The Rail Engineer (April 2014): Acoustic sensing the future for rail monitoring?

The advent of fibre optics some 30 years ago revolutionised telecommunications transmission technology.  Since then, other applications of light source emission have emerged which could have a similar impact on aspects of everyday life.  Once such by-product is the measurement of acoustic energy, which sounds complex but, in real terms, is simply the recognition of noise and vibration near to a fibre optic cable.

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