@inproceedings{28212,
  author       = {{Bothe, Mike and Lutters, Nicole and Kenig, Eugeny Y.}},
  location     = {{Brno}},
  title        = {{{Examination of hazardous situations in industrial closed-loop processes using dynamic simulations}}},
  year         = {{2021}},
}

@inproceedings{22461,
  author       = {{Bothe, Mike and Lutters, Nicole and Kenig, Eugeny Y.}},
  location     = {{online-Konferenz (Frankfurt)}},
  publisher    = {{ACHEMA pulse}},
  title        = {{{Dynamic simulation of hazardous situations in industrial closed loop processes considering chemical absorption}}},
  year         = {{2021}},
}

@article{33895,
  abstract     = {{<jats:p>Heat-assisted forming processes are becoming increasingly important in the manufacturing of sheet metal parts for body-in-white applications. However, the non-isothermal nature of these processes leads to challenges in evaluating the forming limits, since established methods such as Forming Limit Curves (FLCs) only allow the assessment of critical forming strains for steady temperatures. For this reason, a temperature-dependent extension of the well-established GISSMO (Generalized Incremental Stress State Dependent Damage Model) fracture indicator framework is developed by the authors to predict forming failures under non-isothermal conditions. In this paper, a general approach to combine several isothermal FLCs within the temperature-extended GISSMO model into a temperature-dependent forming limit surface is investigated. The general capabilities of the model are tested in a coupled thermo-mechanical FEA using the example of warm forming of an AA5182-O sheet metal cross-die cup. The obtained results are then compared with state of the art of evaluation methods. By taking the strain and temperature path into account, GISSMO predicts greater drawing depths by up to 20% than established methods. In this way the forming and so the lightweight potential of sheet metal parts can by fully exploited. Moreover, the risk and locus of failure can be evaluated directly on the part geometry by a contour plot. An additional advantage of the GISSMO model is the applicability for low triaxialities as well as the possibility to predict the materials behavior beyond necking up to ductile fracture.</jats:p>}},
  author       = {{Camberg, Alan Adam and Erhart, Tobias and Tröster, Thomas}},
  issn         = {{1996-1944}},
  journal      = {{Materials}},
  keywords     = {{General Materials Science}},
  number       = {{17}},
  publisher    = {{MDPI AG}},
  title        = {{{A Generalized Stress State and Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted Forming Operations}}},
  doi          = {{10.3390/ma14175106}},
  volume       = {{14}},
  year         = {{2021}},
}

@article{25046,
  abstract     = {{<jats:p>While increasing digitalization enables multiple advantages for a reliable operation of technical systems, a remaining challenge in the context of condition monitoring is seen in suitable consideration of uncertainties affecting the monitored system. Therefore, a suitable prognostic approach to predict the remaining useful lifetime of complex technical systems is required. To handle different kinds of uncertainties, a novel Multi-Model-Particle Filtering-based prognostic approach is developed and evaluated by the use case of rubber-metal-elements. These elements are maintained preventively due to the strong influence of uncertainties on their behavior. In this paper, two measurement quantities are compared concerning their ability to establish a prediction of the remaining useful lifetime of the monitored elements and the influence of present uncertainties. Based on three performance indices, the results are evaluated. A comparison with predictions of a classical Particle Filter underlines the superiority of the developed Multi-Model-Particle Filter. Finally, the value of the developed method for enabling condition monitoring of technical systems related to uncertainties is given exemplary by a comparison between the preventive and the predictive maintenance strategy for the use case.</jats:p>}},
  author       = {{Bender, Amelie}},
  issn         = {{2075-1702}},
  journal      = {{Machines}},
  keywords     = {{prognostics, RUL predictions, particle filter, uncertainty consideration, Multi-Model-Particle Filter, model-based approach, rubber-metal-elements, predictive maintenance}},
  number       = {{10}},
  title        = {{{A Multi-Model-Particle Filtering-Based Prognostic Approach to Consider Uncertainties in RUL Predictions}}},
  doi          = {{10.3390/machines9100210}},
  volume       = {{9}},
  year         = {{2021}},
}

@article{30698,
  author       = {{Gröger, B. and Köhler, D. and Vorderbrüggen, J. and Troschitz, J. and Kupfer, R. and Meschut, G. and Gude, M.}},
  journal      = {{Production Engineering}},
  title        = {{{Computed tomography investigation of the material structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets}}},
  doi          = {{10.1007/s11740-021-01091-x}},
  year         = {{2021}},
}

@article{35327,
  author       = {{Wortmann, Martin and Viertel, Klaus and Welle, Alexander and Keil, Waldemar and Frese, Natalie and Hachmann, Wiebke and Krieger, Philipp and Brikmann, Johannes and Schmidt, Claudia and Moritzer, Elmar and Hüsgen, Bruno}},
  issn         = {{0017-9310}},
  journal      = {{International Journal of Heat and Mass Transfer}},
  keywords     = {{Fluid Flow and Transfer Processes, Mechanical Engineering, Condensed Matter Physics}},
  publisher    = {{Elsevier BV}},
  title        = {{{Anomalous bulk diffusion of methylene diphenyl diisocyanate in silicone elastomer}}},
  doi          = {{10.1016/j.ijheatmasstransfer.2021.121536}},
  volume       = {{177}},
  year         = {{2021}},
}

@inproceedings{35512,
  author       = {{Haak, Viktor and Meschut, Gerson and Reisgen, Uwe and Schiebahn, Alexander and Epperlein, Maike}},
  booktitle    = {{11. Fügetechnisches Gemeinschaftskolloquium}},
  location     = {{Dresden}},
  title        = {{{Einseitiges Widerstandselementschweißen für die stahlintensive Mischbauweise (eWES)}}},
  year         = {{2021}},
}

@inproceedings{24580,
  author       = {{Rüther, Moritz Johannes}},
  title        = {{{Adaption of a PGSS-System for the production of SLS-Materials}}},
  year         = {{2021}},
}

@inproceedings{31750,
  author       = {{Köllermeier, Jonas and Schöppner, Volker}},
  booktitle    = {{36th International Conference of the Polymer Processing  Society (PPS)}},
  location     = {{Montreal (Kanada)}},
  title        = {{{Development of a Dynamic Strategy to Determine the Optimal Barrel  Temperature of Single Screw Extruders}}},
  year         = {{2021}},
}

@article{24037,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Innovation projects are characterized by numerous uncertainties. Typical concepts in development management like the application of safety coefficients imply limitations of the solution space. In contrast, explicit handling of uncertainties can support engineers in understanding the problem space and in utilising the full potential of the design space along iterative product development steps. As a result from literature analysis, there is a lack of a support for product development that addresses the specific problem of uncertainty and risk in the context of requirement changes. The aim of the contribution at hand is to enhance the efficient development of complex interdisciplinary systems by enabling uncertainty handling in requirements change management. Based on a classification of uncertainty types resulting in a descriptive model, risk management measures are identified to support requirements engineers. The proposed method includes identification &amp; modelling, analysis, treatment and monitoring of risks and counter-measures. By applying this method, engineers are supported in adopting agile approaches and enabling flexible Requirements Engineering.</jats:p>}},
  author       = {{Gräßler, Iris and Pottebaum, Jens and Oleff, Christian and Preuß, Daniel}},
  issn         = {{2732-527X}},
  journal      = {{Proceedings of the Design Society}},
  location     = {{Gothenburg}},
  pages        = {{1687--1696}},
  title        = {{{Handling of explicit Uncertainty in Requirements Change Management}}},
  doi          = {{10.1017/pds.2021.430}},
  volume       = {{1}},
  year         = {{2021}},
}

@inproceedings{25534,
  author       = {{Gräßler, Iris and Pottebaum, Jens and Roesmann, Daniel and Mandischer, Nils and Gürtler, Marius and Hüsing, Mathias and Corves, Burkhard}},
  booktitle    = {{Mensch und Computer 2021 - Workshopband}},
  editor       = {{Wienrich, C. and Wintersberger, P. and Weyers, B.}},
  title        = {{{Fähigkeitsorientierte Aufgabenzuordnung für die Mensch-Roboter-Kollaboration in sicherheitskritischen Einsatzsituationen}}},
  doi          = {{10.18420/muc2021-mci-ws08-376}},
  year         = {{2021}},
}

@inproceedings{23511,
  author       = {{Gräßler, Iris and Roesmann, Daniel and Pottebaum, Jens}},
  booktitle    = {{14th CIRP Conference on Intelligent Computation in Manufacturing Engineering; 15. - 17. Jul. 2020}},
  pages        = {{57--62}},
  publisher    = {{Elsevier B. V.}},
  title        = {{{Model based Integration of Human Characteristics in Production Systems: A Literature Survey}}},
  doi          = {{https://doi.org/10.1016/j.procir.2021.03.010}},
  year         = {{2021}},
}

@article{23390,
  author       = {{Gräßler, Iris and Pottebaum, Jens}},
  journal      = {{ Applied Sciences}},
  pages        = {{4516}},
  title        = {{{Generic Product Lifecycle Model: A Holistic and Adaptable Approach for Multi-Disciplinary Product-Service Systems}}},
  doi          = {{10.3390/app11104516}},
  volume       = {{11}},
  year         = {{2021}},
}

@article{24456,
  abstract     = {{One objective of current research in explainable intelligent systems is to implement social aspects in order to increase the relevance of explanations. In this paper, we argue that a novel conceptual framework is needed to overcome shortcomings of existing AI systems with little attention to processes of interaction and learning. Drawing from research in interaction and development, we first outline the novel conceptual framework that pushes the design of AI systems toward true interactivity with an emphasis on the role of the partner and social relevance. We propose that AI systems will be able to provide a meaningful and relevant explanation only if the process of explaining is extended to active contribution of both partners that brings about dynamics that is modulated by different levels of analysis. Accordingly, our conceptual framework comprises monitoring and scaffolding as key concepts and claims that the process of explaining is not only modulated by the interaction between explainee and explainer but is embedded into a larger social context in which conventionalized and routinized behaviors are established. We discuss our conceptual framework in relation to the established objectives of transparency and autonomy that are raised for the design of explainable AI systems currently.}},
  author       = {{Rohlfing, Katharina J. and Cimiano, Philipp and Scharlau, Ingrid and Matzner, Tobias and Buhl, Heike M. and Buschmeier, Hendrik and Esposito, Elena and Grimminger, Angela and Hammer, Barbara and Haeb-Umbach, Reinhold and Horwath, Ilona and Hüllermeier, Eyke and Kern, Friederike and Kopp, Stefan and Thommes, Kirsten and Ngonga Ngomo, Axel-Cyrille and Schulte, Carsten and Wachsmuth, Henning and Wagner, Petra and Wrede, Britta}},
  issn         = {{2379-8920}},
  journal      = {{IEEE Transactions on Cognitive and Developmental Systems}},
  keywords     = {{Explainability, process ofexplaining andunderstanding, explainable artificial systems}},
  number       = {{3}},
  pages        = {{717--728}},
  title        = {{{Explanation as a Social Practice: Toward a Conceptual Framework for the Social Design of AI Systems}}},
  doi          = {{10.1109/tcds.2020.3044366}},
  volume       = {{13}},
  year         = {{2021}},
}

@inbook{49487,
  author       = {{Malancu, Natalia and Florea, Alexandra}},
  booktitle    = {{Handbook of Citizenship and Migration}},
  editor       = {{Giugni, Marco and Grasso, Maria}},
  title        = {{{Chapter 5: Quantitative methodological approaches to citizenship and migration}}},
  doi          = {{https://doi.org/10.4337/9781789903133.00011}},
  year         = {{2021}},
}

@article{23469,
  abstract     = {{The implementation of control systems in metal forming processes improves product quality and productivity. By controlling workpiece properties during the process, beneficial effects caused by forming can be exploited and integrated in the product design. The overall goal of this investigation is to produce tailored tubular parts with a defined locally graded microstructure by means of reverse flow forming. For this purpose, the proposed system aims to control both the desired geometry of the workpiece and additionally the formation of strain-induced α′-martensite content in the metastable austenitic stainless steel AISI 304 L. The paper introduces an overall control scheme, a geometry model for describing the process and changes in the dimensions of the workpiece, as well as a material model for the process-induced formation of martensite, providing equations based on empirical data. Moreover, measurement systems providing a closed feedback loop are presented, including a novel softsensor for in-situ measurements of the martensite content.}},
  author       = {{Riepold, Markus and Arian, Bahman and Vasquez, Julian Rozo and Homberg, Werner and Walther, Frank and Trächtler, Ansgar}},
  issn         = {{2666-9129}},
  journal      = {{Advances in Industrial and Manufacturing Engineering}},
  title        = {{{Model approaches for closed-loop property control for flow forming}}},
  doi          = {{10.1016/j.aime.2021.100057}},
  year         = {{2021}},
}

@inproceedings{24101,
  abstract     = {{Arburg Plastic Freeforming (APF) is an additive manufacturing process with which three-dimensional, thermoplastic components can be produced layer by layer. Visual and geometrical properties are a major criterion for characterizing the resulting component quality. The aim of this study was to investigate the influences on visual and geometrical properties of APF components depending on process parameters. Initially the focus was on the analysis of the shrinkage behavior of ABS-M30 (Stratasys). On the basis of the results and an existing procedure by the machine manufacturer, an optimized procedure for determining the scaling factors was developed to counteract the shrinkage. With this procedure a higher dimensional accuracy of the components can be achieved. In addition, it was investigated whether an adaption of the form factor based on a mathematical model depending on the component geometry makes sense. The results were transferred into manufacturing guidelines, which allow the user of the APF-technology to optimize process parameters more efficiently.}},
  author       = {{Moritzer, Elmar and Hecker, Felix and Elsner, Christian Lennart and Hirsch, André}},
  booktitle    = {{Proceedings: 2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)}},
  editor       = {{Bourell, David}},
  location     = {{Austin, Texas, USA}},
  pages        = {{467--474}},
  title        = {{{Investigations for the Optimization of Visual and Geometrical Properties of Arburg Plastic Freeforming Components}}},
  doi          = {{10.26153/tsw/17567}},
  year         = {{2021}},
}

@inproceedings{24099,
  abstract     = {{The additive manufacturing process Fused Deposition Modeling (FDM) is established in the industry for many years. A new, similar process to FDM is the Arburg Plastic Freeforming (APF). The main differences between both processes are the form of the starting material (FDM: Filaments, APF: Conventional granulate) and the material deposition during the layer formation (FDM: Melt strand, APF: fine molten droplets).
Since the two processes can be used in similar applications, the aim of this study is to compare both processes in a holistic way. Furthermore, the advantages and disadvantages of the processes are to be highlighted. The systematic comparison between a Stratasys 400mc and the Freeformer 200-3X is divided into the areas of component properties, design limitations and economic efficiency. The material ABS-M30 (Stratasys) is used in both processes. The results show comparable component properties regarding mechanical and optical properties but also differences in design limitations and cost efficiency.
}},
  author       = {{Moritzer, Elmar and Hecker, Felix and Driediger, Christine and Hirsch, André}},
  booktitle    = {{Proceedings: 2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)}},
  editor       = {{Bourell, David}},
  location     = {{Austin, Texas, USA}},
  pages        = {{575--584}},
  title        = {{{Comparison of Component Properties and Economic Efficiency of the Arburg Plastic Freeforming and Fused Deposition Modeling}}},
  doi          = {{10.26153/tsw/17577}},
  year         = {{2021}},
}

@inproceedings{24096,
  abstract     = {{The Arburg Plastic Freeforming (APF) is an additive manufacturing process with which three-dimensional, thermoplastic components can be produced layer by layer. One disadvantage of the APF is the long residence time of the molten material in the plasticizing unit compared to conventional injection moulding. The dosing volume is emptied very slowly due to only discharging fine plastic droplets. As a result, long residence times can be expected, which can lead to thermal degradation of the material.
The aim of this study was to develop a model for calculating the residence time of the material in the APF. The residence time of the material in the thermally critical dosing volume is predicted using software developed in-house. The accuracy of the model could be verified by experimental investigations. Finally, the thermal degradation of the material was investigated by analyzing the correlation to the mechanical properties of tensile strength specimens.
}},
  author       = {{Moritzer, Elmar and Hecker, Felix and Hirsch, André}},
  booktitle    = {{Proceedings: 2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)}},
  editor       = {{Bourell, David}},
  location     = {{Austin, Texas, USA}},
  pages        = {{1268--1275}},
  title        = {{{Investigation and Modeling of the Residence Time Dependent Material Degradation in the Arburg Plastic Freeforming}}},
  doi          = {{10.26153/tsw/17643}},
  year         = {{2021}},
}

@inproceedings{24160,
  abstract     = {{In automotive and other fields of application media-carrying components often have complex, flow-optimized geometries and are made of plastics for reasons of weight and cost. Therefore, the laser sintering technology is predestinated to manufacture these components as it offers a very high degree of design freedom and good mechanical properties.
For industrial applications the long-term properties of the SLS material in contact with liquid media are important and were therefore investigated for PA12, PP and PA613. Hereby, different media such as motor oil or Glysantin based coolant were tested with different temperatures and immersion times of up to 26 weeks. The mechanical properties were tested after immersion and compared to injection molded samples. Furthermore, laser sintering design guidelines for media-carrying components were developed. These guidelines for instance include the minimum wall thickness to ensure media tightness and the removal of powder from channels with a high length to diameter ratio.}},
  author       = {{Kletetzka, Ivo and Kummert, Christina and Schmid, Hans-Joachim}},
  booktitle    = {{Proceedings of the 32nd Annual International Solid Freeform Fabrication Symposium}},
  location     = {{Austin}},
  publisher    = {{Laboratory for Freeform Fabrication and University of Texas}},
  title        = {{{Laser Sintering Design Guidelines for media transmitting Components}}},
  doi          = {{http://dx.doi.org/10.26153/tsw/17548}},
  volume       = {{32}},
  year         = {{2021}},
}