DUETCOM
The aim of the project is to investigate innovative digital X-Ray technologies for the inspection of light weight components used in aerospace industry, which are essential for green aircraft development. The application range includes advanced light-weight metallic, fibre composite materials (CFRP and GFRP) and metal laminate, and considers parts of various size and shape. The increasing shape complexity of these components - due to the fact that structures integration is easier with composites - makes sometimes the control by conventional NDT tool insufficient or problematic. The idea of the project is to develop and validate new investigation methods, based on advanced X-ray technologies, and optimized for the examination of aeronautic parts.
This will be explored through the development of innovative X-ray techniques, using digital radiography. Different X-ray imaging promising techniques will be investigated, around two main aspects: advanced tomographic techniques, and dual-energy approaches. Theses techniques allow to get volumetric and material specific information, thus to control the internal or subsurface structures of the part. Optimization of the techniques will be considered for different materials and geometries. This technological advance will take benefit of the new opportunities and performances offered by digital detector arrays, eventually used in a dual-energy or spectroscopic mode.
The aim is to develop a technology basis which could allow a reliable examination of complex shape aeronautic parts made of composite materials. The project will provide new tools and methodologies for such inspection with high rate and at low cost. The outcome of the project will consist in the definition of inspection protocols, the specification of convenient hardware, corresponding tools for calibration steps, and innovative tools for data processing, including reconstruction algorithms, dual-energy processing, and 3D fast visualization.
For targeted components, an experimental full scale set-up will assure the validation and the demonstration of exploitation potential. This demonstrator will not be interfaced to a continuous production line, but will allow an industrial validation on various true defective parts. By the combination of different innovative X-ray techniques, and the optimization for aeronautical parts, this demonstrator will illustrate a breakthrough compared to existing inspection systems.
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ACSCERT
With air travel predicted to grow rapidly, the aeronautics industry will be tasked with developing aircraft that deliver ever increasing levels of performance, efficiency and comfort while also addressing the requirement to reduce the impact on the environment and to improve sustainability. All of this must be achieved in an environment where improved safety standards are an essential requirement. This project is not concerned with the integrity of the aircraft structure but proposes to concentrate on the design of aircraft seats, where the standards for occupant protection have been changed in the past decade to include dynamic seat testing and occupant injury assessments. This project will focus specifically on supporting aircraft seat development through the use of advanced computer simulation models that can represent not only the seat but also the occupant and the interaction between the occupant and the seat in crash conditions. The behaviour or representation of the aircraft structure is not a consideration in this project. The increased regulatory and industry requirements for improved safety are driving a corresponding increase in the amount of expensive and time consuming physical testing. These demands are further compromised by a lack of highly qualified product development and test engineers. While testing can be considered affordable in the short term this may not be true in future as systems and components are designed with increasing complexity. In order to address these issues engineers now rely on the application of computer models to the design of systems for occupant protection, an area in which it is now widely recognised that the automotive industry is leading aviation. As a result this project proposes to develop numerically based virtual simulations that could be used in lieu of the dynamic seat testing certification of parts CS 23.562 and 25.562. The FAA has also established a regulation to encourage analysis, AC20-146, and Europe should not miss the opportunity to utilise the new methods and take action to accelerate further the development of virtual modelling techniques within EASA.
The methodology and analytical techniques will be developed with collaboration from universities, research institutions, private industry and the EC (European Commission). The acceptable applications, limitations, validation processes, and minimum documentation requirements involved will be developed when substantiation by computer modelling is used to support a seat certification program. A user friendly tool, which can be used by the aviation engineers to solve seat testing and restraint system problems, will be developed. The project will provide industry with the incentive and tools to use computer modelling, allowing European companies to compete in a global market. The work will also provide a broader understanding and acceptance of computer models within EASA. The project outputs will lead ultimately to reduced development costs and improved aircraft occupant safety contributing also to the update of EASA policies.
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ANNA
Within the aerospace industry material qualification and qualification of processes is a very time and resource consuming topic. Therefore the reduction of time and cost for qualification procedures of materials and processes used for aerospace applications is an important objective.
An approach based on artificial neural networks (ANN) is proposed to be used for the data processing of experimental test data of any mechanical test. These ANNs are modelling techniques that are especially useful to address problems where correlations are not clearly formulated. Today there is a large amount of knowledge relating the constituents and process parameters of a vast amount of metals to almost all the damage tolerance parameters. All these data could be analyzed using an artificial neural network (ANN) based model. The training data could consist of material data determined with different alloys (mainly aluminium) and under various testing parameters. Finally, the prediction of material values through artificial neural network shall be checked concerning degree of accuracy and reliability. The practical benefits of the model will be extended to any other alloys or welded components.
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CLEO
A series of experiments with healthy human subjects at different age categories are proposed to characterize the effects of cabin light during differnent flight durations n a psychological, perippheral physiological and neuronal level. In virtual and real cabin environment effects on emotional well beeing, concentration, cognitive performance,heart rate, blood pressure, blood flow in main arteries and veins, skin conductance, Electroencephalogram and Near infrared spectroscopy of the brain will be measured. The interaction with age, gender, time of flight, color of light and accompanying activities (reading, working computers,time of day, time zones,eating) is characterized and optimal light conditions tested.
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OPTAS
Optimization is generally very important part of aircraft design process involving geometric dimensions of aircraft, aerodynamic optimization and independent part of structural optimization.
Project is focused on structural optimization of thin-walled aircraft structures with main function of weight and with respecting of technological and material constrains (and with high level of efficiency). The main goal of the project is to develop and verify optimization methods, derivation of goal function and function of constrain limitation. Furthermore, software application for optimization of selected structural components should ensure practical output.
Additional goal of the project is to create a database of structural elements with optimal dimensions and suitable parameters to fulfil stability, strength and fatigue requirements with consideration of technological and costs limitations. Application of optimization methods leads to optimal design especially in the design of stiffened panels, but it may also be used for other aircraft structural elements. Project will also address utilization of different materials including metals, composite and glare materials.
Experimental verification of chosen structural elements (assemblies) will be important part of the project.
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