Articles | Volume 17, issue 7
Nat. Hazards Earth Syst. Sci., 17, 1025–1032, 2017
https://doi.org/10.5194/nhess-17-1025-2017
Nat. Hazards Earth Syst. Sci., 17, 1025–1032, 2017
https://doi.org/10.5194/nhess-17-1025-2017

Research article 04 Jul 2017

Research article | 04 Jul 2017

Signal frequency distribution and natural-time analyses from acoustic emission monitoring of an arched structure in the Castle of Racconigi

Gianni Niccolini et al.

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Short summary
An architectural element of the Royal Castle of Racconigi (northwestern Italy, 17th century) is subjected to nondestructive testing for structural integrity evaluation. It is found that the so-called acoustic emissions – high-frequency vibrations emitted as tiny cracks that develop inside stone and concrete – correlate with those of small nearby earthquakes, suggesting new approaches to monitoring gradual damage accumulation inflicted by such earthquakes on architectural heritage and monuments.
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