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Titolo: Ultrasonics for the Diagnosis of a Trachite Stone Wall
Data di pubblicazione: 2015
Abstract: The aim of this chapter is to show the potentiality of a novel approach to ultrasonic investigation of masonry structures. In order to obtain useful, rapid and relatively low cost informations, the ultrasonic “Direct Transmission Technique” is applied on the structure under exam. This technique uses a beam of ultrasonic waves emitted by a transducer and received by another one placed on the opposite surface of the structure. The waves pass through the (ample under test) and are reflected and refracted by incidental discontinuities encountered along the path. The characteristics of the ultrasonic vibration are then investigated in order to obtain interesting information on the conditions of the materials. In particular, the attention has been focused on the correlation between the average density of the ray paths and the characteristics of acquired signals. This feature has been extracted from signals obtained by direct measurements on a real stone masonry with a known internal cavity. Then measurements have been related to the known geometry to verify the actual correlation with the characteristics of the traversed paths.
ISBN: 978-3-319-10565-9
Tipologia:2.1 Contributo in volume (Capitolo o Saggio)

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