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Read e-book online Biomimicry: Innovation Inspired by Nature PDF

By Janine M. Benyus

ISBN-10: 0061958921

ISBN-13: 9780061958922

This profound and available e-book information how technology is learning nature's most sensible principles to resolve our hardest 21st-century problems.

If chaos concept reworked our view of the universe, biomimicry is remodeling our lifestyles on the earth. Biomimicry is innovation encouraged by way of nature – making the most of evolution's 3.8 billion years of R&D because the first micro organism. Biomimics learn nature's most sensible principles: photosynthesis, mind strength, and shells – and adapt them for human use. they're revolutionising how we invent, compute, heal ourselves, harness strength, fix the surroundings, and feed the area.

Science author and lecturer Janine Benyus names and explains this phenomenon. She takes us into the lab and out within the box with state-of-the-art researchers as they stir vats of proteins to unharness their computing strength; examine how electrons zipping round a leaf mobile convert solar into gas in trillionths of a moment; detect miracle medicines by way of gazing what chimps consume whilst they're ailing; examine the hardy prairie as a version for low-maintenance agriculture; and extra.

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After that a thin release film is applied over the mould surface. Polyvinyl alcohol solution can be used to form the release film. A water solution of polyvinyl alcohol (PVA) forms a solid film over the surface on drying at room temperature. It may stick to the product, but it can be easily removed by putting the product in hot water for some time. Once the release film is formed, a gel-coat layer is generally applied first. The gel-coat is made with the same resin used for the fabrication of composite.

3 Directed Oxidation This process was invented by the Lanxide Corporation. A reinforcement preform is placed over molten metal. The molten metal infiltrates into the preform by capillary action. During the infiltration, the metal reacts with the surrounding gases and forms the respective ceramic matrix. For example, alumina based composites can be produced by the infiltration of aluminium metal and subsequent oxidation using oxygen. In this case, the CMCs are formed at the processing temperatures of MMC.

1 Compaction and Sintering The reinforcements in the form of short-fibres or particulates are thoroughly mixed with matrix powder. This mixture is compacted in a die using a press and then sintered at high temperature. As in MMC, the composite is densified by the diffusion process, which is affected by the presence of reinforcements. Hence, hot pressing or hot isostatic pressing (HIP) is necessary to achieve good density. Hot pressing is generally carried out using graphite dies with a typical pressure of 50 MPa.

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Biomimicry: Innovation Inspired by Nature by Janine M. Benyus


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