Title: An experimental application of a 3D terrestrial laser scanner and acoustic techniques in assessing the quality of the stones used in monumental structures

Authors: Giuseppe Casula, Silvana Fais, Paola Ligas

Addresses: Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione di Bologna, Via Donato Creti 12 – 40128, Bologna, Italy. ' Dipartimento di Geoingegneria e Tecnologie Ambientali, University of Cagliari, Piazza D'Armi 19 – 09123, Cagliari, Italy; Consorzio Interuniversitario Nazionale per l'Ingegneria, delle Georisorse (CI.NI.Geo), Via di Monte Giordano 13, 00184 Roma, Italy. ' Dipartimento di Geoingegneria e Tecnologie Ambientali, University of Cagliari, Piazza D'Armi 19 – 09123, Cagliari, Italy

Abstract: This paper briefly describes the preliminary results of an experiment that aimed to test a new nondestructive methodology based on the integrated application of Three-Dimensional (3D) terrestrial laser scanning and acoustic techniques in the ultrasonic range (54 kHz) in evaluating the quality of stone materials. Our target is to evaluate the state of conservation of stone materials by correlating ultrasonic longitudinal pulse velocity and frequency spectra with the reflectivity or reflectance of the reflected 3D Laser Scanner (LS) beam pulse transmitted to a part of an investigated surface.

Keywords: acoustic techniques; 3D terrestrial laser scanning; stones quality; materials properties; monumental structures; nondestructive evaluation; NDE; ultrasonics; stone materials; conservation.

DOI: 10.1504/IJMMP.2009.028432

International Journal of Microstructure and Materials Properties, 2009 Vol.4 No.1, pp.45 - 56

Published online: 17 Sep 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article