Last summer, researchers at the British naval dockyard in Devon port indulged in a little scientific vandalism. They took a 7-metre carbon-fibre beam and piled weights onto it until it broke. If the final outcome of this research proves successful, beams like this will be used to strengthen the roofs on London's underground train network. 

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DOI: 10.1016/S1369-7021(99)80038-8