Daniel Trauth

Daniel Trauth
Fraunhofer Institute for Applied Information Technology FIT | FIT · Department of Cooperation Systems

Dr.-Ing. Dipl.-Wirt.Ing.

About

125
Publications
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621
Citations

Publications

Publications (125)
Preprint
Resilience - the ability to deal with crises and recover from their effects as quickly as possible - has been glorified since the COVID-19 pandemic as the new miracle cure against the effects for disruptions that occur in the future. Especially for Germany as an export-oriented location, the resilient design of supply chains is an economic success...
Conference Paper
Composites' high material costs enforce a focus on quality assurance. Yet, current quality assurance systems are expensive and only indirectly detect errors. Artificial neural networks can directly identify errors in images. However, their inner complexity is incomprehensible to humans, which leads to issues of accountability and acceptance. Hence,...
Chapter
Die digitale Transformation stellt aktuell eine der größten Veränderungen in der produzierenden Industrie dar. Die Digitalisierung von Produkten und Prozessen eröffnet aber nicht nur Chancen und Möglichkeiten sondern auch Herausforderungen. Der Grund dafür ist u. a. ein Mangel an geeigneten Fachkräften und das Fehlen einer geeigneten IT-Infrastrukt...
Chapter
Das Internet of Things entfaltet erst durch die Überwindung von bestehenden Produkt- und Industriegrenzen sein volles ökonomisches Potenzial. Trotzdem werden Cyberphysische Systeme in der Forschung bisher oftmals isoliert betrachtet. Der Begriff des Internet of Production (IoP) steht für die Vision eines übergreifenden Austauschs von Daten und Info...
Article
Full-text available
The process setup of manufacturing processes is generally knowledge-based and carried out once for a material batch. Industry experts observe fluctuations in product quality and tool life, albeit the process setup remains unchanged. These fluctuations are mainly attributed to fluctuations in material parameters. An in-situ detection of changes in m...
Article
Full-text available
The vision of the Paris Climate Convention is global greenhouse gas neutrality by 2050. Manufacturing industry accounts for approximately 25% of global greenhouse gas. The achievement of emission targets requires joint implementation and the participation of the employee. An incentive concept based on a Distributed Ledger Technology allows the auto...
Book
Die Monetarisierung von Daten ist per se ein sehr junges Thema, zu dem es nur sehr vereinzelt Fallbeispiele gibt. Es fehlt an einer Strategie bzw. einem Konzept, das Führungskräften den Weg in die Monetarisierung von Daten zeigt, insbesondere jenen, die die Digitale Transformation bzw. Industrie 4.0 für sich entdeckt haben oder davon bedroht sind....
Article
Industry 4.0 is characterized by the transformation and networking of production systems as a result of utilizing digital technologies and processing huge amounts of data. The features of Distributed Ledger Technologies have the potential to revolutionize production by creating trust and transparency in stored data, eliminating dependence on single...
Article
Full-text available
Tool wear during fine blanking impairs the quality of the sheared part, which is assessed in regular samples in an industrial environment. This leads to scrap production and low planning reliability due to low wear predictability. A tool condition monitoring based on acoustic emission (AE) data for the prediction of the remaining useful life of the...
Chapter
Der zunehmende Einsatz von Künstlicher Intelligenz zur kosten- und nachhaltigkeitsorientierten Optimierung der Fertigungsprozesse führt zu einer Umstrukturierung der Arbeitswelt innerhalb der produzierenden Industrie. Beschäftigte vor Ort verwandeln sich zum Orchestrator einer Vielzahl von autonom agierenden Anlagen auf Basis der Datenanalyse. Die...
Preprint
The use of Distributed Ledger Technologies in the field of production optimizes various use cases. Within the framework of the research project “Blockchain Reallabor in the Rheinisches Revier”, five use cases were defined for production in the first year of the project. The confidence in and transparency of stored data, the elimination of central e...
Article
Cold forming, particularly forward impact extrusion, is used for mass production of steel components. To ensure robust forming processes, the workpieces are usually phosphated and then soaped as well as mineral oil-based lubricants are used. As these lubricants are often harmful to the environment and health, alternative approaches are to be invest...
Conference Paper
Up to 250 fine-blanked components per luxury-class vehicle make a considerable contribution to the automotive production supply chain. High scrap rates in an industrial setting imply an inefficient use of the resources and process design and cause avoidable CO2-emissions. This contribution focusses on a data-driven production cycle optimization of...
Conference Paper
Full-text available
Today’s supply chains are becoming increasingly flexible in nature. While adaptability is vastly increased, these more dynamic associations necessitate more extensive data sharing among different stakeholders while simultaneously overturning previously established levels of trust. Hence, manufacturers’ demand to track goods and to investigate root...
Article
Full-text available
Networking and digitization in manufacturing enable novel methods of data-driven analysis and optimization of processes through cross-process data availability. The creation of digital twins plays an important role in this. However, not all data relevant for a digital twin can be measured directly in the process. Therefore, methods are needed that...
Article
In the production industry, the volume, variety and velocity of data as well as the number of deployed protocols increase exponentially due to the influences of IoT advances. While hundreds of isolated solutions exist to utilize this data, e.g., optimizing processes or monitoring machine conditions, the lack of a unified data handling and exchange...
Chapter
Die Möglichkeiten und Herausforderungen des industriellen Internets der Dinge werden seit Jahren am Werkzeugmaschinenlabor WZL der RWTH Aachen unter dem Thema Internet of Production (IoP) untersucht. Das IoP ist auf interdisziplinäre Optimierungsansätze und die gesamte Wertschöpfungskette, insbesondere in den Bereichen Datenerfassung, Datenmodellie...
Conference Paper
Full-text available
Fine blanking is a highly productive process of industrial mass production of high quality components in particular for the automotive industry. The manufacturing process faces a limit at elevated tensile strengths of the materials to be processed. Consequently, high-strength steels can currently only be fine blanked to a limited extent. This can b...
Article
Full-text available
Sharing data between companies throughout the supply chain is expected to be beneficial for product quality as well as for the economical savings in the manufacturing industry. To utilize the available data in the vision of an Internet of Production (IoP) a precise condition monitoring of manufacturing and production processes that facilitates the...
Article
Industrielle Güter durchlaufen eine Vielzahl von Bearbeitungsschritten, während der Bauteilwert sich entlang dieser Wertschöpfungskette steigert. Eine robuste und Edge-KI-basierte Vorhersage von Prozessergebnissen befähigt Maschinenbediener durch abgeleitete Handlungsempfehlungen aktiv bei ihrer Entscheidungsfindung. Dies ermöglicht nicht nur eine...
Article
Purpose The modification of the tribological system is an essential aspect of the implementation of resource-saving processes in cold forming. As a result, the focus of this contribution is the influence of the tribological system on the full forward impact extrusion of aluminum alloy EN AW 6082 (T6) with regard to reduction of friction and wear....
Article
Full-text available
Cold massive forming, particularly forward extrusion of steel, is characterized by high material utilization, product quality and resource efficiency. Currently, enormous quantities of mostly ecologically harmful lubricants are required, leading to the demand for lubricant‐free cold forming. Furthermore, cost savings are achievable due to shorter l...
Article
Thin stainless steel sheets with a thickness of 0.4 mm are mainly used in the white goods sector and are subject to high demands in terms of economy and optical quality. In order to meet these requirements, thin stainless steel sheets are deep drawn using thin foils. The use of foils leads to a high environmental impact as well as to further cost-i...
Article
Sheet-metal blanking is a class of metal fabricating processes that separate a metal workpiece from a primary metal sheet through a shearing process. Industry experts observe fluctuations in tool life and product quality, which is associated with fluctuations in microstructural parameters between and along material coils. With a methodology, that p...
Conference Paper
The Internet of Production (IoP) envisions the interconnection of previously isolated CPS in the area of manufacturing across institutional boundaries to realize benefits such as increased profit margins and product quality as well as reduced product development costs and time to market. This interconnection of CPS will lead to a plethora of new da...
Conference Paper
Full-text available
Cold massive forming, particularly forward extrusion of steel, is characterized by high material utilization, product quality and resource efficiency. Currently, enormous quantities of mostly ecologically harmful lubricants are required, leading to the demand for lubricant-free cold forming. Furthermore, cost savings are achievable due to shorter l...
Conference Paper
Highly iterative product development is a promising approach, which enables a continuous inclusion of customers in the product development process. A stronger involvement of customers results in more frequent changes of the required product characteristics while the product is being developed. For the planning of manufacturing technologies, which t...
Conference Paper
The work bowl acceleration of a vibratory finishing machine is mainly determined by the process input variables, e. g. the mass distribution between the upper and the lower imbalance weights, the offset angle between these imbalance weights and the rotational speed of the imbalance motor. The acceleration of the work bowl has a strong effect on the...
Conference Paper
Tool manufacturers are facing a range of urgent challenges such as a rising global demand for energy and a shortage of critical resources. Eco-efficient tool manufacturing and efficient tool use are required to overcome these challenges. Modifying a tool’s manufacturing technology chain leads to changes in the ecological efficiency in its manufactu...
Article
Tools in cold forging processes experience high loads. In order to reduce the process loads, solid and liquid lubricants are used. The use of lubricants is disadvantageous due to ecological, economical, and legislative reasons. Novel approaches in cold forging aim at the use of ecologically benign lubricants or avoiding the usage of lubricants comp...
Article
Highly iterative product development is a promising approach to continuously involve customers in development and to meet global challenges such as short product life cycles and increasing variant diversity. In this context, the planning of production technologies, which takes place in parallel to product development, faces the challenge of process...
Conference Paper
Full-text available
Large-scale cyber-physical systems such as manufacturing lines generate vast amounts of data to guarantee precise control of their machinery. Visions such as the Industrial Internet of Things aim at making this data available also to computation systems outside the lines to increase productivity and product quality. However, rising amounts and comp...
Chapter
Full-text available
The increased usage of advanced high strength steels (AHSS) as materials for car body parts leads to a continuous reduction of car weight and thus a lowering of CO2 emissions. This weight reduction results from the higher yield and tensile strength of AHSS when compared to conventional steel grades. However, the higher strength of AHSS also leads t...
Chapter
The Industrial Internet of Things (IoT) has a major role both in research and in manufacturing companies. There is an international understanding that the greatest economic opportunities of the overall IoT context are found in production optimization. High tolerance requirements prevailing in grinding highlight the necessity and thus represent one...
Article
Full-text available
The reduction of material usage through damage control in metal forming processes provides the potential for cost reduction. The evolution of damage during metal forming processes has been shown to depend on the evolution of equivalent stress, stress triaxiality and the Lode parameter. However, the investigation of stress states does require numeri...
Conference Paper
Full-text available
Fine blanking is one of the leading technologies in sheet metal separation. Its advantages in comparison to punching are to be found in precision and smooth cut of the cut surface. However, fine blanking faces its process limits at elevated sheet thickness and material strength. Especially the process limits in terms of tensile strength tend to be...
Article
Aufgrund von sich ständig verkürzenden Produktlebenszyklen sind produzierende Unternehmen dazu gezwungen, in immer kürzeren Zeiträumen Produktan- und -ausläufe durchzuführen. Die integrierte Herstellung von An- sowie Auslaufprodukt im gemeinsamen Fertigungssystem bietet Potenzial zur gesamtwirtschaftlichen Optimierung der Fertigung. Hieraus resulti...
Article
Zur schleiftechnischen Bearbeitung schwer zerspanbarer Werkstoffe wie Inconel 718 werden in der Industrie überwiegend CBN (kubisch kristallines Bornitrid)-Schleifscheiben verwendet. In der Regel kommt dabei Öl als Kühlschmierstoff zum Einsatz, was jedoch für viele Anwender nicht immer möglich ist. Ziel der Untersuchungen war daher der Vergleich zwi...
Article
Full-text available
Grinding is one of the most important finishing processes in industrial production. During grinding, the workpiece is subjected to thermomechanical loads. Thermal damage can occur in terms of microstructure changes due to a critical temperature history. A holistic model of the relevant physical load fields and their interactions would help describe...
Article
Full-text available
Cemented carbides are brittle-hard materials. Their properties are adjusted by the chemical composition, especially the binder fraction and the average hard phase grain size. This research work focuses on grinding of cemented carbides with tungsten carbide (WC) as hard phase and cobalt (Co) as binder phase material. Previous work showed that the WC...
Article
Full-text available
In order to extend the understanding of damage evolution in sheet metal forming, standardized Nakajima tests are carried out on a DP800 dual phase steel. Sample geometries for characteristic stress-strain states are drawn in incrementing stages and their damage states are analyzed using light and scanning electron microscopy as well as micro hardne...
Article
Due to the high material utilization and the associated resource and energy efficiency, production processes from the field of cold forging of steel are of great importance. At present, environmentally harmful lubricants have to be used to ensure process stability as well as low wear and friction. Due to environmental, economic and legislative aspe...
Conference Paper
Fuel efficiency requirements demand lightweight construction of vehicle body parts. The usage of advanced high strength steels permits a reduction of sheet thickness while still maintaining the overall strength required for crash safety. However, damage, internal defects (voids, inclusions, micro fractures), microstructural defects (varying grain s...
Article
Lightweight structural components made of carbon fibre reinforced plastics are manufactured near-net-shape. However, in order to fulfil geometrical or functional requirements, carbon fibre reinforced plastic components have to be trimmed and pierced in a finish processing step. Shearing is a highly productive technology that is potentially suitable...
Article
Full-text available
Machine hammer peening (MHP) is a high-frequency incremental forming process for surface treatment, which is used on milling machines. Because of the stationary motor spindle as a result of the pneumatic and electrical connections to the hammer head, point loads can occur and may initiate false brinelling wear on the spindle bearing rings. The aim...
Article
Deep rolling is an established mechanical surface treatment technology based on local plastic deformation of the surface layer. By these means, residual stresses, and strain hardening are induced into the surface layer as well as its surface structure is smoothed. Vibrorolling is a derivate technology of deep rolling characterized by sinusoidal rol...
Article
Cutting tools made of polycrystalline diamond (PCD) are used for machining of aluminum alloys, fiber-reinforced plastic composites and wood. Compared to cemented carbide tools with geometrically defined cutting edges, PCD tools offer significant advantages with respect to tool life. High demands regarding the cutting edge roughness and the quality...
Article
Full-text available
The material removal mechanisms of one-phase brittle materials during grinding are largely understood. In contrast, the material removal mechanisms of two-phase brittle materials are just known rudimentary hindering the prediction of the workpiece surface characteristics resulting from a grinding process. Hence, in this work, the material removal m...
Article
Full-text available
For economic reasons, fine blanking of asymmetric parts is performed with shifted and rotated part nesting. It was observed that both the part position and the part orientation on the sheet metal strip affect the die-roll height. Therefore, the influence of the bridge width between the produced cutting line and the strip edge or existing sheared ed...
Article
A targeted adjustment of the dressing results and the methodological influence of the dressing process on the non-stationary wear of a grinding wheel after dressing increases the productivity and the reproducibility of grinding processes. Despite the great economic importance of grinding processes with vitrified corundum grinding wheels and the gre...
Article
Full-text available
The contact force and the relativevelocitybetween workpiece and abrasive media in a vibratory finishing have a strong effect on the material removal rate and the surface roughness of the machined workpieces. Both, the contact force as well as the relative velocity, are mainly influenced by the characteristics of the abrasive media type used as well...
Article
Full-text available
Industrial standard for introducing compressive residual stresses and improving the fatigue life of compressor blades in pumps, martensitic chromium-nickel stainless steel X3CrNiMo13-4 is surface treated by means of shot peening. Due to the process principle, the kinetic impact energy of the shot peening medium is lower and the resulting surface ro...
Article
Full-text available
In fine blanking the sheared edge’s quality is of major importance. As the sheared edge needs to transmit process forces and precisely align parts, attributes like die rolls, tears and tear-offs need to be eliminated. Currently, these attributes are manually determined at the end of the process chain, which makes a complete correlation between infl...
Article
Full-text available
A method for the development of a predictive model for the die roll height in fine blanking using artificial neural networks and support vector machines is presented. Since artificial neural networks require big amounts of training data and generation using experiments is very time consuming and cost intensive, a validated FE model is used instead....
Article
Full-text available
Surface modification of workpieces for cold forming processes is common in industrial practice. Specific surface topographies manufactured by means of shot peening form lubricant pockets, which provide a continuous lubricating film throughout the process. Furthermore, hydrostatic as well as hydrodynamic lubrication effects emerge, which further red...
Article
Full-text available
This paper presents an analytical model to analyze the energy partitioning in grinding based on the process parameters and the grinding wheel topography. Therefore, the energy-partitioning model of Demetriou und Lavine is coupled with a kinematic topography analysis, which predicts the kinematic engagement conditions along the contact zone using me...
Article
In der Schleiftechnik besteht ein erhebliches Wissensdefizit über den Einfluss der Schleifscheibentopographie auf das Schleifprozessverhalten und die Ausbildung der Bauteilrandzoneneigenschaften. Ziel der Untersuchungen war daher die Identifikation und Analyse quantitativer Kenngrößen zur Beschreibung der geometrischen Schleifscheibentopographieeig...
Article
Innenhochdruck-Umformen (IHU) eignet sich durch gute dynamische Materialeigenschaften und einen produktiven Prozess für die Serienfertigung von Bauteilen für die Automobilindustrie. In dieser Arbeit wurde ein neuartiges Werkzeugkonzept entwickelt, um IHU von massiven Napfhalbzeugen auf einer einfach wirkenden Presse zu ermöglichen. Zur Substitution...
Article
Steigende Individualisierung und hohe Marktunsicherheiten zwingen Unternehmen dazu, ihre Kunden kontinuierlich in die Produktentwicklung einzubinden und Produktänderungen auch in späten Entwicklungsphasen zu berücksichtigen. Die hochiterative Entwicklung physischer Produkte bietet ein großes Potenzial, um diesen Herausforderungen zu begegnen, führt...
Article
Der Artikel beschreibt eine systematische Untersuchung des Verschleißes einer keramisch gebundenen Diamantschleifscheibe beim Schleifen von polykristallinem Diamant vom Typ CMX 850 bei variablen Prozesseingangsgrößen. Ein neu entwickelter Versuchsaufbau ermöglicht die Betrachtung eines fortschreitenden Schleifscheibenverschleißes auf mikroskopische...
Article
Kurze Reaktionszeiten auf Produktänderungen zu gewährleisten, ist aktuell eine große Herausforderung im Maschinenbau. Als Lösungen werden zunehmend Metamodelle entwickelt, die einzelne Fertigungsprozesse abbilden und eine schnelle Datenverarbeitung ermöglichen. In diesem Beitrag werden Anforderungen und Lösungsansätze vorgestellt, die eine Verknüpf...
Article
The evaluation of the economic efficiency of machine tools with several integrated manufacturing technologies (multi-technology platforms) is a challenging task. In this article, an approach that enables an economic evaluation and a consideration of thermomechanic interactions in a laser-integrated machine tool is presented, using two case examples...
Article
Kurzfassung Die ökologische Bewertung von Technologien erfolgt bislang unter Berücksichtigung der Herstellungsphase eines Produkts. Effekte, die zu einer Reduktion der Umweltauswirkungen in weiteren Lebensphasen führen, werden vernachlässigt. Daher wurde ein Vorgehensmodell zur Bewertung von Technologien anhand der Umweltauswirkungen des gefertigte...
Article
The relative velocity between workpiece and media has a strong effect on the material removal rate in vibratory finishing. Due to this fact, a measurement system in the form of a camera-integrated workpiece is presented in this paper, which is capable of measuring the relative velocity between the workpiece and the media in an unguided vibratory fi...