@inproceedings{20807,
author = {{Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}},
location = {{Lüttich}},
title = {{{Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains}}},
doi = {{10.25518/esaform21.4298}},
year = {{2021}},
}
@article{30652,
abstract = {{Clinching continuous fibre reinforced thermoplastic composites and metals is challenging due to the low ductility of the composite material. Therefore, a number of novel clinching technologies has been developed specifically for these material combinations. A systematic overview of these advanced clinching methods is given in the present paper. With a focus on process design, three selected clinching methods suitable for different joining tasks are described in detail. The clinching processes including equipment and tools, observed process phenomena and the resultant material structure are compared. Process phenomena during joining are explained in general and compared using computed tomography and micrograph images for each process. In addition the load bearing behaviour and the corresponding failure mechanisms are investigated by means of single-lap shear tests. Finally, the new joining technologies are discussed regarding application relevant criteria.}},
author = {{Gröger, B. and Troschitz, J. and Vorderbrüggen, J. and Vogel, C. and Kupfer, R. and Meschut, G. and Gude, M.}},
journal = {{Materials}},
pages = {{2286}},
title = {{{Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies}}},
doi = {{10.3390/ma14092286X}},
volume = {{14}},
year = {{2021}},
}
@article{30906,
abstract = {{Abstract
Background
Hand amputation can have a truly debilitating impact on the life of the affected person. A multifunctional myoelectric prosthesis controlled using pattern classification can be used to restore some of the lost motor abilities. However, learning to control an advanced prosthesis can be a challenging task, but virtual and augmented reality (AR) provide means to create an engaging and motivating training.
Methods
In this study, we present a novel training framework that integrates virtual elements within a real scene (AR) while allowing the view from the first-person perspective. The framework was evaluated in 13 able-bodied subjects and a limb-deficient person divided into intervention (IG) and control (CG) groups. The IG received training by performing simulated clothespin task and both groups conducted a pre- and posttest with a real prosthesis. When training with the AR, the subjects received visual feedback on the generated grasping force. The main outcome measure was the number of pins that were successfully transferred within 20 min (task duration), while the number of dropped and broken pins were also registered. The participants were asked to score the difficulty of the real task (posttest), fun-factor and motivation, as well as the utility of the feedback.
Results
The performance (median/interquartile range) consistently increased during the training sessions (4/3 to 22/4). While the results were similar for the two groups in the pretest, the performance improved in the posttest only in IG. In addition, the subjects in IG transferred significantly more pins (28/10.5 versus 14.5/11), and dropped (1/2.5 versus 3.5/2) and broke (5/3.8 versus 14.5/9) significantly fewer pins in the posttest compared to CG. The participants in IG assigned (mean ± std) significantly lower scores to the difficulty compared to CG (5.2 ± 1.9 versus 7.1 ± 0.9), and they highly rated the fun factor (8.7 ± 1.3) and usefulness of feedback (8.5 ± 1.7).
Conclusion
The results demonstrated that the proposed AR system allows for the transfer of skills from the simulated to the real task while providing a positive user experience. The present study demonstrates the effectiveness and flexibility of the proposed AR framework. Importantly, the developed system is open source and available for download and further development.
}},
author = {{Boschmann, Alexander and Neuhaus, Dorothee and Vogt, Sarah and Kaltschmidt, Christian and Platzner, Marco and Dosen, Strahinja}},
issn = {{1743-0003}},
journal = {{Journal of NeuroEngineering and Rehabilitation}},
keywords = {{Health Informatics, Rehabilitation}},
number = {{1}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Immersive augmented reality system for the training of pattern classification control with a myoelectric prosthesis}}},
doi = {{10.1186/s12984-021-00822-6}},
volume = {{18}},
year = {{2021}},
}
@article{23948,
author = {{Moritzer, Elmar and Richters, Maximilian and Hillemeyer, Johannes and Krassmann, Dimitri}},
journal = {{Joining Plastics}},
title = {{{Mit dem Schraubblind-Durchsetznieten Metallteile mit Composites bei einseitiger Zugänglichkeit verbinden}}},
year = {{2021}},
}
@article{23886,
author = {{Kastein, Mara and Finke, Josefine and Horwath, Ilona}},
issn = {{2196-3886}},
journal = {{Voluntaris}},
pages = {{135--151}},
title = {{{Florian braucht Mehmet mehr als umgekehrt: Herausforderungen und Potenziale für Inklusion in der Freiwilligen Feuerwehr}}},
doi = {{10.5771/2196-3886-2021-1-135}},
year = {{2021}},
}
@misc{24446,
booktitle = {{Erscheinungsformen, Erklärungsversuche und Gegenstrategien, GENDER }},
editor = {{Kastein, Mara and Horwath, Ilona and Finke, Josefine and Duglar Sezer, Nilgün}},
pages = {{92--107}},
title = {{{Ohne den ‚Weissen Mann‘ würden Leute wie Sie noch in Erdhöhlen wohnen.“ - Die Markierung der Unmarkierten}}},
doi = {{doi.org/10.3224/84742528.01}},
year = {{2021}},
}
@inbook{24477,
author = {{Horwath, Ilona and Kastein, Mara and Duglar Sezer, Nilgün}},
booktitle = {{Feuerwehren im Spiegel gesellschaftlicher Diversität}},
editor = {{Duglar Sezer, Nilgün and Horwath, Ilona and Kastein, Mara}},
title = {{{Feuerwehren im Spiegel gesellschaftlicher Diversität}}},
year = {{2021}},
}
@article{24172,
abstract = {{In dem Artikel werden die Metaphern gleichstellungsorientierter Männerpolitik als eine Form diskursiver Praktiken untersucht. In meiner Dissertation habe ich die Metaphernanalyse ergänzend zur Grounded-Theory-Methodologie und zur wissenssoziologischen Diskursanalyse genutzt, um die Ergebnisse zu verdichten und zu vertiefen. Dabei stellt die Metaphorik der gleichstellungsorientierten Männerpolitik selbige als instabil, schwankend, balancierend und uneinig dar, denn sie wird als schwankendes Schiff, welches ohne feste Route auf dem Meer schaukelt, imaginiert. Das Meer ist die Gesellschaft bzw. die übergeordnete Gleichstellungspolitik. Diese wird als unberechenbar und launisch konzipiert, und die gleichstellungsorientierte Männerpolitik erscheint dabei als ausgeliefert.}},
author = {{Kastein, Mara}},
journal = {{ Forum Qualitative Sozialforschung}},
title = {{{Das schwankende Schiff der Männerpolitik: eine Metaphernanalyse}}},
doi = {{10.17169/FQS-22.2.3597}},
year = {{2021}},
}
@misc{24175,
booktitle = {{Gender a výzkum / Gender and Research}},
editor = {{Alemann, v.Annette and Gruhlich, Julia and Horwath, Ilona and Weber, Lena}},
issn = {{2570-6578}},
pages = {{86--102}},
title = {{{International Perspectives about COVID-19, Digital Labour and Gender Work Pattern: A Collective Interview}}},
doi = {{10.13060/gav.2020.014}},
year = {{2021}},
}
@misc{24173,
booktitle = {{Gender a výzkum / Gender and Research}},
editor = {{Alemann, v. Annette and Gruhlich, Julia and Horwath, Ilona and Weber, Lena}},
issn = {{2570-6578}},
pages = {{3--12}},
title = {{{A Plea to Reflect on the Entanglements of Gendered Work Patterns and Digital Technologies}}},
doi = {{10.13060/gav.2020.009}},
year = {{2021}},
}
@article{25476,
abstract = {{This study deals with the damage behavior of metallic materials by the application of different manufacturing processes and using different optical measurement methods to identify the crack initiation in the damage specimen. The study is intended to highlight the importance of considering manufacturing processes and optical measurement methods in a numerical simulation when analyzing the damage behavior of metallic materials. To describe the damage behavior of the material in the process chain simulations, it is important to calibrate the parameters of damage model more accurately. These parameters are determined using experimental investigation of desired damage specimens. In this regard, a selected damage specimen manufactured by different cutting processes is first experimentally and then numerically investigated. It is shown that the manufacturing process and the optical measurement methods influence the stress state analyzed in the numerical simulation.}},
author = {{Otroshi, Mortaza and Meschut, Gerson and Nesakumar, Aathavan}},
journal = {{Journal of Manufacturing Engineering}},
keywords = {{Damage behaviour, Stress triaxiality, Manufacturing process and Optical measurement}},
number = {{3}},
pages = {{70--76}},
title = {{{The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels}}},
doi = {{https://doi.org/10.37255/jme.v16i3pp070-076}},
volume = {{16}},
year = {{2021}},
}
@book{22032,
abstract = {{The Arburg Plastic Freeforming (APF) is an additive manufacturing process which allows the production of three-dimensional thermoplastic components in layers. The components are produced by depositing fine, molten plastic droplets. The main advantage of the APF is the open-parameter control of the associated machine system. Thus, the process parameters can be optimized for individual applications. A special and new application of the APF is the production of interconnecting porous structures. As this is a novel approach with this manufacturing process, the general producibility and reproducibility must first be proven. Therefore, the relevant process parameters with an influence on the open-pored structures are identified. The volume of the individual plastic droplets, the distance between the droplets and the layer thickness are the three decisive influencing factors. With the use of analysis methods, the free spaces created in the structure are described by a uniformly constructed, interconnected pore structure. This means that the pores are interconnected in three dimensions. Reproducibility is evaluated by repeated production and thru the changed conditions during the manufacturing process. In addition, the multiplication and a change of geometry are evaluated in such a way that there is no influence on the pore size. Irregularities when depositing the first layer are caused by unevenness of the building platform. A suitable test arrangement is set up to determine the liquid permeability. A characteristic value is determined to describe the permeability to liquids.}},
author = {{Moritzer, Elmar and Hirsch, André and Dalmer, C.}},
isbn = {{978-3-030-54333-4}},
pages = {{112--129}},
publisher = {{Springer}},
title = {{{Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability}}},
doi = {{10.1007/978-3-030-54334-1}},
year = {{2021}},
}
@article{24162,
author = {{Moritzer, Elmar and Wächter, Julian and Elsner, Christian Lennart}},
journal = {{Macromolecular Symposia}},
number = {{1}},
publisher = {{Wiley}},
title = {{{Investigation of Specific FDM Process Parameters to Optimize the Polymer Discharge of Carbon Fiber Reinforced PEEK}}},
doi = {{10.1002/masy.202000269}},
volume = {{395}},
year = {{2021}},
}
@article{24681,
author = {{Moritzer, Elmar and Schumacher, Christian}},
issn = {{1022-1360}},
journal = {{Macromolecular Symposia}},
number = {{1}},
title = {{{Stainless Steel Parts Produced by Fused Deposition Modeling and a Sintering Process Compared to Components Manufactured in Selective Laser Melting}}},
doi = {{10.1002/masy.202000275}},
volume = {{395}},
year = {{2021}},
}
@article{21810,
author = {{Otroshi, Mortaza and Meschut, Gerson and Bielak, Christian Roman and Masendorf, Lukas and Esderts, Alfons}},
issn = {{1662-9795}},
journal = {{Key Engineering Materials}},
pages = {{35--40}},
publisher = {{Trans Tech Publications Ltd}},
title = {{{Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components}}},
doi = {{https://doi.org/10.4028/www.scientific.net/KEM.883.35}},
volume = {{883}},
year = {{2021}},
}
@inproceedings{24554,
author = {{Moritzer, Elmar and Elsner, Christian Lennart and Wächter, Julian and Knoop, Frederick}},
booktitle = {{79th Annual Technical Conference of the Society of Plastics Engineers (ANTEC)}},
title = {{{Investigation and Realization of Watertight FDM Structures Made of Ultem 9085 in Pressurized Systems}}},
year = {{2021}},
}
@article{23867,
abstract = {{The joining of plastics is required because component geometries are severely restricted in conventional manufacturing processes such as injection molding or extrusion. In addition to established processes such as hot plate welding, infrared welding, or vibration welding, hot gas butt welding is becoming more and more important industrially due to its advantages. The main benefits are the contactless heating process, the suitability for glass fiber reinforced, and high-temperature plastics as well as complex component geometries. However, various degradation phenomena can occur during the heating process used for economic reasons, due to the presence of oxygen in the air and to the high gas temperatures. In addition, the current patent situation suggests that welding with an oxidizing gas is not permissible depending on the material. On the other hand, however, there is experience from extrusion welding, with which long-term resistant weld seams can be produced using air. Investigations have shown that the same weld seam properties can be achieved with polypropylene using either air or nitrogen as the process gas. Experimental investigations have now been carried out on the suitability of different gases with regard to the weld seam quality when welding polyamides, which are generally regarded as more prone to oxidation. The results show that weld strengths are higher when nitrogen is used as process gas. However, equal weld strengths can be achieved with air and nitrogen when the material contains heat stabilizers.}},
author = {{Bialaschik, Max and Schöppner, Volker and Albrecht, Mirko and Gehde, Michael}},
issn = {{0043-2288}},
journal = {{Welding in the World}},
pages = {{1161--1169}},
title = {{{Influence of material degradation on weld seam quality in hot gas butt welding of polyamides}}},
doi = {{10.1007/s40194-021-01108-0}},
year = {{2021}},
}
@article{24555,
author = {{Moritzer, Elmar and Elsner, Christian Lennart and Schumacher, Christian}},
issn = {{0272-8397}},
journal = {{Polymer Composites}},
number = {{11}},
pages = {{6065--6079}},
title = {{{Investigation of Metal‐Polymer Composites Manufactured by Fused Deposition Modeling with Regard to Process Parameters}}},
doi = {{10.1002/pc.26285}},
volume = {{42}},
year = {{2021}},
}
@inproceedings{26821,
author = {{Wibbeke, Tim Michael and Bartley, Auerélie and Chudalla, Nick and Meschut, Gerson}},
booktitle = {{Fahrzeug + Karosserie und kfz-betrieb (Hrsg,); Tagungsband zu den Würzburger Karosserie- und Schadenstagen 22./23. Oktober 2021}},
title = {{{Fügen und Trennen von Kfz-Karosseriestrukturen in Leichtbauweise}}},
year = {{2021}},
}
@article{21814,
author = {{Gröger, Benjamin and Troschitz, Juliane and Vorderbrüggen, Julian and Vogel, Christian and Kupfer, Robert and Meschut, Gerson and Gude, Maik}},
journal = {{Materials}},
publisher = {{MDPI}},
title = {{{Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies}}},
doi = {{https://doi.org/ 10.3390/ma14092286}},
year = {{2021}},
}