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Publications (10 of 41) Show all publications
Riillo, C. A., Allamano-Kessler, R., Asnafi, N., Fomin, V. V. & van de Kaa, G. (2024). Technological Uncertainty and Standardization Strategies: A Coopetition Framework. IEEE transactions on engineering management, 71, 993-1006
Open this publication in new window or tab >>Technological Uncertainty and Standardization Strategies: A Coopetition Framework
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2024 (English)In: IEEE transactions on engineering management, ISSN 0018-9391, E-ISSN 1558-0040, Vol. 71, p. 993-1006Article in journal (Refereed) Published
Abstract [en]

Standards may be arrived at through various coordination mechanisms, including cooperation, coopetition, or competition. This article explores how technological uncertainty affects the coordination mechanism for standardization. The article is based on the Community Innovation Survey, a sizeable firm-level survey representative of the Luxembourgish economy. The econometric analysis finds evidence that firms facing technological uncertainty will choose for standardization through competition and coopetition.

Place, publisher, year, edition, pages
IEEE, 2024
Keywords
Competition, coopetition, standardization, technological uncertainty
National Category
Mechanical Engineering Materials Engineering
Identifiers
urn:nbn:se:oru:diva-97468 (URN)10.1109/tem.2022.3145240 (DOI)000754276300001 ()2-s2.0-85124728312 (Scopus ID)
Available from: 2022-02-12 Created: 2022-02-12 Last updated: 2024-02-05Bibliographically approved
Asnafi, N., Leitner, H. & Hackl, G. (2022). Editorial. Paper presented at The 12th International Tooling Conference & Exhibition, Tooling 2022, Örebro, Sweden, 25–27 April, 2022. Berg- und Huttenmännische Monatshefte (BHM), 167(9), 407-407
Open this publication in new window or tab >>Editorial
2022 (English)In: Berg- und Huttenmännische Monatshefte (BHM), ISSN 0005-8912, E-ISSN 1613-7531, Vol. 167, no 9, p. 407-407Article in journal, Editorial material (Refereed) Published
Place, publisher, year, edition, pages
Springer, 2022
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:oru:diva-101206 (URN)10.1007/s00501-022-01271-x (DOI)36092544 (PubMedID)
Conference
The 12th International Tooling Conference & Exhibition, Tooling 2022, Örebro, Sweden, 25–27 April, 2022
Available from: 2022-09-13 Created: 2022-09-13 Last updated: 2022-11-30Bibliographically approved
Asnafi, N. (2021). Application of Laser-based Powder Bed Fusion - Current Possibilities and Constraints for Tooling. In: : . Paper presented at 5th International Conference on Material Engineering and Advanced Manufacturing Technology (MEAMT 2021), Singapore (Online Conference), October 15-17, 2021.
Open this publication in new window or tab >>Application of Laser-based Powder Bed Fusion - Current Possibilities and Constraints for Tooling
2021 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The current possibilities and constraints for tooling made by the application of Laser-based Powder Bed Fusion (L-PBF) is at the focus of this presentation. Design and manufacturing of production tools & dies for cold and hot working and injection molding are addressed. Solid and topology optimized tools are tested, compared with the conventionally designed and manufactured version of the same tools, and certified. The current possibilities and constraints are addressed from the material, technological and industrial perspectives. The current manufacturing readiness level and the industrialization status of metal additive manufacturing through L-PBF are evaluated.

Keywords
Additive Manufacturing, Laser-Based Powder Bed Fusion, Tooling
National Category
Mechanical Engineering Materials Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-95156 (URN)
Conference
5th International Conference on Material Engineering and Advanced Manufacturing Technology (MEAMT 2021), Singapore (Online Conference), October 15-17, 2021
Available from: 2021-10-23 Created: 2021-10-23 Last updated: 2021-10-25Bibliographically approved
Asnafi, N. (2021). Application of Laser-Based Powder Bed Fusion for Direct Metal Tooling. Metals, 11(3), Article ID 458.
Open this publication in new window or tab >>Application of Laser-Based Powder Bed Fusion for Direct Metal Tooling
2021 (English)In: Metals, ISSN 2075-4701, Vol. 11, no 3, article id 458Article in journal (Refereed) Published
Abstract [en]

The journey of production tools in cold working, hot working, and injection molding from rapid tooling to additive manufacturing (AM) by laser-based powder bed fusion (L-PBF) is described. The current machines and their configurations, tool steel powder materials and their properties, and the L-PBF process parameters for these materials are specified. Examples of production tools designed for and made by L-PBF are described. Efficient design, i.e., high tooling efficiency and performance in operation, should be the primary target in tool design. Topology and lattice structure optimization provide additional benefits. Using efficient design, L-PBF exhibits the greatest potential for tooling in hot working and injection molding. L-PBF yields high tooling costs, but competitive total costs in hot working and injection molding. Larger object sizes that can be made by L-PBF, a larger number of powder metals that are designed for different tooling applications, lower feedstock and L-PBF processing costs, further L-PBF productivity improvement, improved surface roughness through L-PBF, and secured quality are some of the targets for the research and development in the future. A system view, e.g., plants with a high degree of automation and eventually with cyber-physically controlled smart L-PBF inclusive manufacturing systems, is also of great significance.

Place, publisher, year, edition, pages
Basel, Switzerland: MDPI, 2021
Keywords
Rapid Tooling, Additive Manufacturing (AM), Laser-based Powder Bed Fusion (L-PBF), Production Tools, Cold Working, Hot Working, Injection Molding
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-90487 (URN)10.3390/met11030458 (DOI)000633875300001 ()2-s2.0-85102119012 (Scopus ID)
Note

Belongs to the Metals Special Issue Metal Additive Manufacturing – State of the Art 2020

Available from: 2021-03-16 Created: 2021-03-16 Last updated: 2022-09-01Bibliographically approved
Suh, S.-H., Asnafi, N. & Stroud, I. (2021). Cyber-Physically controlled Smart Additive Manufacturing system (CPSAM): Plenary speech. In: Metal Additive Manufacturing Conference 2021: Industrial Perspectives in Additive Technologies. Paper presented at Metal Additive Manufacturing Conference 2021 (MAMC2021), Vienna, Austria, November 3-5, 2021.
Open this publication in new window or tab >>Cyber-Physically controlled Smart Additive Manufacturing system (CPSAM): Plenary speech
2021 (English)In: Metal Additive Manufacturing Conference 2021: Industrial Perspectives in Additive Technologies, 2021Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

This plenary presentation is focused on the coming manufacturing systems for metal additive manufacturing controlled cyber-physically. Cyber-Physically controlled Smart Additive Manufacturing system (CPSAM) is a smart additive manufacturing system for realizing Industry 4.0/Smart Manufacturing on the shop floor via a cyber-physical control scheme. CPSAM is capable of 1) autonomous abnormality resolution via MAPE/BD (Monitoring, Analysis, Planning, and Execution based on Big Data analytics and Digital twin), 2) coordination with the shop floor system and 3) seamless interface with the life cycle aspects, hierarchy levels, and humans. In other words, CPSAM is capable of intelligent and autonomous functions such as:

• dealing with abnormalities during machine operation,

• coordination with shop floor devices such as robots and material handling systems,

• augmented interaction for human-robot collaborative tasks,

• collaboration with the shop floor control system for performance optimization (Key Performance Indicators, KPIs),

• interface with the life cycle aspects, CAx (Computer-Aided Design (CAD), Engineering (CAE), Manufacturing (CAM), and Quality assurance (CAQ), and Manufacturing Resource Planning (MPR II), Product Lifecycle Management (PLM), etc.),

• interface with hierarchy levels, such as Manufacturing Execution System (MES), Enterprise Resource Planning (ERP), Customer Relationship Management (CRM), and Supply Chain Management (SCM).

This plenary presentation will describe the above-mentioned and the possible and ongoing standardization which will set the industrial baseline shortly.

Keywords
Cyber-physical systems, Additive Manufacturing, Artificial intelligence, Sensor systems, Machine learning, Automated reasoning
National Category
Mechanical Engineering Computer Systems
Research subject
Mechanical Engineering; Computer Engineering; Systems Analysis
Identifiers
urn:nbn:se:oru:diva-95381 (URN)
Conference
Metal Additive Manufacturing Conference 2021 (MAMC2021), Vienna, Austria, November 3-5, 2021
Available from: 2021-11-10 Created: 2021-11-10 Last updated: 2021-12-17Bibliographically approved
Asnafi, N. (2021). Direct Rapid Tooling by Laser-based Powder Bed Fusion. In: : . Paper presented at 2021 International Conference on Materials Science and Engineering (CoMSE 2021), Shenzhen, China (Online), March 22-24, 2021.
Open this publication in new window or tab >>Direct Rapid Tooling by Laser-based Powder Bed Fusion
2021 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Additive manufacturing of production tools through laser-based powder bed fusion is at the focus of this presentation. Design and manufacturing of production tools & dies for stamping of sheet metal parts, cores (inserts) for injection moulding of plastic components and other types of production tools are addressed. Solid and topology optimized tools are tested, compared with the conventionally designed and manufactured version of the same tools, and certified. The current possibilities and constraints are addressed from the materials and technological perspectives. The current manufacturing readiness level and the industrialization status of metal additive manufacturing of tooling through laser-based powder bed fusion are evaluated.

National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-90748 (URN)
Conference
2021 International Conference on Materials Science and Engineering (CoMSE 2021), Shenzhen, China (Online), March 22-24, 2021
Available from: 2021-03-25 Created: 2021-03-25 Last updated: 2021-03-26Bibliographically approved
Asnafi, N. (Ed.). (2021). Metal Additive Manufacturing – State of the Art 2020: A special issue of Metals. MDPI
Open this publication in new window or tab >>Metal Additive Manufacturing – State of the Art 2020: A special issue of Metals
2021 (English)Collection (editor) (Refereed)
Abstract [en]

Additive manufacturing (AM), more popularly known as 3D printing, comprises a group of technologies used to produce objects through the addition (rather than removal) of material. AM is used in many industries—aerospace and defense, automotive, consumer products, industrial products, medical devices, and architecture. AM is transforming the industry, and this industrial transformation is expected to become more comprehensive and reach a higher pace during the coming years.

Additive manufacturing of metal components with virtually no geometric limitations has enabled new product design options and opportunities, increased product performance, shorter cycle time in part production, total cost reduction, shortened lead time, improved material efficiency, more sustainable products and processes, full circularity in the economy, and new revenue streams.

This Special Issue of Metals focuses on metal additive manufacturing with respect to the topics mentioned below (please see the Keywords/Topics below). The papers presented in this Special Issue give an account of the 2020 scientific, technological, and industrial state of the art for metal additive manufacturing from different perspectives (see the Keywords/Topics below). Your contribution to this 2020 account is highly valuable and appreciated. 

The submitted contribution should address metal additive manufacturing with respect to one or several of the following topics:

  • Business models and engineering
  • Product/component design (including generative design, topology optimization, lattice and surface optimization, etc.)
  • Industrial applications (aerospace, defense, automotive, consumer, medical, and industrial products, etc.)
  • Material and process design and engineering
  • New materials
  • Powder production and characterization
  • Systems and equipment engineering
  • Post-processing
  • Process control and optimization and quality assurance

Place, publisher, year, edition, pages
MDPI, 2021
Series
Metals, ISSN 2075-4701
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-78542 (URN)10.3390/books978-3-0365-1323-2 (DOI)
Available from: 2019-12-11 Created: 2019-12-11 Last updated: 2022-11-02Bibliographically approved
Asnafi, N. (2021). Metal Additive Manufacturing of Production Tools through Laser-based Powder Bed Fusion - Current Possibilities and Constraints. In: : . Paper presented at The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021), Kunming, China, May 22-24, 2021.
Open this publication in new window or tab >>Metal Additive Manufacturing of Production Tools through Laser-based Powder Bed Fusion - Current Possibilities and Constraints
2021 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Invited keynote speech

Additive manufacturing of production tools through laser-based powder bed fusion is at the focus of this keynote presentation. Design and manufacturing of production tools & dies for stamping of sheet metal parts, cores (inserts) for injection moulding of plastic components, and other types of production tools are addressed. Solid and topology optimized tools are tested, compared with the conventionally designed and manufactured version of the same tools, and certified. The current possibilities and constraints are addressed from the material, technological and business perspectives. The current manufacturing readiness level and the industrialization status of metal additive manufacturing through laser-based powder bed fusion are evaluated.

Keywords
Additive Manufacturing, Tools, Production, Laser-based Powder Bed Fusion
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-91930 (URN)
Conference
The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021), Kunming, China, May 22-24, 2021
Note

This keynote speech was held virtually/online.

The conference was a so-called hybrid conference. Some participants were present in person at the venue in Kunming, China. Others took part virtually.

Available from: 2021-05-25 Created: 2021-05-25 Last updated: 2021-05-25Bibliographically approved
Asnafi, N. (2021). Metal Additive Manufacturing—State of the Art 2020. Metals, 11(6), Article ID 867.
Open this publication in new window or tab >>Metal Additive Manufacturing—State of the Art 2020
2021 (English)In: Metals, ISSN 2075-4701, Vol. 11, no 6, article id 867Article in journal, Editorial material (Refereed) Published
Place, publisher, year, edition, pages
MDPI, 2021
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:oru:diva-92169 (URN)10.3390/met11060867 (DOI)000666313900001 ()2-s2.0-85106439607 (Scopus ID)
Available from: 2021-06-07 Created: 2021-06-07 Last updated: 2021-07-30Bibliographically approved
Asnafi, N. (Ed.). (2021). The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021) 22-24 May 2021, Kunming, China. Paper presented at The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021) 22-24 May 2021, Kunming, China. IOP Publishing
Open this publication in new window or tab >>The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021) 22-24 May 2021, Kunming, China
2021 (English)Conference proceedings (editor) (Refereed)
Place, publisher, year, edition, pages
IOP Publishing, 2021
Series
Journal of Physics: Conference Series, ISSN 1742-6588, E-ISSN 1742-6596 ; Vol. 1983
National Category
Mechanical Engineering Materials Engineering Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Mechanical Engineering; Electrical Engineering
Identifiers
urn:nbn:se:oru:diva-95155 (URN)
Conference
The Fourth International Conference on Mechanical, Electric and Industrial Engineering (MEIE2021) 22-24 May 2021, Kunming, China
Available from: 2021-10-23 Created: 2021-10-23 Last updated: 2021-10-25Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8542-9006

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