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Over the past several thousand years, mankind has erected many engineering wonders - strong bridges and dams, wind turbines and the huge deep mines. And each of them while still in use, requires a mass of resources, money and time to carry out regular inspections. In fact, monitoring the integrity of the structures produced ... However, the cost is better not to be considered: the cost of repairs at those stages when the damage becomes visible, it is still higher - not to mention the security issues.
Perhaps, soon to put up with the cost of monitoring is not required: scientists working in the UK Mohamed Saafi (Mohamed Saafi) and David MakGehon (David McGahon) proposed to use for this purpose, a ... It will detect cracks before they become serious structural failure, and make it a hundred times cheaper.
Main trick used in the paint - it's an easy fly ash, which is created as a byproduct (and pollutants ) in the industrial burning of coal. The particles of ash mixed with nanotubes - the resulting substance can be applied using a simple spray atomizer. Then, in certain areas of the electrodes are introduced into the coating, organized into groups, each of which has its own unit for energy measurement and wireless transmission of electrical current data at the receiving station. As soon as the slightest because the integrity is found the characteristic jump in the voltage - the node will inform the.
As a basis for monitoring ... The fact that even the most careful attention the inspector examines the key elements of a design and can not physically cover the entire surface. The paint is able to control everything and continuously.
According to the creators, this coating has also a ... That ash is responsible for these fastening properties, whereas the nanotubes provide the holding current.
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