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  • 1
    Online Resource
    Online Resource
    Digitaler Zwilling für die automatisierte Produktion von Betonfertigteilen
    Wiley ; 2022
    In:  Bautechnik Vol. 99, No. 6 ( 2022-06), p. 463-470
    Details
    In: Bautechnik, Wiley, Vol. 99, No. 6 ( 2022-06), p. 463-470
    Abstract: Digital twin for the automated production of precast concrete elements Using precast concrete elements in construction has many advantages, such as cost and planning reliability, precision, and efficiency. In most cases, the production of precast concrete elements is not fully automated. There are many manual work steps that prevent a further increase in productivity. The basis for full automation is the use of information and communication technology. A digital twin as an integrated data model is necessary for this. This paper examines how the combination of Building Information Modeling with methods from the context of Industry 4.0, which enable largely self‐organized and decentralized production, can provide the basis for the complete automation and networking of all production steps. Based on the administration shell, which implements the digital twin in Industry 4.0, a suitable description for digital twins of precast concrete modules is being developed by developing data and interaction models for industrialized production.
    Type of Medium: Online Resource
    ISSN: 0932-8351 , 1437-0999
    URL: Issue
    URL: Article
    DOI: 10.1002/bate.v99.6
    DOI: 10.1002/bate.202200034
    RVK:
    ZG 1100
    Language: German
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2151238-3
    detail.hit.zdb_id: 240073-X
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  • 2
    Online Resource
    Online Resource
    Tunable twin-guide (TTG) laser diodes with metal-clad ridge-waveguide (MCRW) structure for coherent optical communications
    Wiley ; 1992
    In:  European Transactions on Telecommunications Vol. 3, No. 5 ( 1992-09), p. 517-522
    Details
    In: European Transactions on Telecommunications, Wiley, Vol. 3, No. 5 ( 1992-09), p. 517-522
    Type of Medium: Online Resource
    ISSN: 1124-318X , 1541-8251
    URL: Issue
    URL: Article
    DOI: 10.1002/ett.v3:5
    DOI: 10.1002/ett.4460030512
    RVK:
    ZG 1100
    Language: English
    Publisher: Wiley
    Publication Date: 1992
    detail.hit.zdb_id: 2108576-6
    detail.hit.zdb_id: 2652250-0
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  • 3
    Online Resource
    Online Resource
    Werkstoffverhalten einer TRIP/TWIP-fähigen CrMnNi-Stahlgusslegierung bis zu hohen Dehnraten*
    Walter de Gruyter GmbH ; 2010
    In:  Materials Testing Vol. 52, No. 9 ( 2010-09-01), p. 588-595
    Details
    In: Materials Testing, Walter de Gruyter GmbH, Vol. 52, No. 9 ( 2010-09-01), p. 588-595
    Abstract: Das Fließspannungsverhalten einer hochlegierten metastabilen Stahlgusslegierung wurde in einem weiten Bereich der Dehnrate (4·10 −4 s −1 bis 2200 s −1 ) unter Zug- und Druckbeanspruchung untersucht. Dabei wurde ein ausgeprägter TRIP(TRansformation Induced Plasticity)-Effekt der austenitischen Legierung auf CrMnNi-Basis beobachtet, welcher zu hohen Festigkeiten und exzellenter Verformbarkeit führt. Bei Temperaturen oberhalb von 60°C bis 100°C zeigte sich zusätzlich eine mechanische Zwillingsbildung (TWIP- Effekt). Ein besonderes Augenmerk lag auf der Untersuchung der durch die mechanische Beanspruchung hervorgerufenen Mikrostrukturentwicklung. Es wurde festgestellt, dass erhöhte Beanspruchungsgeschwindigkeiten wesentlich das Werkstoffverhalten der untersuchten Legierungen beeinflussen. Mit steigender Dehnrate erfolgt eine Erwärmung der Probe, welche der Entstehung von α'-Martensit entgegenwirkt und so maßgeblich das Verfestigungsverhalten des Werkstoffes beeinflusst.
    Type of Medium: Online Resource
    ISSN: 2195-8572 , 0025-5300
    URL: Article
    DOI: 10.3139/120.110165
    RVK:
    ZG 1100
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2010
    detail.hit.zdb_id: 2280363-4
    detail.hit.zdb_id: 206395-5
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  • 4
    Online Resource
    Online Resource
    Produktzentrierte Steuerung biologischer Prozesse
    Vulkan-Verlag GmbH ; 2016
    In:  atp edition Vol. 58 ( 2016-06-01), p. 66-
    Details
    In: atp edition, Vulkan-Verlag GmbH, Vol. 58 ( 2016-06-01), p. 66-
    Abstract: Konventionelle Behandlungsmethoden von Herz-Kreislauf-Erkrankungen mit synthetischen Gefäßprothesen können aufgrund der eingeschränkten Hämokompatibilität und Einsatzdauer sowie einer mangelhaften biomechanischen Verträglichkeit zu Folgekomplikationen führen. Demgegenüber stellen patientenspezifische textilverstärkte biohybride Gefäßprothesen wegen ihrer hohen Biokompatibilität eine vielversprechende Behandlungsalternative dar. Um eine standardisierte und reproduzierbare Qualität der biohybriden Prothesen sicherzustellen, wird am Werkzeugmaschinenlabor WZL der RWTH Aachen in Zusammenarbeit mit dem Institut für Angewandte Medizintechnik AME der RWTH Aachen ein Anlagenkonzept zur automatisierten, produktzentrierten Herstellung von patientenspezifischen Gefäßprothesen entwickelt. Dabei stehen insbesondere die Anforderungen zur Umsetzung individueller Kultivierungsverläufe und Produktionsparameter für jede zu produzierende Prothese im Vordergrund. Durch die Integration des biologischen Herstellungsprozesses, der notwendigen Aktorik und Sensorik sowie einer lokalen Steuerung auf einer standardisierten Plattform (Mini-Bioreaktor) soll der Kultivierungs- und Konditionierungsprozess einer Gefäßprothese gekapselt ablaufen können.
    Type of Medium: Online Resource
    ISSN: 2364-3137 , 2190-4111
    URL: Article
    DOI: 10.17560/atp.v58i06.570
    RVK:
    ZQ 0001
    Language: Unknown
    Publisher: Vulkan-Verlag GmbH
    Publication Date: 2016
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  • 5
    Online Resource
    Online Resource
    Vorgespannte Bauteile aus textilbewehrtem Beton
    Wiley ; 2004
    In:  Beton- und Stahlbetonbau Vol. 99, No. 6 ( 2004-06), p. 472-475
    Details
    In: Beton- und Stahlbetonbau, Wiley, Vol. 99, No. 6 ( 2004-06), p. 472-475
    Abstract: Prestressed Textile reinforced Elements The paper shows that prestressing of textile reinforcement results in a higher load bearing capacity and stiffness of a textile reinforced element. Particularities of textile reinforcement for prestressing compared to textile reinforcement for non‐prestressed elements will be described. Special requirements for textiles used for prestressing are explained, which take clamping techniques, bond behaviour and the design of prestressed textile reinforced elements into consideration. In this context, the importance of internal and external bond are discussed.
    Type of Medium: Online Resource
    ISSN: 0005-9900 , 1437-1006
    URL: Issue
    URL: Article
    DOI: 10.1002/best.v99:6
    DOI: 10.1002/best.200490119
    RVK:
    ZG 1100
    Language: English
    Publisher: Wiley
    Publication Date: 2004
    detail.hit.zdb_id: 2151239-5
    detail.hit.zdb_id: 240053-4
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  • 6
    Online Resource
    Online Resource
    Laser Diodes and Integrated Optoelectronic Circuits for Fiber Optical Applications
    Wiley ; 1993
    In:  European Transactions on Telecommunications Vol. 4, No. 6 ( 1993-11), p. 599-614
    Details
    In: European Transactions on Telecommunications, Wiley, Vol. 4, No. 6 ( 1993-11), p. 599-614
    Type of Medium: Online Resource
    ISSN: 1124-318X , 1541-8251
    URL: Issue
    URL: Article
    DOI: 10.1002/ett.v4:6
    DOI: 10.1002/ett.4460040609
    RVK:
    ZG 1100
    Language: English
    Publisher: Wiley
    Publication Date: 1993
    detail.hit.zdb_id: 2108576-6
    detail.hit.zdb_id: 2652250-0
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  • 7
    Online Resource
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    Ein neuer offener Standard für Bildrepositorien – das International Image Interoperability Framework (IIIF) im Einsatz an der Bayerischen Staatsbibliothek
    Walter de Gruyter GmbH ; 2016
    In:  ABI Technik Vol. 36, No. 2 ( 2016-7-1), p. 105-113
    Details
    In: ABI Technik, Walter de Gruyter GmbH, Vol. 36, No. 2 ( 2016-7-1), p. 105-113
    Abstract: Seit den Anfängen der Digitalisierung von Kulturgütern in den späten 1990er Jahren wurden zahlreiche spartenspezifische, meist technisch spezielle Lösungen für die Internet-Präsentation von Digitalisaten aus Archiven, Bibliotheken und Museen entwickelt. Die meisten Viewer zur Internet-Präsentation sind auf die Anforderungen einer einzigen Einrichtung beschränkt und bieten meist nur Zugang (Access) auf eine begrenzte Anzahl von lokalen, meist untereinander inkompatiblen Applikationen. Der 2011 entwickelte IIIF-Standard ist dabei, die Situation grundlegend zu ändern. IIIF definiert eine Reihe von öffentlich zugänglichen Application Programming Interfaces (APIs), um die Strukturierung, den Austausch und die Visualisierung digitaler Objekte für alle Kulturinstitutionen zu erleichtern. Zusammen mit einem IIIF-kompatiblen Betrachter wie Mirador bietet IIIF einen bisher unerreichten Grad an Interoperabilität, der es Institutionen erlaubt, ihre digitalen Inhalte in einer noch nie da gewesenen Art und Weise für Forschung und Wissenschaft zugänglich zu machen (Data Sharing). Dieser Artikel beschreibt die Möglichkeiten und Chancen des IIIF-Standards und von Mirador, einem IIIF-Viewer und Forschungstool am Beispiel der Bayerischen Staatsbibliothek. Die Bayerische Staatsbibliothek wird sukzessive die Präsentation von 1,2 Millionen digitalisierten Werken auf den IIIF-Standard umstellen.
    Type of Medium: Online Resource
    ISSN: 2191-4664 , 0720-6763
    URL: Article
    DOI: 10.1515/abitech-2016-0017
    RVK:
    ZS 0001
    RVK:
    AN 10100
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2016
    detail.hit.zdb_id: 2598795-1
    detail.hit.zdb_id: 578995-3
    SSG: 24,1
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  • 8
    Online Resource
    Online Resource
    Statische Analyse mit linear elastischen 3D‐Gebäudemodellen : Auswirkungen unterschiedlicher Modellierungsarten auf den vertikalen Lastfluss
    Wiley ; 2021
    In:  Beton- und Stahlbetonbau Vol. 116, No. 5 ( 2021-05), p. 360-369
    Details
    In: Beton- und Stahlbetonbau, Wiley, Vol. 116, No. 5 ( 2021-05), p. 360-369
    Abstract: Static analysis with linear elastic 3D building models – Effects of different modelling types on the vertical load distribution 3D building models are nowadays a widely used tool for structural analysis in practice. However, the determined load distribution using 3D building models sometimes differs significantly from the results of a conventional calculation with extracted 2D submodels. The background is that the results in a 3D calculation model are obtained with respect to the deformation compatibility in the entire structure, whereas the associated redistribution of stresses is neglected in a calculation with extracted 2D submodels. Using the example of a representative 15‐storey reinforced concrete high‐rise building with flat slabs and bracing core, different modelling approaches were therefore investigated in order to develop general recommendations for the practical application of holistic 3D building models. This article first shows to what extent the results of a linear‐elastic analysis with a 3D building model differ from those of a calculation with extracted 2D submodels. In addition, the influences from the construction progress, the soil‐structure interaction, the connection stiffnesses and the stiffness reduction of the slabs through bending crack formation are presented. Further influences on the load distribution in a holistic 3D building model as a result of the time‐dependent deformation behavior of concrete (viscoelastic consideration) are discussed in a further contribution of the authors. All in all, the various influences result in significant changes in the vertical load distribution, which are to be regarded in the practical application of 3D building models.
    Type of Medium: Online Resource
    ISSN: 0005-9900 , 1437-1006
    URL: Issue
    URL: Article
    DOI: 10.1002/best.v116.5
    DOI: 10.1002/best.202000055
    RVK:
    ZG 1100
    Language: German
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2151239-5
    detail.hit.zdb_id: 240053-4
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  • 9
    Online Resource
    Online Resource
    Parametric Model Order Reduction of Port-Hamiltonian Systems by Matrix Interpolation
    Walter de Gruyter GmbH ; 2014
    In:  at - Automatisierungstechnik Vol. 62, No. 9 ( 2014-9-28), p. 619-628
    Details
    In: at - Automatisierungstechnik, Walter de Gruyter GmbH, Vol. 62, No. 9 ( 2014-9-28), p. 619-628
    Abstract: In this paper, parametric model order reduction of linear time-invariant systems by matrix interpolation is adapted to large-scale systems in port-Hamiltonian form. A new weighted matrix interpolation of locally reduced models is introduced in order to preserve the port-Hamiltonian structure, which guarantees the passivity and stability of the interpolated system. The performance of the new method is demonstrated by technical examples.
    Type of Medium: Online Resource
    ISSN: 0178-2312 , 2196-677X
    URL: Article
    DOI: 10.1515/auto-2013-1072
    RVK:
    ZG 1100
    RVK:
    SA 7620
    RVK:
    SQ 1705
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2014
    detail.hit.zdb_id: 629186-7
    detail.hit.zdb_id: 2027287-X
    SSG: 15,3
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  • 10
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    Online Resource
    Statische Analyse mit 3D‐Gebäudemodellen unter Berücksichtigung zeitabhängiger Verformungen in den vertikalen Bauteilen : Auswirkungen unterschiedlicher Modellierungsarten auf den vertikalen Lastfluss
    Wiley ; 2021
    In:  Beton- und Stahlbetonbau Vol. 116, No. 6 ( 2021-06), p. 419-430
    Details
    In: Beton- und Stahlbetonbau, Wiley, Vol. 116, No. 6 ( 2021-06), p. 419-430
    Abstract: Static analysis with 3D building models considering the time‐dependent deformations in vertical members – Effects of different modelling types on the vertical load distribution The static analysis of the load flow in structures by means of 3D building models is widely used in practice – but not without controversy. Usually, linear elastic analysis models are created, although they could show significantly different results compared to a conventional analysis using extracted 2D submodels. These differences were discussed in a previous article by the authors. The present article follows on from this and now deals with the influence of the time‐dependent deformation behaviour of concrete in the vertical elements on the calculation results of 3D building models. Of course, the time‐dependent deformation behaviour of concrete occurs also in the horizontal elements and affects the calculation results additionally. However, these effects were conceivably excluded and will be addressed in future publications of the authors. The investigations are carried out on the 15‐storey representative reinforced concrete high‐rise building. This building was already the basis of the linear elastic investigations in the previous article. In detail, the analysis model is now extended using time‐discrete material models, and reinforcement is added in order to represent the effects of the “internal” restraint. Overall, the time‐dependent deformation behaviour of concrete causes significant differences in the force distribution compared to a linear elastic analysis. Due to the high complexity of these time‐discrete analyses, an engineering approach for practical application was developed and tested for its suitability.
    Type of Medium: Online Resource
    ISSN: 0005-9900 , 1437-1006
    URL: Issue
    URL: Article
    DOI: 10.1002/best.v116.6
    DOI: 10.1002/best.202100017
    RVK:
    ZG 1100
    Language: German
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2151239-5
    detail.hit.zdb_id: 240053-4
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