The use of composite materials in the aeronautic industry has been increasing since (in the 70s in the North American market and the 80s in Europe) they started to be used in commercial aviation as a substitute for classic materials such as metals. The reason for their use was largely because of their capacity to reinforce in preferential directions, their high rigidity, specific resistance and their enhanced fatigue and corrosion behaviour. Currently, the main reasons to justify their use in this sector are to do with reducing the structural weight of the aircraft, the reduction in the number of parts needed in its assembly (fewer zones for riveting) and, finally, the reduction of maintenance operations over the useful lifespan of the craft.
But there are certain limitations in their use such as the high costs of the raw material and of labour for the manufacture of large parts, the need for long periods of development, together with the complexity associated with its design, the difficulties in obtaining certifications for the necessary materials. On balance, between the advantages and disadvantages that these materials have, their current application in a commercial aircraft involves 20% of its weight. However, future tendencies point to an important increase in this percentage, enabling reductions in both weight and cost of aircraft, enhanced safety conditions and reduced environmental impact.
Considering that the average life of a plane is about 20 years and that parts made from composite materials are not repaired but replaced, the aeronautics sector is finding a huge quantity of waste material on its hands a solution for which has to be found. This is because the only currently available way to treat this type of materials is by dumping them in authorised dumps where they are still accepted. In fact, in the aeronautics market, future tendencies already point to the substitution of thermostable materials by other kinds of materials such as thermoplastics or GLARE®-type plastic/metal hybrid materials, although the reasons that justify this change are based more on economic (automation of the process, lowering labour costs, mass production, obtaining materials with enhanced mechanical properties, etc.) than on criteria of recyclability.
Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
International network connects experimental research in European waters
21.03.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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