@article{AnikFrohberg1988, author = {Anik, Sabri and Frohberg, Martin G.}, title = {Thermodynamics of oxygen in the copper-antimony system at 1473K}, series = {Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik}, volume = {41}, journal = {Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik}, number = {10}, issn = {0044-2658}, pages = {498 -- 501}, year = {1988}, language = {en} } @article{FrohbergAnik1986, author = {Frohberg, Martin G. and Anik, Sabri}, title = {Untersuchungen zum L{\"o}sungsverhalten von Sauerstoff in Metallschmelzen}, series = {Neue H{\"u}tte : metallurgisch-metallkundliche Fachzeitschrift f{\"u}r Forschung und Praxis}, volume = {31}, journal = {Neue H{\"u}tte : metallurgisch-metallkundliche Fachzeitschrift f{\"u}r Forschung und Praxis}, number = {7}, issn = {0028-3207}, pages = {255 -- 258}, year = {1986}, language = {de} } @article{FrohbergAnik1986, author = {Frohberg, Martin G. and Anik, Sabri}, title = {Experimentelle Ergebnisse zum L{\"o}sungsverhalten von Sauerstoff in den Systemen Cu-O-Bi und Cu-O-Pb}, series = {Neue H{\"u}tte : metallurgisch-metallkundliche Fachzeitschrift f{\"u}r Forschung und Praxis}, volume = {31}, journal = {Neue H{\"u}tte : metallurgisch-metallkundliche Fachzeitschrift f{\"u}r Forschung und Praxis}, number = {9}, issn = {0028-3207}, pages = {344 -- 347}, year = {1986}, language = {de} } @article{AnikTopuzTuncel1991, author = {Anik, Sabri and Topuz, A. and Tuncel, H. S.}, title = {Einfluß der Parameter beim Diffusionsschweißen der St{\"a}hle X 210 Cr 12 und 25 MoCr 4 auf ihre mechanischen Eigenschaften}, series = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren}, volume = {43}, journal = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren}, number = {6}, issn = {0036-7184}, pages = {341 -- 344}, year = {1991}, language = {de} } @article{PeekenBennerPlatt1989, author = {Peeken, Heinz and Benner, Joachim and Platt, Werner}, title = {Ausfallkriterien elastomerbest{\"u}ckter Wellenkupplungen}, series = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.}, volume = {28}, journal = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.}, number = {11}, publisher = {Vereinigte Fachverl.}, address = {Mainz}, issn = {0341-2652}, pages = {85 -- 88}, year = {1989}, language = {de} } @article{EichlerBalcBremenetal.2024, author = {Eichler, Fabian and Balc, Nicolae and Bremen, Sebastian and Nink, Philipp}, title = {Investigation of laser powder bed fusion parameters with respect to their influence on the thermal conductivity of 316L samples}, series = {Journal of Manufacturing and Materials Processing}, volume = {8}, journal = {Journal of Manufacturing and Materials Processing}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {2504-4494}, doi = {10.3390/jmmp8040166}, pages = {12 Seiten}, year = {2024}, abstract = {The thermal conductivity of components manufactured using Laser Powder Bed Fusion (LPBF), also called Selective Laser Melting (SLM), plays an important role in their processing. Not only does a reduced thermal conductivity cause residual stresses during the process, but it also makes subsequent processes such as the welding of LPBF components more difficult. This article uses 316L stainless steel samples to investigate whether and to what extent the thermal conductivity of specimens can be influenced by different LPBF parameters. To this end, samples are set up using different parameters, orientations, and powder conditions and measured by a heat flow meter using stationary analysis. The heat flow meter set-up used in this study achieves good reproducibility and high measurement accuracy, so that comparative measurements between the various LPBF influencing factors to be tested are possible. In summary, the series of measurements show that the residual porosity of the components has the greatest influence on conductivity. The degradation of the powder due to increased recycling also appears to be detectable. The build-up direction shows no detectable effect in the measurement series.}, language = {en} } @article{RaffeisAdjeiKyeremehVroomenetal.2020, author = {Raffeis, Iris and Adjei-Kyeremeh, Frank and Vroomen, Uwe and Westhoff, Elmar and Bremen, Sebastian and Hohoi, Alexandru and B{\"u}hrig-Polaczek, Andreas}, title = {Qualification of a Ni-Cu alloy for the laser powder bed fusion process (LPBF): Its microstructure and mechanical properties}, series = {Applied Sciences}, volume = {10}, journal = {Applied Sciences}, number = {Art. 3401}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app10103401}, pages = {1 -- 15}, year = {2020}, abstract = {As researchers continue to seek the expansion of the material base for additive manufacturing, there is a need to focus attention on the Ni-Cu group of alloys which conventionally has wide industrial applications. In this work, the G-NiCu30Nb casting alloy, a variant of the Monel family of alloys with Nb and high Si content is, for the first time, processed via the laser powder bed fusion process (LPBF). Being novel to the LPBF processes, optimum LPBF parameters were determined, and hardness and tensile tests were performed in as-built conditions and after heat treatment at 1000 °C. Microstructures of the as-cast and the as-built condition were compared. Highly dense samples (99.8\% density) were achieved after varying hatch distance (80 µm and 140 µm) with scanning speed (550 mm/s-1500 mm/s). There was no significant difference in microhardness between varied hatch distance print sets. Microhardness of the as-built condition (247 HV0.2) exceeded the as-cast microhardness (179 HV0.2.). Tensile specimens built in vertical (V) and horizontal (H) orientations revealed degrees of anisotropy and were superior to conventionally reported figures. Post heat treatment increased ductility from 20\% to 31\% (V), as well as from 16\% to 25\% (H), while ultimate tensile strength (UTS) and yield strength (YS) were considerably reduced.}, language = {en} } @article{RakeSchwanhaeusserFrederichetal.1993, author = {Rake, Heinrich and Schwanh{\"a}ußer, Wulf and Frederich, Fritz and Enning, Manfred}, title = {Automatisierung von Ablaufanlagen mit dem Kupplungsroboter}, series = {ETR - Eisenbahntechnische Rundschau}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {4}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {249 -- 254}, year = {1993}, language = {de} } @article{RakeEnningKurthetal.1994, author = {Rake, Heinrich and Enning, Manfred and Kurth, Johannes and Schr{\"o}der, Walter}, title = {Automatic uncoupler completes automation at the hump}, series = {RGI - Railway Gazette International}, volume = {150}, journal = {RGI - Railway Gazette International}, number = {6}, publisher = {Reed Business}, address = {Sutton}, issn = {0373-5346}, pages = {371 -- 374}, year = {1994}, language = {en} } @article{ManfredMaySutter2020, author = {Manfred, Enning and May, J{\"o}rg and Sutter, Stefan}, title = {Innovation am G{\"u}terwagen am Beispiel der Automatischen Bremsprobe}, series = {ETR - Eisenbahntechnische Rundschau}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {12}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {14 -- 19}, year = {2020}, abstract = {Mit der Digitalen Automatischen Kupplung beginnt ein neues Kapitel des Schieneng{\"u}terverkehrs, in dem zusammengestellte Wagen sich automatisch in wenigen Minuten abfahrbereit machen, ohne dass der Mensch eingreifen muss. Eines des gr{\"o}ßten Hemmnisse der umweltfreundlichen Schiene wird dann entfallen. Notwendig ist jetzt eine Diskussion {\"u}ber den Umfang und die Systemgrenzen der Automatischen Bremsprobe.}, language = {de} } @article{EnningSchmidtWilbring2019, author = {Enning, Manfred and Schmidt, Bernd and Wilbring, Daniela}, title = {Auf dem Weg zur autonomen Anschlussbedienung}, series = {Privatbahn-Magazin}, journal = {Privatbahn-Magazin}, number = {3}, publisher = {Bahn Media}, address = {Suhlendorf}, issn = {1865-0163}, pages = {40 -- 43}, year = {2019}, language = {de} } @article{GebhardtSchmidtHoetteretal.2010, author = {Gebhardt, Andreas and Schmidt, Frank-Michael and H{\"o}tter, Jan-Steffen and Sokalla, Wolfgang and Sokalla, Patrick}, title = {Additive manufacturing by selective laser melting the realizer desktop machine and its application for the dental industry}, series = {Physics Procedia}, volume = {5 B}, journal = {Physics Procedia}, number = {2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1875-3892}, doi = {10.1016/j.phpro.2010.08.082}, pages = {543 -- 549}, year = {2010}, abstract = {Additive Manufacturing of metal parts by Selective Laser Melting has become a powerful tool for the direct manufacturing of complex parts mainly for the aerospace and medical industry. With the introduction of its desktop machine, Realizer targeted the dental market. The contribution describes the special features of the machine, discusses details of the process and shows manufacturing results focused on metal dental devices.}, language = {en} } @article{AbbasHedwigBalcetal.2023, author = {Abbas, Karim and Hedwig, Lukas and Balc, Nicolae and Bremen, Sebastian}, title = {Advanced FFF of PEEK: Infill strategies and material characteristics for rapid tooling}, series = {Polymers}, volume = {2023}, journal = {Polymers}, number = {15}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/polym15214293}, pages = {Artikel 4293}, year = {2023}, abstract = {Traditional vulcanization mold manufacturing is complex, costly, and under pressure due to shorter product lifecycles and diverse variations. Additive manufacturing using Fused Filament Fabrication and high-performance polymers like PEEK offer a promising future in this industry. This study assesses the compressive strength of various infill structures (honeycomb, grid, triangle, cubic, and gyroid) when considering two distinct build directions (Z, XY) to enhance PEEK's economic and resource efficiency in rapid tooling. A comparison with PETG samples shows the behavior of the infill strategies. Additionally, a proof of concept illustrates the application of a PEEK mold in vulcanization. A peak compressive strength of 135.6 MPa was attained in specimens that were 100\% solid and subjected to thermal post-treatment. This corresponds to a 20\% strength improvement in the Z direction. In terms of time and mechanical properties, the anisotropic grid and isotropic cubic infill have emerged for use in rapid tooling. Furthermore, the study highlights that reducing the layer thickness from 0.15 mm to 0.1 mm can result in a 15\% strength increase. The study unveils the successful utilization of a room-temperature FFF-printed PEEK mold in vulcanization injection molding. The parameters and infill strategies identified in this research enable the resource-efficient FFF printing of PEEK without compromising its strength properties. Using PEEK in rapid tooling allows a cost reduction of up to 70\% in tool production.}, language = {en} } @article{LuftLuftArntz2023, author = {Luft, Angela and Luft, Nils and Arntz, Kristian}, title = {A basic description logic for service-oriented architecture in factory planning and operational control in the age of industry 4.0}, series = {Applied Sciences}, volume = {2023}, journal = {Applied Sciences}, number = {13}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app13137610}, pages = {23 Seiten}, year = {2023}, abstract = {Manufacturing companies across multiple industries face an increasingly dynamic and unpredictable environment. This development can be seen on both the market and supply side. To respond to these challenges, manufacturing companies must implement smart manufacturing systems and become more flexible and agile. The flexibility in operational planning regarding the scheduling and sequencing of customer orders needs to be increased and new structures must be implemented in manufacturing systems' fundamental design as they constitute much of the operational flexibility available. To this end, smart and more flexible solutions for production planning and control (PPC) are developed. However, scheduling or sequencing is often only considered isolated in a predefined stable environment. Moreover, their orientation on the fundamental logic of the existing IT solutions and their applicability in a dynamic environment is limited. This paper presents a conceptual model for a task-based description logic that can be applied to factory planning, technology planning, and operational control. By using service-oriented architectures, the goal is to generate smart manufacturing systems. The logic is designed to allow for easy and automated maintenance. It is compatible with the existing resource and process allocation logic across operational and strategic factory and production planning.}, language = {en} } @article{Raatschen1987, author = {Raatschen, Hans-J{\"u}rgen}, title = {Fokussierung von Spannungswellen in einer krummlinig berandeten Scheibe}, series = {ZAMM : Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, volume = {67}, journal = {ZAMM : Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1521-4001}, doi = {10.1002/zamm.19870670406}, pages = {T230 -- T231}, year = {1987}, language = {de} } @article{LeidingerNoistenWollert2012, author = {Leidinger, Rafael and Noisten, Thomas and Wollert, J{\"o}rg}, title = {Realtime automation networks in moVing industrial environments}, series = {Journal of systemics, cybernetics and informatics}, volume = {10}, journal = {Journal of systemics, cybernetics and informatics}, number = {2}, publisher = {IIIC}, address = {Orlando}, issn = {1690-4532}, pages = {52 -- 56}, year = {2012}, abstract = {The radio-based wireless data communication has made the realization of new technical solutions possible in many fields of the automation technology (AT). For about ten years, a constant disproportionate growth of wireless technologies can be observed in the automation technology. However, it shows that especially for the AT, conventional technologies of office automation are unsuitable and/or not manageable. The employment of mobile services in the industrial automation technology has the potential of significant cost and time savings. This leads to an increased productivity in various fields of the AT, for example in the factory and process automation or in production logistics. In this paper technologies and solutions for an automation-suited supply of mobile wireless services will be introduced under the criteria of real time suitability, IT-security and service orientation. Emphasis will be put on the investigation and development of wireless convergence layers for different radio technologies, on the central provision of support services for an easy-to-use, central, backup enabled management of combined wired / wireless networks and on the study on integrability in a Profinet real-time Ethernet network.}, language = {en} } @article{ReisgenSchleserAbdurakhmanovetal.2012, author = {Reisgen, Uwe and Schleser, Markus and Abdurakhmanov, Aydemir and Gumenyuk, Andrey}, title = {Measuring of plasma properties induced by non-vacuum electron beam welding}, series = {Physics of plasma}, volume = {19}, journal = {Physics of plasma}, number = {1}, publisher = {AIP Publishing}, address = {Melville, NY}, issn = {1089-7674 (E-Journal); 1070-664X (Print)}, doi = {10.1063/1.3675874}, year = {2012}, abstract = {Electron beam plasma measurement was realised by means of DIABEAM system invented by ISF RWTH Aachen. The Langmuir probe method is used for measurement. The relative simplicity of the method and the possibility of dispersion of high power on the probe allow its application for the investigation of high-power electron beams. The key element of the method is a rotating thin tungsten wire, which intersects the beam transversely on its axis and collects part of the current by itself. The signals, which are registered in the DIABEAM as a voltage, were taken in the form of amplitude. The conversion of the probe current into the distribution along the beam radius was realised using the Abel's method. A voltage-current characteristic was built for the beam current. The local electron density as well as the electron temperature, the floating potential and the plasma potential were measured and calculated by means of this characteristic.}, language = {en} } @article{ReisgenOlschokJakobsetal.2012, author = {Reisgen, Uwe and Olschok, Simon and Jakobs, Stefan and Schleser, Markus and Mokrov, Oleg and Rossiter, Eduardo}, title = {Laser beam submerged arc hybrid welding}, series = {Physics procedia}, volume = {39}, journal = {Physics procedia}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1875-3892}, doi = {10.1016/j.phpro.2012.10.016}, pages = {75 -- 83}, year = {2012}, abstract = {The laser beam-submerged arc hybrid welding method originates from the knowledge that, with increasing penetration depth, the laser beam process has a tendency to pore formation in the lower weld regions. The coupling with the energy-efficient submerged-arc process improves degassing and reduces the tendency to pore formation. The high deposition rate of the SA process in combination with the laser beam process offers, providing the appropriate choice of weld preparation, the possibility of welding plates with a thickness larger than 20° mm in a single pass, and also of welding thicker plates with the double-sided single pass technique.}, language = {en} } @article{ScheikSchleserReisgen2012, author = {Scheik, Sven and Schleser, Markus and Reisgen, Uwe}, title = {Thermisches Direktf{\"u}gen von Metall und Kusntstoff: eine Alternative zur Klebtechnik}, series = {Adh{\"a}sion : Kleben \& Dichten}, volume = {56}, journal = {Adh{\"a}sion : Kleben \& Dichten}, number = {11}, publisher = {Springer Vieweg}, address = {Wiesbaden}, issn = {0001-8198 (E-Journal); 0001-8198 (Print)}, doi = {10.1007/s35145-012-0005-x}, pages = {36 -- 40}, year = {2012}, abstract = {Im Rahmen des Exzellenzclusters „Integrative Produktionstechnik f{\"u}r Hochlohnl{\"a}nder" der RWTHAachen University werden derzeit alternative Verfahren zur Herstellung von Metall/Kunststoff- Verbindungen untersucht. Eines davon ist das thermische Direktf{\"u}gen, das eine stoffschl{\"u}ssige Verbindung zwischen Kunststoff und Metall erm{\"o}glicht und ohne die Verwendung von Klebstoffen, Haftvermittlern oder mechanischen Verbindungshilfen auskommt.}, language = {de} } @article{BabilonWilbringTappertetal.2018, author = {Babilon, Katharina and Wilbring, Daniela and Tappert, Tim and Pfaff, Raphael and Enning, Manfred}, title = {Schienenfahrzeugtechnik hands on - FH Aachen IMechE Railway Challenge}, series = {Ingenieurspiegel}, journal = {Ingenieurspiegel}, number = {2}, publisher = {Public Verlag}, address = {Bingen}, issn = {1868-5919}, pages = {20 -- 22}, year = {2018}, language = {de} }