Part of a Book
Refine
Year of publication
Institute
- Fachbereich Bauingenieurwesen (86)
- Fachbereich Energietechnik (83)
- Fachbereich Wirtschaftswissenschaften (72)
- Fachbereich Elektrotechnik und Informationstechnik (64)
- Fachbereich Medizintechnik und Technomathematik (62)
- Fachbereich Architektur (48)
- Fachbereich Luft- und Raumfahrttechnik (43)
- Fachbereich Gestaltung (40)
- IfB - Institut für Bioengineering (37)
- Fachbereich Maschinenbau und Mechatronik (32)
Has Fulltext
- no (567) (remove)
Document Type
- Part of a Book (567) (remove)
Keywords
- Aktionskunst (4)
- Papierkunst (4)
- Wind Tunnel (3)
- Autonomous mobile robots (2)
- Central receiver power plant (2)
- Central receiver system (2)
- Concentrated solar collector (2)
- Concentrated systems (2)
- Datenschutz (2)
- Datenschutzrecht (2)
- Digitale Transformation (2)
- EU-Datenschutzgrundverordnung (2)
- Engineering optimization (2)
- Flight Test (2)
- Gas turbine (2)
- Geschichte (2)
- IT-Sicherheit (2)
- Industry 4.0 (2)
- Interaktive Kunst (2)
- Internationales Recht / Europarecht (2)
- Kommunikationsguerrilla (2)
- Multi-robot systems (2)
- Pitching Moment (2)
- Prozessautomatisierung (2)
- Seismic design (2)
- Smart factory (2)
- Solar concentration (2)
- Stadtgestaltung (2)
- Streetart (2)
- Wave Drag (2)
- robotic process automation (2)
- Öffentlicher Raum (2)
- 20 fossil-fueled power plants (1)
- 3D printing (1)
- Acceptance tests (1)
- Additive manufacturing (1)
- Advanced driver assistance systems (ADAS/AD) (1)
- Aerodynamic Drag (1)
- Analytics (1)
- BEV (1)
- Best practice sharing (1)
- Betroffenenrechte (1)
- Bioeconomy (1)
- Bioethanol (1)
- Biomolecular logic gate (1)
- Biorefinery (1)
- Biorefinery definitions (1)
- Bladder (1)
- Bone sawing (1)
- Bundesdatenschutzgesetz (2017) (1)
- Business Models (1)
- Calorimetric gas sensor (1)
- Carsharing (1)
- Certification Rule (1)
- Change culture (1)
- Change management (1)
- Charging stations (1)
- Chemical imaging (1)
- Chimeric liver-humanized mice (1)
- Cloud Computing (1)
- Coat protein (1)
- Coefficient of ocular rigidity (1)
- Cognitive assistance system (1)
- Collaborative robot (1)
- Collagen fibrils (1)
- Components (1)
- Concentrating solar power (1)
- Connective tissues (1)
- Controller Parameter (1)
- Corneo-scleral shell (1)
- Cross-platform (1)
- Customer Experience Management (1)
- Customer Journeys (1)
- Cyber-physical systems (1)
- Cybersecurity (1)
- Cybersicherheit (1)
- DNA (1)
- Datenschutzfolgenabschätzung (1)
- Datenschutzgrundverordnung (1)
- Decentral (1)
- Design examples (1)
- Designstudium (1)
- Differential tonometry (1)
- Digital leadership (1)
- Digital manufacturing (1)
- Digitalisierung (1)
- Diversity management (1)
- Drag Reduction (1)
- Drug distribution (1)
- Drug metabolism (1)
- Dry surfaces (1)
- E-carsharing (1)
- E-mobility (1)
- EU-DS-GVO (1)
- EU-DSGVO (1)
- EUDSGVO (1)
- Electrical vehicle (1)
- Energy efficiency (1)
- Engine Efficiency (1)
- Entstaubung (1)
- Enzyme biosensor (1)
- Enzyme nanocarrier (1)
- Epistemische Neugier (1)
- Eurocode 8 (1)
- Evacuation Rule (1)
- Evaluation (1)
- Experteninterviews (1)
- Extracellular matrix (ECM) (1)
- Eyeball (1)
- FGF23 (1)
- Fake (1)
- Field-effect device (1)
- Field-effect sensor (1)
- Filter (Stofftrennung) (1)
- Filtration (1)
- Forschung (1)
- Forschungsinformationssystem (1)
- Forschungsprozess (1)
- Fresnel collector (1)
- Fresnel power plant (1)
- Friction Drag (1)
- Fully connected car (1)
- Gamification (1)
- Gearbox (1)
- Geschäftsprozessmanagement (1)
- Global optimization (1)
- Glucose biosensor (1)
- Glucose oxidase (1)
- Gold nanoparticle (1)
- Growth modelling (1)
- Gust wind response (1)
- Hacking (1)
- Higher education (1)
- Hochschule (1)
- Human-Robot interaction (1)
- Human-centered work design (1)
- Human-robot collaboration (1)
- Hybridization (1)
- Hydraulic structures (1)
- Hydrogen peroxide (1)
- ISO 26262 (1)
- IT Products (1)
- IT-Marketing (1)
- Ice melting probe (1)
- Ice penetration (1)
- Icy moons (1)
- Identitätsmanagement (1)
- Illustration (1)
- Inclusive work climate (1)
- Inductive charging (1)
- Industrial units (1)
- Information and communication technology (1)
- Informationsgetriebene Geschäftsmodelle (1)
- Informationssicherheit (1)
- Informationssicherheitsmanagement (1)
- Integrated mobility (1)
- Intelligentes Parken (1)
- Interactive process mining (1)
- Internet der Dinge (1)
- Introduction (1)
- Kinetische Kunst (1)
- Klotho (1)
- Knockout mice (1)
- Kommerzielle Interaktionen (1)
- Konsumgesellschaft (1)
- Konsumkritik (1)
- Kreativität (1)
- Künstlerische Intervention (1)
- Künstlerisches Handeln (1)
- Leaderboard (1)
- Leading Edge Vortex (1)
- Lean thinking (1)
- Level Control System (1)
- Lichtkunst (1)
- Light-addressable potentiometric sensor (1)
- Lignocellulose feedstook (1)
- Limit analysis (1)
- MINLP (1)
- Mach Number (1)
- Machine learning (1)
- Mack, Heinz (1)
- Mars (1)
- Mechanical (1)
- Mechanical simulation (1)
- Mechanical stability (1)
- Meinungsäußerung (1)
- Methodology (1)
- Microbial adhesion (1)
- Mixed-Methods (1)
- Mixed-Methods Research (1)
- Mixed-integer nonlinear black-box optimization (1)
- Mixed-integer nonlinear problem (1)
- Mobile web (1)
- Mobility management (1)
- Monetarisierung (1)
- Multi-criteria optimization (1)
- Multi-sensor system (1)
- Multidisciplinary Design Optimization (1)
- Multimode failure (1)
- Muscle fibers (1)
- Network (1)
- Netzkunst (1)
- Niacin (1)
- Noise Exposure (1)
- Non-linear optimization (1)
- Objective data (1)
- Ocean worlds (1)
- On-site (1)
- Open channels (1)
- Optical and thermal analysis (1)
- Optimal Closed Loop (1)
- Optimal Topology (1)
- Optimization (1)
- Organizational culture (1)
- PTH (1)
- PWA (1)
- Paper recycling (1)
- Parabolized Stability Equation (1)
- Parasitäre Strategie (1)
- Parasitäre Strategien (1)
- Passenger compartment (1)
- Passive stretching (1)
- Path planning (1)
- Pelvic floor dysfunction (1)
- Pelvic muscle (1)
- Perception (1)
- Performance measurement (1)
- Phosphate (1)
- Physical modeling (1)
- Plant efficiency (1)
- Politische Kunst (1)
- Potentiometry (1)
- Power conversion systems (1)
- Powertrain (1)
- Pre-treatment (1)
- Pressure-volume relationship (1)
- Privacy (1)
- Process engineering (1)
- Process schemes (1)
- Product Management (1)
- Product family optimization (1)
- Progressive Web App (1)
- Projektbeispiele (1)
- Prozessagilität (1)
- Prozessauswahl (1)
- Prozessverbesserung (1)
- Psychological concepts (1)
- Pushover analysis (1)
- Qualitative Wertschöpfungsanalyse (1)
- Quantitative research (1)
- RWTH Aachen University (1)
- Rapid manufacturing (1)
- Rapid prototyping (1)
- Raumerfahrung (1)
- Reconstruction (1)
- Reliability analysis (1)
- Renewable resources (1)
- Response spectrum (1)
- Responsibility (1)
- Riboflavin (1)
- RoboCup (1)
- Robotic Process Automation (1)
- Robotic process automation (1)
- Safety concept (1)
- Safety of the intended functionality (SOTIF) (1)
- Safety-critical systems validation (1)
- Sampling methods (1)
- Selbstwirksamkeit (1)
- Selektionskriterien (1)
- Serviceintegration (1)
- Severe Accident (1)
- Shakedown analysis (1)
- Silos (1)
- Similitude (1)
- Software development (1)
- Software testing (1)
- Softwareroboter (1)
- Solar dish (1)
- Sonic Boom (1)
- Specific Fuel Consumption (1)
- Spectral analysis (1)
- Stadtentwicklung (1)
- Staubfilter (1)
- Strategic Business Planning (1)
- Strickmuster (1)
- Students (1)
- Studienarbeit (1)
- Studieneingangsphase (1)
- Studierfähigkeit (1)
- Supersonic Flow (1)
- Supersonic Wind Tunnel (1)
- Surface microorganisms (1)
- Swabbing (1)
- Tanks (1)
- Tapered ends (1)
- Technical Operation Research (1)
- Technische Schutzmaßnahmen (1)
- Technology Challenge (1)
- Telekommunikation-Telemedien-Datenschutzgesetz (1)
- Thermal Fatigue Testing (1)
- Thermal comfort (1)
- Thermal management (1)
- Thiamine (1)
- Tobacco mosaic virus (TMV) (1)
- Toxicology (1)
- Transition (1)
- Typologien (1)
- Urban areas (1)
- Urbanismus (1)
- Ureter (1)
- Variable Geometry (1)
- Verweigerung (1)
- Vitamin A (1)
- Vitamin B (1)
- Vitamin D (1)
- WLTP (1)
- Water (1)
- Wind turbulence (1)
- Wirkungsforschung (1)
- Workspace monitoring (1)
- applications (1)
- architectural education (1)
- artificial intelligence (1)
- attitude dynamics (1)
- bullying (1)
- business process automation (1)
- ceramics (1)
- commercial offthe- shelf solutions (1)
- culpability (1)
- currriculum (1)
- design research (1)
- dscipline (1)
- filtration (1)
- gas flow (1)
- hot gas cleanup (1)
- hybridity (1)
- intrinsische Motivation (1)
- keramischer Werkstoff (1)
- lessons learned (1)
- liability (1)
- management (1)
- orbit control (1)
- orbital dynamics (1)
- policy recommendations (1)
- profession (1)
- recommendations for actions (1)
- research by design (1)
- research framework (1)
- research in architecture (1)
- sailcraft (1)
- software evaluation (1)
- software selection (1)
- solar sail (1)
- technology (1)
- the University of Sheffield (1)
- training simulator (1)
- virtual reality (1)
Einleitung vor § 1297
(2014)
Vorbemerkung vor § 1297
(2014)
Vorbemerkung vor § 1353
(2014)
Grenzenlose Liebe
(2008)
Betrifft Design : von historischen Zukunftsperspektiven zu gegenwärtigen Vergangenheitssehnsüchten
(2019)
Modell
(2008)
Skizze
(2008)
Styling
(2008)
For a wide acceptance of E-Mobility, a well-developed charging infrastructure is needed. Conductive charging stations, which are today’s state of the art, are of limited suitability for urbanised areas, since they cause a significant diversification in townscape. Furthermore, they might be destroyed by vandalism. Besides for those urbanistic reasons, inductive charging stations are a much more comfortable alternative, especially in urbanised areas. The usage of conductive charging stations requires more or less bulky charging cables. The handling of those standardised charging cables, especially during poor weather conditions, might cause inconvenience, such as dirty clothing etc. Wireless charging does not require visible and vandalism vulnerable charge sticks. No wired connection between charging station and vehicle is needed, which enable the placement below the surface of parking spaces or other points of interest. Inductive charging seems to be the optimal alternative for E-Mobility, as a high power transfer can be realised with a manageable technical and financial effort. For a well-accepted and working public charging infrastructure in urbanised areas it is essential that the infrastructure fits the vehicles’ needs. Hence, a well-adjusted standardisation of the charging infrastructure is essential. This is carried out by several IEC (International Electrotechnical Commission) and national standardisation committees. To ensure an optimised technical solution for future’s inductive charging infrastructures, several field tests had been carried out and are planned in near future.
Twee Kanten van één Medaille
(2020)
Epilepsy
(2010)
There is a broad international discussion about rethinking engineering education in order to educate engineers to cope with future challenges, and particularly the sustainable development goals. In this context, there is a consensus about the need to shift from a mostly technical paradigm to a more holistic problem-based approach, which can address the social embeddedness of technology in society. Among the strategies suggested to address this social embeddedness, design thinking has been proposed as an essential complement to engineering precisely for this purpose. This chapter describes the requirements for integrating the design thinking approach in engineering education. We exemplify the requirements and challenges by presenting our approach based on our course experiences at RWTH Aachen University. The chapter first describes the development of our approach of integrating design thinking in engineering curricula, how we combine it with the Sustainable Development Goals (SDG) as well as the role of sustainability and social responsibility in engineering. Secondly, we present the course “Expanding Engineering Limits: Culture, Diversity, and Gender” at RWTH Aachen University. We describe the necessity to theoretically embed the method in social and cultural context, giving students the opportunity to reflect on cultural, national, or individual “engineering limits,” and to be able to overcome them using design thinking as a next step for collaborative project work. The paper will suggest that the successful implementation of design thinking as a method in engineering education needs to be framed and contextualized within Science and Technology Studies (STS).
The energy-efficiency of technical systems can be improved by a systematic design approach. Technical Operations Research (TOR) employs methods known from Operations Research to find a global optimal layout and operation strategy of technical systems. We show the practical usage of this approach by the systematic design of a decentralized water supply system for skyscrapers. All possible network options and operation strategies are modeled by a Mixed-Integer Nonlinear Program. We present the optimal system found by our approach and highlight the energy savings compared to a conventional system design.
In order to maximize the possible travel distance of battery electric vehicles with one battery charge, it is mandatory to adjust all components of the powertrain carefully to each other. While current vehicle designs mostly simplify the powertrain rigorously and use an electric motor in combination with a gearbox with only one fixed transmission ratio, the use of multi-gear systems has great potential. First, a multi-speed system is able to improve the overall energy efficiency. Secondly, it is able to reduce the maximum momentum and therefore to reduce the maximum current provided by the traction battery, which results in a longer battery lifetime. In this paper, we present a systematic way to generate multi-gear gearbox designs that—combined with a certain electric motor—lead to the most efficient fulfillment of predefined load scenarios and are at the same time robust to uncertainties in the load. Therefore, we model the electric motor and the gearbox within a Mixed-Integer Nonlinear Program, and optimize the efficiency of the mechanical parts of the powertrain. By combining this mathematical optimization program with an unsupervised machine learning algorithm, we are able to derive global-optimal gearbox designs for practically relevant momentum and speed requirements.
Neben dem durch Unfälle und Krankheiten entstehenden menschlichen Leids und der daraus resultierenden moralischen Verpflichtung, sich und seine Mitmenschen vor Schaden zu bewahren, ist der Arbeits- und Gesundheitsschutz auch ein Gebot wirtschaftlichen Handelns, da Arbeitsunfälle und Berufskrankheiten Ausfallzeiten und Kosten verursachen. So gehören Arbeits- und Gesundheitsschutz zu den wichtigen Aufgaben eines Unternehmens.
Arbeitssicherheit
(2019)
Risiken des Handels
(2009)
Stahlbau
(2009)
Stahlbau
(2005)
Stahlbau
(2012)
Arbeitswissenschaft
(2001)
Unter Arbeit wird das Tätigsein des Menschen verstanden, bei dem dieser mit anderen Menschen und (technischen) Hilfsmitteln in Interaktion tritt, um unter wirtschaftlichen Zielsetzungen Güter und Dienstleistungen zu erstellen (Luczak, 1998a). Arbeit dient direkt oder indirekt der Erhaltung der eigenen Existenz und der Existenz der Gesellschaft. Arbeit ist deshalb eine besondere Form des Tätigseins neben anderen wie Spiel, Sport, Lemen usw.
A technology reference study for a solar polar mission is presented. The study uses novel analytical methods to quantify the mission design space including the required sail performance to achieve a given solar polar observation angle within a given timeframe and thus to derive mass allocations for the remaining spacecraft sub-systems, that is excluding the solar sail sub-system. A parametric, bottom-up, system mass budget analysis is then used to establish the required sail technology to deliver a range of science payloads, and to establish where such payloads can be delivered to within a given timeframe. It is found that a solar polar mission requires a solar sail of side-length 100–125 m to deliver a ‘sufficient value’ minimum science payload, and that a 2.5 μm sail film substrate is typically required, however the design is much less sensitive to the boom specific mass.
Der Verein Deutscher Ingenieure e.V. (VDI) ist ein gemeinnütziger, wirtschaftlich und politisch unabhängiger, technisch-wissenschaftlicher Verein von Ingenieuren und Naturwissenschaftlern. Mit über 137 000 persönlich zugeordneten Mitgliedern ist er eine der größten Ingenieur-Vereinigungen Europas und gilt in Deutschland als führender Sprecher der Technik und der Ingenieure. 1856 gegründet, hat er viele für die Technik wesentliche Entwicklungen in Gang gesetzt, so im Bereich der technischen Überwachung, der technischen Regelsetzung und Normung, der Arbeitsstudien, im gewerblichen Rechtsschutz und im Patentwesen. Seit seiner Gründung sieht es der VDI als seine Aufgabe, "das Zusammenwirken aller geistiger Kräfte der Technik im Bewusstsein ethischer Verantwortung zu fördern" und die Lebensmöglichkeiten aller Menschen durch Entwicklung und sinnvoller Anwendung technischer Mittel zu verbessern.
Biocomposite Materials Based on Carbonized Rice Husk in Biomedicine and Environmental Applications
(2020)
This chapter describes the prospects for biomedical and environmental engineering applications of heterogeneous materials based on nanostructured carbonized rice husk. Efforts in engineering enzymology are focused on the following directions: development and optimization of immobilization methods leading to novel biotechnological and biomedical applications; construction of biocomposite materials based on individual enzymes, multi-enzyme complexes and whole cells, targeted on realization of specific industrial processes. Molecular biological and biochemical studies on cell adhesion focus predominantly on identification, isolation and structural analysis of attachment-responsible biological molecules and their genetic determinants. The chapter provides a short overview of applications of the biocomposite materials based of nanostructured carbonized adsorbents. It emphasizes that further studies and better understanding of the interactions between CNS and microbial cells are necessary. The future use of living cells as biocatalysts, especially in the environmental field, needs more systematic investigations of the microbial adsorption phenomenon.
Betriebsorganisation
(2019)
Betriebsorganisation
(2016)
Das Kapitel behandelt, ausgehend von Begriffen und Aufgaben der Betriebsorganisation, die Aufbau- und Ablauforganisation der Bauunternehmung sowie die Gestaltung einer Projekt-organisation. Es folgt eine Darstellung der Managementsysteme für Qualität, Umwelt und Arbeitsschutz, die sich zunehmend als sog. integrierte Managementsysteme (IMS) auch in Bauunternehmen etablieren. Grundlagen des Personalmanagements und des betrieblichen Rechnungswesens, die für eine(n) Baubetriebler(in) relevant sein können, ergänzen das Kap. Betriebsorganisation. Den Abschluss bilden Hinweise zum Berichtswesen der Baustelle.
Größen, Formeln, Bemessung
(2016)
Das Kapitel 1 vermittelt eine Übersicht für den schnellen Gebrauch von Größen, Einheiten und Zeichen. Es folgt die Darstellung wichtiger Grundlagen der Mathematik, Lastannahmen und einfacher statischer Systeme. Schließlich werden Hinweise zu charakteristischen Festigkeiten und Tragfähigkeitsnachweisen für Berechnungen im Mauerwerk, Holz- und Stahlbau sowie Stahlbetonbau gegeben. Für eine weitere Vertiefung des Themas empfiehlt sich der Wendehorst Bautechnische Zahlentafel
Innovation und Kommunikation
(2013)
A technology reference study for a displaced Lagrange point space weather mission is presented. The mission builds on previous concepts, but adopts a strong micro-spacecraft philosophy to deliver a low mass platform and payload which can be accommodated on the DLR/ESA Gossamer-3 technology demonstration mission. A direct escape from Geostationary Transfer Orbit is assumed with the sail deployed after the escape burn. The use of a miniaturized, low mass platform and payload then allows the Gossamer-3 solar sail to potentially double the warning time of space weather events. The mission profile and mass budgets will be presented to achieve these ambitious goals.
Regenerative Energieträger
(1998)
Regenerative Energiequellen
(1994)
Durch die Einführung von Building Information Modeling (BIM) sowohl projektspezifisch als auch in ganze Unternehmungen hat die Baubranche einen weitreichenden Veränderungsprozess angestoßen.
Building Information Modeling kann als eine Methode angesehen werden, um die Informationsasymmetrien zwischen den Projektbeteiligten so gering wie möglich zu halten.
In the preceeding chapters on “Son of Concorde, a Technology Challenge” and “Aerodynamic Multipoint Design Challenge” it was explained, that a well balanced contribution of new technologies in all major disciplines is required for realisation of a new Supersonic Commercial Transport (SCT). One of these technologies - usually one of the most important for aircraft-is aerodynamics. Here, the required “pure” aerodynamic technologies are specified in more detail, according to our present knowledge. Increasing insight into the problems may change the balance of importance of the individual technologies and may require some more contributions. We must never confine our knowledge to the knowledge base of an expert at a given time, but must stay open for new insights.
Since certification of Concorde new certification standards were introduced including many new regulations to improve flight safety. Most of these standards are to prevent severe accidents in the future which happened in the past (here: after Concorde’s certification). A new SCT has to fulfill these standards, although Concorde had none of these accidents. But accidents - although they sometimes occurred only for a specific aircraft type - have to be avoided for any (new) aircraft. Because of existing aircraft without typical accident types having demonstrated their reliability, they are allowed to go on based on their old certification; although sometimes new rules prevent accident types which are not connected to specific aircraft types - like e.g. evacuation rules. Anyway, Concorde is allowed to fly based on its old certification, and hopefully in the future will fly as safely as in the past. But a new SCT has to fulfill updated rules like any other aircraft, and it has to be “just another aircraft” [75].
Supersonic laminar flow
(1997)
Supersonic transports are very drag sensitive. Technology to reduce drag by application of laminar flow, therefore, will be important; it is a prerequisite to achieve very long range capability. In earlier studies it was assumed that SCTs would only become possible by application of laminar flow [376]. But today, we request an SCT to be viable without application of laminar flow in order to maintain its competitiveness when laminar flow becomes available for subsonic and supersonic transports. By reducing fuel burned, laminar flow drag reduction reduces size and weight of the aircraft, or increases range capability -whereas otherwise size and weight would grow towards infinity. Transition mechanisms from laminar to turbulent state of the boundary layer flow (ALT, CFI, TSI) function as for transonic transports, but at more severe conditions: higher sweep angles, cooled surfaces; higher mode instabilities (HMI) must at least be taken into account, although they may not become important below Mach 3. Hitherto there is a worldwide lack of ground test facilities to investigate TSI at the expected cruise Mach numbers between 1.6 and 2.4; in Stuttgart, Germany one such facility -a Ludwieg tube- is still in the validation phase. A quiet Ludwieg tunnel could be a favourable choice for Europe. But it will require a new approach in designing aircraft which includes improved theoretical predictions, usage of classical wind tunnels for turbulent flow and flight tests for validation.
Concorde (Figure 9) is the only supersonic airliner which has been introduced into regular passenger service. It is still in service at British Airways and Air France without any flight accidents, and probably will stay in service for at least for ten more years.
In the chapter “Son of Concorde, a Technology Challenge” one of the new challenges for a Supersonic Commercial Transport (SCT) is multi-point design for the four main design points:
- supersonic cruise
- transonic cruise
- take-off and landing
- transonic acceleration.
The technology programme “Reduction of aerodynamic drag (RaWid)” for high speed aerodynamics at Daimler-Benz Aerospace Airbus is sponsered by the German ministry for education, research and technology since July 1, 1995. Connected to this industrial programme are the cooperation programmes “MEGAFLOW” under leadership of the DLR and “Transition” by the DFG, and several contributions by DLR and universities.
The programme is oriented towards technologies required for a MEGALINER which gains momentum by the ambitious plans for a new large Airbus A3XX.
In the first year new technological steps were undertaken in theory, design and experiment. Some critical steps were verified by wing designs checked in wind tunnel tests.
Today the most accurate and cost effective industrial codes used in aircraft design are based on the full potential equation coupled with boundary layer equations. However, these are not capable to solve complicated three-dimensional problems of vortical flows and shocks. On the other hand Euler and Navier-Stokes codes are too expensive and not accurate enough for design purposes, especially in regard of drag and interference prediction. The reasons for these deficiencies are investigated and a way to overcome them by future developments is demonstrated.
Wind loads have great impact on many engineering structures. Wind storms often cause irreparable damage to the buildings which are exposed to it. Along with the earthquakes, wind represents one of the most common environmental load on structures and is relevant for limit state design. Modern wind codes indicate calculation procedures allowing engineers to deal with structural systems, which are susceptible to conduct wind-excited oscillations. In the codes approximate formulas for wind buffeting are specified which relate the dynamic problem to rather abstract parameter functions. The complete theory behind is not visible in order to simplify the applicability of the procedures. This chapter derives the underlying basic relations of the spectral method for wind buffeting and explains the main important applications of it in order to elucidate part of the theoretical background of computations after the new codes. The stochasticity of the wind processes is addressed, and the analysis of analytical as well as measurement based power spectra is outlined. Short MATLAB codes are added to the Appendix 3 which carry out the computation of a single sided auto-spectrum from a statistically stationary, discrete stochastic process. Two examples are presented.
Am Lehr- und Forschungsgebiet Holzbau der Fachhochschule Aachen wurden im Rahmen des Forschungsvorhabens „Nachhaltige Standardbrücken in Holzbauweise“ Standardtypen für Geh- und Radwegbrücken entwickelt. Die Brücken sind durch konsequente Umsetzungen von Maßnahmen des konstruktiven Holzschutzes für eine Nutzung von mehr als 80~Jahren konzipiert. Innovative Lösungen für Bauteile und Anschlüsse sowie Materialalternativen im Bereich des Belages und der Geländer ermöglichen eine wartungsarme Konstruktion und tragen somit zur Wirtschaftlichkeit und Nachhaltigkeit bei.
Um den Einsatz der entwickelten Standardbrückentypen in der Praxis zu erleichtern, wurden Leistungsverzeichnisse, Musterstatiken, Musterzeichnungen und umfangreiche Detailkataloge als Unterstützung für Planer und Bauherren erstellt. Damit die Randbedingungen für eine lange Lebensdauer während der Nutzung der Brücke erhalten bleiben, wurden Leitfäden für die Pflege und Wartung sowie für die Brückenprüfung erarbeitet. Der Beitrag gibt Einblicke in das Forschungsvorhaben und seine Resultate.