Schedule as of Oct 11, 2022 - subject to change

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Thursday, October 20 • 1:40pm - 2:00pm
In-Situ Measurements of Normal Impedance and Sound Absorption Coefficient on Hard Materials by using Laser Doppler Vibrometer

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Standard techniques to measure the sound absorption coefficient or the acoustic impedance of materials are the Kundt’s tube and the reverberant room, albeit they are not practicable in-situ. In addition, these measurement methodologies involve extracting small or large samples of the material under test, which is not permitted for materials of historical importance. In this paper, the possibility of determining the normal acoustic impedance and the normal sound absorption coefficient based on direct in-situ measurements using a Laser Doppler Vibrometer (LDV) has been analyzed. Specifically, measurements have been conducted avoiding any contact on historical sandstones, bricks, and wood planks of the Greek-Roman Theater of Tyndaris located in Sicily (Italy).

avatar for Leonardo Saccenti

Leonardo Saccenti

PhD Student, University of Parma

Adriano Farina

University of Parma

Antonella Bevilacqua

University of Parma

Thursday October 20, 2022 1:40pm - 2:00pm EDT