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Appl. Sci. 2015, 5(4), 1683-1698;

Correlation between Earthquakes and AE Monitoring of Historical Buildings in Seismic Areas

Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
This paper is an extended version of paper published in the 6th International Conference on Emerging Technologies in Non-destructive Testing (ETNDT6), Brussels, Belgium, 27–29 May 2015.
Author to whom correspondence should be addressed.
Academic Editors: Dimitrios G. Aggelis and Nathalie Godin
Received: 5 November 2015 / Revised: 19 November 2015 / Accepted: 26 November 2015 / Published: 8 December 2015
(This article belongs to the Special Issue Acoustic and Elastic Waves: Recent Trends in Science and Engineering)
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In this contribution a new method for evaluating seismic risk in regional areas based on the acoustic emission (AE) technique is proposed. Most earthquakes have precursors, i.e., phenomena of changes in the Earth’s physical-chemical properties that take place prior to an earthquake. Acoustic emissions in materials and earthquakes in the Earth’s crust, despite the fact that they take place on very different scales, are very similar phenomena; both are caused by a release of elastic energy from a source located in a medium. For the AE monitoring, two important constructions of Italian cultural heritage are considered: the chapel of the “Sacred Mountain of Varallo” and the “Asinelli Tower” of Bologna. They were monitored during earthquake sequences in their relative areas. By using the Grassberger-Procaccia algorithm, a statistical method of analysis was developed that detects AEs as earthquake precursors or aftershocks. Under certain conditions it was observed that AEs precede earthquakes. These considerations reinforce the idea that the AE monitoring can be considered an effective tool for earthquake risk evaluation. View Full-Text
Keywords: acoustic emission; structural monitoring; cultural heritage; earthquakes; seismic precursors acoustic emission; structural monitoring; cultural heritage; earthquakes; seismic precursors

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Lacidogna, G.; Cutugno, P.; Niccolini, G.; Invernizzi, S.; Carpinteri, A. Correlation between Earthquakes and AE Monitoring of Historical Buildings in Seismic Areas. Appl. Sci. 2015, 5, 1683-1698.

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