130卷 631-636页

作者： Adrian Jacob Anas Ben Achour Uwe Teicher Steffen Ihlenfeldt Fraunhofer Institute for Machine Tools and Forming Technology IWU Pforzheimer Str. 7a 01189 Dresden Germany TU Dresden Institute of Mechatronic Engineering Helmholtzstr. 7a 01062 Dresden Germany

In the face of a rapidly evolving commercial ecosystem, small and medium-sized enterprises (SMEs) must ensure their process chains are capable of swift reconfiguration to mitigate disruptions from supply chain volatility, regulatory changes, and demand shifts. This study addresses the need for reconfiguration in the context of data-driven opportunities for early identification of reconfiguration needs in SMEs, with a focus on the production sector. We identify a variety of diverse and heterogeneous data sources that are critical for tracking these disruptions, such as public news, economic reports, market analyses, legal documents, and internal corporate records. To make use of these data streams, we propose an innovative early detection tool that employs advanced machine learning techniques and private, locally operated Generative Pretrained Transformers (GPTs). This system is intended to process and analyze the various data formats that SMEs encounter including HTML, PDF and plain text as well as quantitative data. By combining public and company internal data while addressing privacy concerns, the tool aims to provide SMEs with a comprehensive tracking of their commercial environments. The tool also addresses the challenges posed by the limited availability of large datasets within SMEs, which are typically required for effective use of machine learning techniques, allowing for effective operation with smaller datasets. As these technologies continue to advance, their impact across various industries, including legal, manufacturing, and supply chain management, is set to expand significantly. The proposed tool offers SMEs enhanced decision-making, compliance assurance, and the ability to proactively adapt to the unpredictable global business landscape.

关键词： Early Detection Decision support Reconfiguration machine Learning GPT

来源：评论

学校读者我要写书评

暂无评论

Silver-integrated EDM processing of TiAl6V4 implant material has antibacterial capacity while optimizing osseointegration

引用

Bioactive Materials 2024年第1期31卷 497-508页

作者： Hilmar Büssemaker Ann-Kathrin Meinshausen Viet Duc Bui Joachim Döring Vadym Voropai Adrian Buchholz Andreas J.Mueller Karsten Harnisch André Martin Thomas Berger Andreas Schubert Jessica Bertrand Department of Orthopaedic Surgery Otto-von-Guericke University MagdeburgGermany Professorship Micromanufacturing Technology Chemnitz University of TechnologyChemnitzGermany Institute of Molecular and Clinical Immunology Otto-von-Guericke University MagdeburgGermany Health Campus Immunology Infectiology and InflammationOtto-von-Guericke University MagdeburgMagdeburgGermany Institute of Materials and Joining Technology Otto-von-Guericke UniversityMagdeburgGermany Fraunhofer Institute for Machine Tools and Forming Technology ChemnitzGermany

Periprosthetic joint infections(PJI)are a common reason for orthopedic revision *** has been shown that the silver surface modification of a titanium alloy(Ti-6Al-4V)by PMEDM(powder mixed electrical discharge machining)exhibits an antibacterial effect on Staphylococcus *** the thickness of the silver-modified surface influences the adhesion and proliferation of bacteria as well as the ossification processes and in-vivo antibacterial capacity has not been investigated ***,the aim of this work is to investigate the antibacterial effect as well as the in vitro ossification process depending on the thickness of PMEDM silver modified *** attachment of *** on the PMEDM modified surfaces was significantly lower than on comparative control samples,independently of the tested surface *** proliferation,however,was not affected by the silver content in the surface *** observed a long-term effect of antibacterial capacity in vitro,as well as in *** induction of ROS,as indicator for oxidative stress,was observed in the bacteria,but not in osteoblast-like *** influence on the in vitro osteoblast function was observed,whereas osteoclast formation was drastically reduced on the silver *** changes in cell death,the metabolic activity and oxidative stress was measured in *** show that already small amounts of silver exhibit a significant antibacterial capacity while not influencing the osteoblast ***,PMEDM using silver nano-powder admixed to the dielectric represents a promising technology to shape and concurrently modify implant surfaces to reduce infections while at the same time optimizing bone ingrowth of endoprosthesis.

关键词： alloy silver powder

来源：评论

学校读者我要写书评

暂无评论

Design and Damping Characterization of Sandwich Composite Made of Particle-Filled Hollow Spheres and Steel Sheets

SSRN

引用

SSRN 2024年

作者： Zhou, Xin Penter, Lars Jehring, Ulrike Göhler, Hartmut Weißgärber, Thomas Ihlenfeldt, Steffen Chair of Machine Tools Development and Adaptive Control Institute of Mechatronic Engineering Technische Universität Dresden Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Germany Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM Branch Lab Dresden Germany

Sandwich composites of particle-filled hollow sphere structures (PHSS) and steel plates offer outstanding lightweight and damping properties, making them ideal for high-speed machine tool components under dynamic loads. Previous research has focused on single particle-filled hollow sphere (PHS) and small-sized PHSS, leaving gap in understanding of the behavior of PHSS/steel sandwich composites. As a result, this material cannot yet be used in the design of machine tools. In this study, a test rig was developed, a design of experiments approach and response surface analysis were used to investigate the effect of design parameters (shell and core thickness), and particle parameters (filling ratio and particle size) on the damping performance of PHSS/steel sandwich. The experimental results indicate that the design parameters have a more significant influence on damping, so they should be given priority in the design of PHSS/steel sandwiches. Secondly, the correlation between design and particle parameters substantially affects the damping performance of the sandwich. Minimizing particle size, increasing filling ratio, thinning the face layer, and thickening the core layer significantly increase structural *** address the manufacturing tolerances of the cellular structure, this study develops a finite element (FE) model-based optimization approach that accurately determines the material parameters of PHSS. These parameters were used in a FE-model of PHSS/steel composite using identified contact parameters by minimizing the difference of measurement and simulation. It shows that the homogenized material model and linear model using global damping parameters accurately replicates the dynamic properties of PHSS/steel sandwich composite in low vibration modes. © 2024, The Authors. All rights reserved.

关键词： Damping

来源：评论

学校读者我要写书评

暂无评论

UV-Imprint of micro-textured polymer films for biomedical disposables 22

UV-Imprint of micro-textured polymer films for biomedical di...

引用

22nd International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2022

作者： Gärtner, Eric Edelmann, Jan Hackl, Claudia Roussak, Liudmila Tomasova, Lea Guttenberg, Zeno Gnüchtel, Sebastian Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany Leipzig Germany SensLab GmbH Leipzig Germany Ibidi GmbH Gräfelfing Germany WESKO GmbH Stollberg Germany

ISBN: (纸本)9781998999118

In the life science sector, increasing demands on the reproducibility and accuracy of lab-on-chip systems require new manufacturing technologies for the production of polymer films with multifunctional surfaces. A mass-production capable and cost-effective way to pattern microfluidic films is the manufacturing process of UV injection molding. Therefore, the aim of the project is to develop microstructured polymer films with multifunctional surface properties by means of an injection molding UV plate-to-plate (P2P) replication process. For this purpose, a special film injection molding system was developed that allows filling with different formulations, curing by UV light and molding of the required microstructures. In respect to the application of the microstructured polyacrylate films in cell-based assays as well as biosensor disposables, microstructures of various geometries were designed and produced in the P2P process. In addition, cell tests were performed in this study in order to evaluate the biocompatibility and optical quality of the substrates, and to verify the functionality of the microstructures. Here, we show that the structured polyacrylate foil is a suitable substrate that can be implemented in plastic microfluidic chips for cell-based assays and biosensor disposables. © European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. All rights reserved.

关键词： Polymer films

来源：评论

学校读者我要写书评

暂无评论

Development of general data-based process models for self-pierce riveting 24

Development of general data-based process models for self-pi...

引用

24th International ESAFORM Conference on Material forming, ESAFORM 2021

作者： Jäckel, Mathias Falk, Tobias Kropp, Thomas Drossel, Welf-Guntram Fraunhofer Institute for Machine Tools and Forming Technology IWU Nöthnitzer Straße 44 Dresden01187 Germany

ISBN: (纸本)9782870193020

The determination of ideal process parameters for mechanical joining processes such as self-pierce riveting currently requires a comprehensive understanding of the process, the availability of the materials to be joined and the corresponding system technology. General process models can simplify the use of these joining technologies, accelerate development cycles and thereby reduce the effort for implementation into production. In this paper, the development of general data-based process models for the mechanical joining method self-pierce riveting with semi-tubular rivet is described. Extensive experimental and numerical investigations with more than 2300 joint combinations for steel and aluminum sheets with tensile strengths between 240 - 1020 MPa were generated for the building of the models. Based on these results, different meta-models are fused into general data-based process models for the self-pierce riveting process in order to show the general relationships between material properties, process parameters and joining results. The paper discusses the acquisition of the experimental and numerical data, the statistical methods for evaluation and the application of the data-based process models. © ESAFORM 2021 - 24th Inter. Conf. on Mat. forming. All rights reserved.

关键词： Riveting

来源：评论

学校读者我要写书评

暂无评论

Enhancing cooling tower performance with condition monitoring and machine learning based drift detection 15

Enhancing cooling tower performance with condition monitorin...

引用

15th CIRP Conference on Intelligent Computation in Manufacturing Engineering, ICME 2021

作者： Nahvi, Sina Polster, Stefan Melzer, Sebastian Stoll, Anke Münnich, Marc Mannstadt, Stefan Klimant, Philipp Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Straße 88 Chemnitz09126 Germany Multi Kühlsysteme GmbH Zschorlauer Straße 56 Aue08280 Germany

Process cooling is crucial to many manufacturing processes. To monitor the performance of a cooling tower, it was equipped with extensive sensors for internal and environmental data acquisition. The aim is to improve reactive and predictive maintenance by estimating the actual condition as well as predicting defective behavior of the cooling tower. We designed a method, which derives the degree of defect from data of the non-defective cooling tower. A concept drift detection approach was implemented, which monitors the model estimation error of a multilayer perceptron model. Increasing model estimation error indicates changing system behavior and increasing risk of failure. © 2022 The Author(s).

关键词： Condition monitoring

来源：评论

学校读者我要写书评

暂无评论

Comparative analysis of topology optimization versus material substitution: Is there a best method for vehicle weight reduction? 34

Comparative analysis of topology optimization versus materia...

引用

34th CIRP Design Conference, CIRP 2024

作者： Chirinda, Gibson P. Matope, Stephen Zincume, Philani Maisiri, Whisper Sterzing, Andreas University of Stellenbosch Private Bag X1 Matieland Stellenbosch7602 South Africa North West University Private Bag X6001 11 Hoffman Street Potchefstroom2531 South Africa Fraunhofer Institute of Machine Tools and Forming Technology IWU Reichenhainer Straße 88 Chemnitz09126 Germany

The United Nations (UN) Sustainable Development Goal 13 focuses on taking urgent action to combat climate change and its impacts. Resource efficient production and strict emission regulations have made vehicle weight reduction a subject of great interest. Common lightweighting techniques include topology optimization and material substitution. The benefits include reduced raw material usage, low fuel consumption, and low carbon emissions. There is a gap in the complex balance of decision-making. If an engineer is faced with the option of topologically optimizing or materially substituting, is one method better than the other? This paper comparatively analyses these lightweight design strategies. © 2024 Elsevier B.V.. All rights reserved.

关键词： Low emission

来源：评论

学校读者我要写书评

暂无评论

Test bench development and validation for blocked force measurements in six degrees of freedom 50

Test bench development and validation for blocked force meas...

引用

50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021

作者： Burkhardt, Martin Hensel, Eric Drossel, Welf-Guntram Fraunhofer Institute for Machine Tools and Forming Technology IWU Nöthnitzer Str. 44 Dresden01187 Germany

ISBN: (纸本)9781732598652

For transfer path analysis (TPA) methods, the description of the source is essential. The possibilities of source characterization are as different as the TPA methods. For the classical methods, the source is considered in the assembled state with feedback from the receiver structure, while for component-based TPA the source is described without feedback from the coupled structure. In addition to TPA, source characterization is also used in the product development process for evaluation or comparisons. Also in these cases, the source must be characterized without feedback from the test structure, which can generally be realized by measuring free velocities or blocked forces. Because of the need for an external load to reach the components operating point, force measurements are often used. However, the realization of a test setup without significant influences on the measurement of forces poses some challenges. The paper presents a setup that can be used to perform a direct force measurement at one point in six degrees of freedom (dof). The necessary boundary conditions to approximate the idealized blocked force assumption are discussed, the calculation of the blocked force in six dof is presented, the structural dynamic response at a reference point is calculated and compared with operational measurements. © INTER-NOISE 2021 .All right reserved.

关键词： Force measurement

来源：评论

学校读者我要写书评

暂无评论

Framework for increasing sustainability of factory systems by generative layout design 29

Framework for increasing sustainability of factory systems b...

引用

29th CIRP Conference on Life Cycle Engineering, LCE 2022

作者： Süße, Marian Ihlenfeldt, Steffen Putz, Matthias Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany Institute of Mechatronic Engineering Technische Universität Dresden Dresden Germany Fraunhofer-Gesellschaft Zur Förderung der Angewandten Forschung E.V. Chemnitz Germany

The structure of factory systems has a long-term impact on the productivity and performance of production systems. With an increasing relevance of decentral renewable energy sources, factory planning becomes more complex due to an increase of decision criteria and possible solutions, but ecological impacts are also growingly depending on early structure decisions. However, decisions during planning processes in industry are still based on experience, qualitative assessments and discussions. Thus, planning results may not exploit the potential of the available solution space, nor do they allow quantitative traceability of layout configurations. Generative Design (GD) gained popularity in topology optimization and building construction and provides promising opportunities for complex design tasks. Not least with the increasing relevance of Building Information Modeling (BIM) in manufacturing, new methods and technologies for optimization become available to factory planners. Hence, the paper describes options for enhanced decisions in sustainable factory layout planning. Therefore, it provides a quick overview on optimization and GD in layout planning as well as the relation towards BIM and sustainability assessment. Based on this, possible extensions of optimization targets and boundaries towards energy and sustainability-related criteria is elaborated. Afterwards, necessary and potential data acquisition with the openBIM-related Industry Foundation Classes (IFC) is discussed. The paper concludes with an outlook towards further investigations on the overlap of layout design, BIM and sustainability. © 2022 Elsevier B.V.. All rights reserved.

关键词： Sustainable development

来源：评论

学校读者我要写书评

暂无评论

Design requirements for a modular framework of industrial surface defect detection system designs in the context of machined, automotive workpieces

Design requirements for a modular framework of industrial su...

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Marco Wagenstetter Thomas Aicher Arvid Hellmich Steffen Ihlenfeldt Powertrain Production System Planning BMW Group Munich Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Dresden Germany

The planning phases of industrial surface defect detection systems for machined, automotive workpieces are time-consuming and require project teams comprised of experts from different disciplines in order to achieve optimal systems regarding the prioritized objectives. To master this challenge current research is aiming for flexible inspection system concepts that are not application-specific and thus can be used for a range of industry-dependent specifications without the necessity to complete each planning phase from the beginning. This paper presents a thorough analysis of the influencing factors at the beginning of the inspection planning process of an industrial surface defect detection system for machined, automotive workpieces. Based on this analysis, design requirements for a modular framework for industrial surface defect detection system designs in this sector are derived and contextualized with available system components. Finally, an outlook for future research is presented with the goal to further increase the flexibility of industrial surface defect detection systems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：