Jens Peter Wulfsberg

• Helmut Schmidt University

Digital Twins (DT) encompass virtual models interconnected with a physical system through data links. Although DTs hold significant potential for positive organisational impact, their successful adoption in industrial practice remains limited. Whereas existing research predominantly focuses on technical challenges, more recent studies underscore th...

In einer qualitativen, explorativen Studie wurden Aspekte erfasst, welche die Bedienbarkeit von Werkzeugmaschinen beeinflussen. Hierzu wurden Interviews und Beobachtungen mit Entwicklern, Ausbildern und Bedienern von Werkzeugmaschinen durchgeführt. Die erarbeiteten Aspekte wurden anschließend systematisch analysiert, kategorisiert und in direkte un...

By creating opportunities for formal employment and absorbing significant portions of the global workforce, micro, small and medium enterprises (MSMEs) can be potent catalysts for sustainable and inclusive economic growth while making supply chains more resilient. However, acquiring the digital fabrication machine tools necessary for manufacturing,...

Recent economic, social, and ecological crises have underscored the need to rethink our production and value creation models, advocating for a more balanced distribution of production capacities to enhance social and economic stability. Local manufacturing, exemplified by the ability to produce essential items like medical products during emergenci...

More and more organizations recognize the need for digitalization. An essential concept in this context is the Digital Twin (DT). At its core, a DT is a virtual representation of physical reality and the associated data exchange. Despite its relevance, practice shows that the application of true DTs is relatively low. Often benefits are intangible...

Due to increasing energy prices and political regulations, the impact of processes with a huge energy consumption, especially in the composite production sector, rises. This means it is necessary to measure and simulate actual production lines for improving the brownfield and learn how to build more efficient systems for greenfield approaches. In t...

The term Digital Twin (DT) is highly prevalent in manufacturing organizations and academic research. A DT is a virtual representation of a physical entity that mirrors its states and properties. According to common definitions , a true DT has the ability to change its physical entity. In practice, however, implementations are often only sub-categor...

The Digital Twin (DT), including its sub-categories Digital Model (DM) and Digital Shadow (DS), is a promising concept in the context of Smart Manufacturing and Industry 4.0. With ongoing maturation of its fundamental technologies like Simulation, Internet of Things (IoT), Cyber-Physical Systems (CPS), Artificial Intelligence (AI) and Big Data, DT...

Additive Fertigungstechnologien bieten einen großen Vorteil für zeitweise autark agierende Systeme wie Schiffe und Boote der Deutschen Marine. Hierbei werden die Verfahren umgangs- sprachlich meist mit dem Begriff 3D-Druck beschrieben. Durch technische Normen werden die Additiven Fertigungsverfahren jedoch kategorisiert und differenziert. Diese Ein...

With the increasing use of the filament fabrication process, the in-house production of filament and the recycling of PLA waste is becoming more and more important. Small desktop filament extruders with associated peripherals enable small businesses and private users to carry out these recycling processes. Determing the right process parameters is...

Das Ersatzteilgeschäft stellt einen wichtigen Wirtschaftszweig vieler Unternehmen dar. Da Ersatzteile jedoch aus Gründen der Wirtschaftlichkeit nicht für einen unbegrenzten Zeitraum vorgehalten werden können, sind Verfügbarkeitsengpässe bei älteren Produkten die Regel. Fehlen zusätzlich Zeichnung oder CAD-Modelle der betreffenden Bauteile, so ist e...

Kurzfassung Dezentrale, vernetzte und offene Mikrofabriken im urbanen Raum, die mit moderner digitaler Fertigungstechnologie ausgestattet sind und sowohl Akteure und Bedarfe der industriellen Wertschöpfung als auch der Maker-Bewegung adressieren (hybride Produktion), haben das Potenzial, gesellschaftliche Mehrwerte zu erzeugen (Partizipation an Wer...

The use of elementary production technologies allows to shift the knowledge and the effort of the design of manufacturing processes from the producers and towards the system manufacturers. Therefore, it enables urban producers that do not have complex process knowledge to implement robust and versatile process chains. This facilitates the utilizati...

Kurzfassung Besonders im Bereich der Luft- und Raumfahrttechnik ist in den letzten Jahren ein starker Anstieg der Relevanz der additiven Fertigung (Additive Manufacturing – AM) in verschiedenen Material- und Prozessvarianten verspürbar. Dabei liegt der Fokus vor allem auf den Möglichkeiten zur Erzeugung metallischer, additiv gefertigter Komponenten...

Increasing maturation and dissemination of easy-to-use and affordable means of digital production (e.g. 3D printing), access to these in makerspaces and FabLabs as well as powerful tools and online platforms for virtual and collaborative product design enabled the highly efficient and innovative mode of open source to spill over from software to ha...

Mechanical stresses on the spine are a significant risk factor for low back pain, a highly prevalent health problem around the world. Certain occupational activities such as repetitive heavy lifting and static bending posture lead to high loads on the lower back. To address this problem, we are developing a soft power suit capable of reducing physi...

In: Proceedings of the 16th Conference on Rapid Design, Prototyping & Manufacturing (RDPM2019)

The shoulder is burdened in many industrial contexts and is particularly very susceptible to injuries, which often result in a lack of productivity, unemployability, an overall depression, or a general presentism of the workforce. The use of support systems can prevent such injuries in general. The benefit of especially soft systems is a high wear...

In: Proceedings of the AST 2019, International Workshop on Aircraft System Technologies, SHAKER VERLAG, ISBN: 978-3-8440-6470-4.

In many industries, we observe a paradigm shift from traditional firm-centric and top-down value creation towards more open and collaborative bottom-up approaches. Firms’ boundaries dissolve, and external actors can enter the domain of industrial value creation by means of advanced information and communication technologies. Beyond that, we also fi...

Method for construction and design of physical human-machine-interface for exoskeletons Based on their force transmitting function physical human-machine interfaces (MTS) are of particular importance for the effectiveness of exoskeletons. So far, MTS have mostly been realized as circular girding mechanisms and are often prone to graying and soft t...

Autor note: Dieser Artikel basiert auf der Bachelorarbeit des Erstautors [Sch18]. Eine Erst-veröffentlichung der Daten erfolgte in wt Werkstattstechnik online Jahrgang 108 (2018) [Wei18]. Sie sind in zusammengefasster Form im Abstractband des 51. DGP's Kongresses 2018 erschienen. Kurzzusammenfassung Die experimentale Durchführung legte den Fokus au...

Innovation is one of the principal keys for a country to achieve sustainability, thereby remaining competitive in the global innovation sector. The surge in technological innovations and entrepreneurships in emerging economies can be partly attributed to the propagation of innovation incubators. Innovation incubators are interfacial firms, private...

Deep hole drilling is very demanding in terms of process control and precision of the used machine tools. In particular for drilling of polymethyl methacrylate (PMMA) with small drill diameters below 1 mm specific aspects have to be considered compared to regular drilling. Instances are the low glass temperature and the poor heat transmission from...

Appropriate assistive systems are used due to the demographic change, increased temporal and spatial interaction or integration of human and robots as well as necessary flexibility in respect to tasks and location. Especially safety and flexibility for effective human-robot-interaction and a broad spectrum of tasks are important. Existing technolog...

Co-creation with users in online communities proved to be a powerful means for product innovation. Crowdsourcing ideas in a contest setting within a community represents an effective method to gather a variety of ideas within a short time and with reasonable financial investment. Users benefit as well. They can be part of industrial value creation,...

Easy-to-use and affordable means of production (e.g. 3D printer), access to these technologies (e.g. in makerspaces) and powerful tools for online product design led to the emergence of open source hardware (OSH). Like in open source software, projects and online platforms have been evolving around physical products from various technologies where...

Durch die webbasierte Einbindung von und Zusammenarbeit mit unternehmensexternen Individuen während der Ideengenerierung und Produktentwicklung ergeben sich für Unternehmen neue Möglichkeiten, um ihre Wettbewerbsfähigkeit zu steigern. Insbesondere Ideenwettbewerbe sind unternehmensseitig ein vielversprechendes Instrument, um in kürzester Zeit und z...

Offene Werkstätten (FabLabs) ermöglichen als Teil einer soziotechnischen Bewegung, die mehr Beteiligung der Bürger an Technologie- und Produktentwicklung anstrebt, einen einfachen Zugang zu technologischem Wissen und Produktionsmitteln und bergen somit das Potential, Innovationen, Gründungsinitiativen und regionale Entwicklung zu stimulieren. Die v...

In diesem Werk wird die Wertschöpfung der Zukunft auf Grundlage neuster Forschungsergebnisse im Rahmen eines interdisziplinären Ansatzes von Wissenschaftlerinnen und Wissenschaftlern aus den Technik-, Wirtschafts-, Sozial- und Rechtswissenschaften diskutiert. Technologische Treiber und rechtliche Aspekte werden dabei ebenso beleuchtet wie die ökono...

Wearable robotic hand devices can support people doing hand-intensive tasks by reducing the physical stress and strain on the human hand. For the safety and comfort of the user, such a device should be compatible and inconspicuous. Based on these two requirements, this paper presents a biomimetic design of a wearable robotic hand device called soft...

Considering the ongoing trend of digitalization of the manufacturing industry to Industry 4.0, this paper assists in the transformation. The research work is focused on studying the possible impacts of Industry 4.0 on lean management (LM) tools which play a vital role to foster quality and reliability of products and services that are delivered to...

From 2010 to 2016, as part of the priority programme SPP1476 “Small Machine Tools for Small Workpieces” funded by the German Research Foundation (DFG) a new modular machine tools concept was scientifically established. The SPP1476 consisted of 13 projects from 18 leading institutes of Production Technology allocated to 13 German universities and re...

A modularised and small machine tool concept developed within a six year research programme allows for a new changeability in production. For a suitable, quick, easy and precise (re)configuration of those developed modules to a complete machine tool, an interface is required. This interface shall provide mechanical positioning as well as the transf...

In micro manufacturing the advantages of compliant mechanism—e.g. the high precision and the absence of friction—are particularly useful. However, the design process of appropriate compliant mechanisms is a complex task with a wide number of research areas to consider. This article addresses the challenging process of designing compliant mechanisms...

This contributed volume presents the research results of the program “Small machine tools for small work pieces” (SPP 1476), funded by the German Research Society (DFG). The book contains the final report of the priority program, presenting novel approached for size-adapted, reconfigurable micro machine tools. The target audience primarily comprise...

Nowadays, innovative lightweight structures and highly complex aircraft components are made of modern lightweight materials such as carbon fibre reinforced plastics (CFRP). In this context current production technologies for fibre composite parts in aviation industry are generally characterised by long cycle times, sub-optimal material usage and a...

Web-based collaboration (co-creation) between companies and users proved to be a powerful concept of value creation for innovation related aspects like idea generation, product development and problem solving. One form of co-creation is represented by so-called innovation/idea/design contests where an organization initiates a web-based competition...

Kurzzusammenfassung. Offene Werkstätten (FabLabs) als Teil einer sozio-technischen, gesellschaftlichen Bewegung, die mehr Beteiligung der Bürger an Technologie-und Produktentwicklung anstrebt, ermöglichen einen einfachen Zugang zu technologischem Wissen und Produktionsmitteln und bergen somit das Potential zur Stimulierung technischer Innovationen,...

Systematic development of units with power tools and wearable support systems " Even though their interaction is significant, wearable support systems as well as power tools are developed individually and independently from one another. Wearable support systems and power tools are currently combined by the user and are therefore not ideally suited...

“Analysis of the engineering chain with a view to developing wearable technical systems“ For the development of technical systems like tools, automated systems and automobiles, a wide range of methods are available. Depending on different applications, these methods are used in different phases of the development process. For the development of sys...

This publication contains reprint articles for which IEEE does not hold copyright. Full text is not available on IEEE Xplore for these articles.

Kurzfassung Mit Blick auf Industrie 4.0 ändert sich in produzierenden Unternehmen das Tätigkeitsspektrum der Belegschaft und erfordert somit neue Kompetenzprofile der Mitarbeiter. Diesem Wandel muss mit adäquater Mitarbeiterqualifizierung begegnet werden. Im vorliegenden Beitrag wird der Qualifizierungsbedarf ausgehend von den neuartigen Geschäftsm...

The current use of fuel efficient and environmentally friendly aircraft is only possible by the development of innovative lightweight constructions and the use of lightweight materials, such as carbon fiber reinforced plastics. With the rising demand on fiber reinforced components in the aerospace industry new production processes have been built u...

Trotz der Bestrebung nach der Automatisierung von Produktionsprozessen in zahlreichen Bereichen werden manuelle Tätigkeiten auch in Zukunft einen bedeutenden Stellenwert der Wertschöpfung einnehmen. Ein Ansatz zur Lösung der damit verbundenen Herausforderungen sind Unterstützungssysteme nach dem Konzept des „Human Hybrid Robot – HHR“. Dieser Beitra...

Kurzfassung Momentan gibt es verschiedene Forschungsvorhaben zur Weiterentwicklung von Sheet Moulding Compounds (SMC) und hybriden Varianten für die zivile Luftfahrt. Dabei geht es hauptsächlich um die Nutzung dieser duromeren Composite-Materialien für die kosteneffiziente, ressourcenschonende und schnelle Produktion von geometrisch komplexen, hoch...

The rising demand for civil aircraft leads to the development of flexible and adaptive production systems in aviation industry. Due to economic efficiency, operational accuracy and high performance these manufacturing and assembly systems must be technologically robust and standardized. The current aircraft assembly and its jigs are characterized b...

Purpose: Lean Manufacturing is widely regarded as a potential methodology to improve productivity and decrease costs in manufacturing organisations. The success of lean manufacturing demands consistent and conscious efforts from the organisation, and has to overcome several hindrances. Industry 4.0 makes a factory smart by applying advanced informa...

ISBN: 978-3-03835-642-4

Today we face the largest migration of human beings in the modern era. This situation is full of chances and threats, but definitely: the scale of the challenge is epic! Social integration is obviously the goal of all global endeavors but it has many very different levels. Besides the language it is a regular job that can be the most suitable instr...

The predicted results of production simulations often differ considerably from those of the practice. Among other things, reasons for that can be found in the inadequate consideration of the socio-technical system of the real manufacturing. The paper addresses this problem and shows how even complex manufacturing principles such as semi-autonomous...

Today's sandwich structures and materials offer a high potential for lightweight design and are being used in various industrial applications. However, the material and manufacturing costs for structural sandwich structures in aerospace and automotive industry are comparatively high. Furthermore the production of lightweight and functional composit...

Despite the increasing degree of automation many tasks are still performed manually, especially in production of individualized, sensitive or quality critical products. These tasks, e.g. tasks in or above head level, are often non ergonomic. Thus musculoskeletal diseases can occur. This paper presents a novel concept for a modular and wearable tech...

This paper demonstrates with examples of a linear and a lifting stage the complex design process of planar compliant mechanisms with flexure hinges. For the realisation of a correction mechanism in a machine tool to perform micro deep hole drills in a round stock a linear and a lifting stage each with a travel range of 0-400 μm has to be developed....

The machining of micro deep holes is very demanding in terms of accuracy and precision of tools and machine components. One major challenge of micro deep hole drilling is to ensure a coaxial boring path. In this paper the problems to perform an axial micro deep hole drill in a transparent polymethylmethacrylate (PMMA) fiber with diameters less than...

Trotz der zunehmenden Automatisierung werden vor allem individuelle, sensible oder qualitätskritische Produkte nach wie vor manuell gefertigt und montiert. Diese Aufgaben, z.B. Tätigkeiten in und über Kopfhöhe sind häufig ergonomisch belastend und können längerfristig zu Erkrankungen des Bewegungsapparates führen. Dieser Beitrag stellt neuartige Ko...

Despite the increasing degree of automation many tasks are still performed manually, especially in production of individualized, sensitive or quality critical products. These tasks, e.g. tasks in or above head level, are often non ergonomic. Thus musculoskeletal diseases can occur. This paper presents a novel concept for a modular and wearable tech...

The value creation concept aims to create not just a paradigm shift in developmental strategies, but also a shift in the distribution of livelihood, thereby providing adequate means of wealth and job creation to the populace in the developed, and developing countries. In response to the need for adequate value creation, some initiatives were rolled...

Many different production systems for supporting, assisting or helping people at work are already available and even more will be developed in future. Such systems come in various forms and characteristics. This paper will introduce some first steps toward a theory of support-systems. It will focus on individual forms of employee support. The theor...

This paper presents a novel concept for wearable support systems based on the approach of the Human Hybrid Robot (HHR), which can be adapted easily to the user and the activity. The concept focuses on modularity and makes intensive use of new manufacturing technologies like 3D-printing as well as flexible kinematics and textile components, in order...

In the quest for sustainability, emerging economies can no longer rely on the vertical transference of foreign technologies. Therefore, the development of endogenous technologies as a driver of any sustainable national industrialisation efforts should be reoriented. Technological independence is profound in ensuring sustainability, which according...

14.0 Service Infrastrukturen Cyber-physische Systeme (CPS) besitzen hohe nicht-funktionale Anforderungen (NFA) in Bezug auf einen sicheren, fehlertoleranten, resilienten, effizienten, selbst-organisierenden und störungsfreien Betrieb. NFA sind daher notwendigerweise in der detaillierten Ausgestaltung und Spezifikation einer Service-Infrastruktur fü...

The participation of spatially distributed individuals in the whole production cycle is feasible through the transnational possibilities of information, communication, and production technologies. To a much greater extent than ever before value creation is generated through the use of knowledge. Open Production is a concept which enables companies...

Today, innovative lightweight constructions and highly complex parts for aircraft can be realized by Additive Layer Manufacturing (ALM), also called 3D-printing, in a time-saving and cost-efficient way. However, these new production technologies are not only considered for lightweight components but also for the manufacturing of molds, tools and ji...

Der Unterstützungsbedarf für Menschen steigt sowohl im Berufs- als auch im Alltagsleben. Aus diesem Grund sind neue Technologien, Maßnahmen und Strategien erforderlich, die Individuen aus den unterschiedlichsten Anspruchsgruppen sowohl im Alltags- als auch Berufsleben angemessen unterstützen bzw. entlasten, um u.a. ein langfristig selbstbestimmtes...

Kurzfassung Die Produktion bildet ein komplexes soziotechnisches System, in dem Wechselwirkungen zwischen dem sozialen und technologischen System maßgeblichen Einfluss auf die übergeordneten Zielgrößen nehmen. Insbesondere bei modernen Arbeitsformen, wie z. B. teilautonomer Gruppenarbeit, die auf dezentralen Steuerungsprinzipien basieren und in den...

Kurzfassung Die Entwicklung zur Industrie 4.0 hat erhebliche Auswirkungen auf die zukünftigen Tätigkeitsfelder der Produktionsmitarbeiter. Diese Veränderungen ziehen notwendige Anpassungen für die Mitarbeiterführung in der Fertigungsumgebung nach sich. In diesem Beitrag werden die Folgen der IT-Durchdringung der Fertigung auf das Arbeitsumfeld der...

This paper focuses on the complex design process of planar compliant mechanisms with flexure hinges. In the following a systematic methodology of the transition from lever mechanisms generated intuitively by the developer or non-intuitively by topology optimization to applicable compliant mechanism is presented. An extended pseudo-rigid-body model...

Despite the increasing application of automated systems, manual tasks still plays an important role in industrial production. The intelligence and flexibility of human enable quick response and adaptive production for the individual requirements and the changes in market. Moreover, some manufacturing tasks with sensible and high-value components (e...

Der wachsende Bedarf an Flugzeugen veranlasst die Luftfahrtindustrie neue, veränderungsfähige und adaptive Montagesysteme zu entwickeln. Diese müssen für hohe Effizienz und Wirtschaftlichkeit technologisch robust und standardisiert sein. Hierbei erscheint der Einsatz von Industrierobotern, die hoch flexibel und genau komplexe Montageoperationen dur...

Kurzfassung Der wachsende Bedarf an Flugzeugen veranlasst die Luftfahrtindustrie neue, veränderungsfähige und adaptive Montagesysteme zu entwickeln. Diese müssen für hohe Effizienz und Wirtschaftlichkeit technologisch robust und standardisiert sein. Hierbei erscheint der Einsatz von Industrierobotern, die hoch flexibel und genau komplexe Montageope...