Fibre couplings

David Jones

Nature, 1998, vol. 392, issue 6671, 26-26

Abstract: The nail is a brilliant and versatile fastener, but it could be improved — if, for instance, it was driven in by a force applied to its point, rather than its head, its shaft would be drawn in under tension and could not buckle. Daedalus finds the answer in a hammer which operates on the microsecond scale, so that, when the nail is hit on the head, the shock only travels a millimetre or so; the compressed region would be too small to buckle, but the pulse would travel down the nail and force the point into the material. Hence his current development work on the quartz-fibre piezoelectric nail.

Date: 1998
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DOI: 10.1038/32062

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